forked from extern/shorewall_code
Update my config to remove ipsec
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@2878 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
This commit is contained in:
teastep
parent
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commit
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@ -15,7 +15,7 @@
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</author>
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</authorgroup>
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<pubdate>2005-10-04</pubdate>
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<pubdate>2005-10-13</pubdate>
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<copyright>
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<year>2001-2005</year>
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@ -48,7 +48,7 @@
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<caution>
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<para>The configuration shown here corresponds to Shorewall version
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2.5.5. My configuration uses features not available in earlier Shorewall
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3.0.0. My configuration uses features not available in earlier Shorewall
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releases.</para>
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</caution>
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@ -78,11 +78,12 @@
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</listitem>
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<listitem>
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<para>I use SNAT through 206.124.146.176 for my Wife's Windows XP
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system <quote>Tarry</quote>, and our SuSE 10.0 laptop
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<quote>Tipper</quote> which connects through the Wireless Access Point
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(wap) via a Wireless Bridge (wet), and my work laptop (eastepnc6000)
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when it is not docked in my office.<note>
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<para>I use SNAT through 206.124.146.179 for my Wife's Windows XP
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system <quote>Tarry</quote>, my <firstterm>crash and burn</firstterm>
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system "Wookie", and our SuSE 10.0 laptop <quote>Tipper</quote> which
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connects through the Wireless Access Point (wap) via a Wireless Bridge
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(wet), and my work laptop (eastepnc6000) when it is not docked in my
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office.<note>
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<para>While the distance between the WAP and where I usually use
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the laptop isn't very far (50 feet or so), using a WAC11 (CardBus
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wireless card) has proved very unsatisfactory (lots of lost
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@ -112,22 +113,18 @@
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WAP11. In additional to using the rather weak WEP 40-bit encryption
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(64-bit with the 24-bit preamble), I use <ulink
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url="MAC_Validation.html">MAC verification</ulink> and <ulink
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url="IPSEC-2.6.html">Kernel 2.6 IPSEC</ulink> or <ulink
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url="OPENVPN.html">OpenVPN</ulink>.</para>
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<para>The single system in the DMZ (address 206.124.146.177) runs postfix,
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Courier IMAP (imaps and pop3), DNS, a Web server (Apache) and an FTP
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server (Pure-ftpd) under Fedora Core 3. The system also runs fetchmail to
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fetch our email from our old and current ISPs. That server is managed
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through Proxy ARP.</para>
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server (Pure-ftpd) under Fedora Core 4. The system also runs fetchmail to
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fetch our email from our old and current ISPs. That server is accessible
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from the Internet through <ulink url="ProxyARP.htm">Proxy
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ARP</ulink>.</para>
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<para>The firewall system itself runs a DHCP server that serves the local
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and wireless networks.</para>
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<para>I have one system (Remote, 206.124.146.179) outside the firewall.
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This system, which runs Debian Sarge (testing) is used for roadwarrior VPN
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testing and for checking my firewall "from the outside".</para>
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<para>All administration and publishing is done using ssh/scp. I have a
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desktop environment installed on the firewall but I usually don't start
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it. X applications tunnel through SSH to Ursa or one of the laptops. The
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@ -149,11 +146,9 @@
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<para>The firewall is configured with OpenVPN for VPN access from our
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second home in <ulink url="http://www.omakchamber.com/">Omak,
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Washington</ulink> or when we are otherwise out of town. Secure remote
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access via IPSEC is also available. We typically use IPSEC for wireless
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security around the house and OpenVPN for roadwarrior access but the
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Firewall is set up to access either tunnel type from either
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location.</para>
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Washington</ulink> or when we are otherwise out of town. We run a second
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instance of OpenVPN that is used to <ulink url="OPENVPN.html">bridge the
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wireless laptops in the Wifi zone to the local lan</ulink>.</para>
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<para><graphic align="center" fileref="images/network.png" /></para>
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</section>
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@ -177,25 +172,23 @@ MACLIST_LOG_LEVEL=$LOG
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TCP_FLAGS_LOG_LEVEL=$LOG
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RFC1918_LOG_LEVEL=$LOG
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SMURF_LOG_LEVEL=$LOG
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BOGON_LOG_LEVEL=$LOG
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LOG_MARTIANS=No
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IPTABLES=
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PATH=/usr/local/sbin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin
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PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin:/usr/local/sbin
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SHOREWALL_SHELL=/bin/dash
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SUBSYSLOCK=
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STATEDIR=/var/lib/shorewall
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MODULESDIR=
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CONFIG_PATH=/etc/shorewall:/usr/share/shorewall
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RESTOREFILE=standard
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IPSECFILE=zones
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FW=fw
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FW=
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IP_FORWARDING=On
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ADD_IP_ALIASES=Yes
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ADD_SNAT_ALIASES=Yes
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RETAIN_ALIASES=Yes
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TC_ENABLED=Yes
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TC_ENABLED=Internal
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CLEAR_TC=Yes
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MARK_IN_FORWARD_CHAIN=No
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MARK_IN_FORWARD_CHAIN=Yes
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CLAMPMSS=Yes
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ROUTE_FILTER=No
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DETECT_DNAT_IPADDRS=Yes
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@ -205,7 +198,8 @@ BLACKLISTNEWONLY=Yes
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DELAYBLACKLISTLOAD=No
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MODULE_SUFFIX=
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DISABLE_IPV6=Yes
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BRIDGING=No
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BRIDGING=Yes
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DYNAMIC_ZONES=No
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PKTTYPE=No
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RFC1918_STRICT=Yes
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MACLIST_TTL=60
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@ -213,7 +207,8 @@ SAVE_IPSETS=Yes
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MAPOLDACTIONS=No
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FASTACCEPT=No
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BLACKLIST_DISPOSITION=DROP
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MACLIST_DISPOSITION=REJECT
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MACLIST_TABLE=mangle
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MACLIST_DISPOSITION=DROP
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TCP_FLAGS_DISPOSITION=DROP</programlisting>
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</blockquote>
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</section>
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@ -227,7 +222,7 @@ POPSERVERS=<list of external POP3 servers accessed by fetchmail running on th
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LOG=info
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WIFI_IF=eth0
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EXT_IF=eth2
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INT_IF=eth3
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INT_IF=br0
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DMZ_IF=eth1
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OMAK=<ip address of the gateway at our second home></programlisting></para>
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</blockquote>
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@ -244,9 +239,7 @@ dmz ipv4
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loc ipv4
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vpn ipv4
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Wifi ipv4
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sec ipsec mode=tunnel mss=1400
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#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE
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</programlisting>
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#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE</programlisting>
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</blockquote>
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</section>
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@ -264,17 +257,6 @@ Wifi $WIFI_IF - dhcp,maclist
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</blockquote>
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</section>
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<section>
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<title>Hosts File</title>
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<blockquote>
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<programlisting>#ZONE HOST(S) OPTIONS
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sec $WIFI_IF:192.168.3.0/24
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sec $EXT_IF:0.0.0.0/0
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#LAST LINE -- ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE</programlisting>
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</blockquote>
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</section>
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<section>
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<title>Routestopped File</title>
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@ -345,14 +327,6 @@ loc net ACCEPT
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$FW vpn ACCEPT
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vpn net ACCEPT
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vpn loc ACCEPT
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sec vpn ACCEPT
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vpn sec ACCEPT
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sec loc ACCEPT
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loc sec ACCEPT
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fw sec ACCEPT
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sec net ACCEPT
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Wifi sec NONE
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sec Wifi NONE
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fw Wifi ACCEPT
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loc vpn ACCEPT
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$FW loc ACCEPT #Firewall to Local
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@ -377,17 +351,9 @@ all all REJECT $LOG
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file below. The double colons ("::") cause the entry to be exempt from
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ADD_SNAT_ALIASES=Yes in my shorewall.conf file above.</para>
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<note>
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<para>My use of ADD_SNAT_ALIASES=Yes is an anachronism. I previously
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used 206.124.146.179 as the SNAT address before I configured a
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system outside the firewall with that IP address.
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ADD_SNAT_ALIASES=Yes was used to add 206.124.146.179 as an IP
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address on the external interface.</para>
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</note>
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<programlisting>#INTERFACE SUBNET ADDRESS PROTO PORT
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+$EXT_IF::192.168.1.1 0.0.0.0/0 192.168.1.254
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$EXT_IF:: 192.168.0.0/22 206.124.146.176
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$EXT_IF:2 192.168.0.0/22 206.124.146.179
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$DMZ_IF:: 206.124.146.176 192.168.1.254 tcp 80
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#LAST LINE -- ADD YOUR ENTRIES ABOVE THIS LINE -- DO NOT REMOVE</programlisting>
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</blockquote>
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@ -424,10 +390,8 @@ $DMZ_IF:: 206.124.146.176 192.168.1.254 tcp 80
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<blockquote>
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<programlisting>#TYPE ZONE GATEWAY GATEWAY ZONE PORT
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openvpn:1194 net 0.0.0.0/0
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ipsec net 0.0.0.0/0 sec
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openvpn:1194 Wifi 192.168.3.0/24
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ipsec Wifi 192.168.3.0/24 sec
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openvpnserver:1194 net 0.0.0.0/0
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openvpnserver:1194 Wifi 192.168.3.0/24
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#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE</programlisting>
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</blockquote>
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</section>
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@ -477,8 +441,7 @@ REJECT:$LOG loc net udp
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#
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REJECT loc net tcp 137,445
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REJECT loc net udp 137:139
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REJECT sec net tcp 137,445
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REJECT sec net udp 137:139
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#
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# Stop my idiotic work laptop from sending to the net with an HP source/dest IP address
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#
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@ -494,13 +457,6 @@ ACCEPT loc fw udp
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DROP loc fw tcp 3185 #SuSE Meta pppd
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Ping/ACCEPT loc fw
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###############################################################################################################################################################################
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# Secure wireless to Firewall
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#
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ACCEPT sec fw tcp ssh,time,631,8080
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ACCEPT sec fw udp 161,ntp,631
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DROP sec fw tcp 3185 #SuSE Meta pppd
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Ping/ACCEPT sec fw
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###############################################################################################################################################################################
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# Roadwarriors to Firewall
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#
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ACCEPT vpn fw tcp ssh,time,631,8080
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@ -528,15 +484,6 @@ ACCEPT Wifi net udp
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ACCEPT Wifi net udp 4500
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Ping/ACCEPT Wifi net
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###############################################################################################################################################################################
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# Secure Wireless to DMZ
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#
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DROP sec:!192.168.0.0/22 dmz
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DNAT sec dmz:206.124.146.177:3128 \
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tcp www - !206.124.146.177,192.168.1.1
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ACCEPT sec dmz udp domain,xdmcp
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ACCEPT sec dmz tcp www,smtp,smtps,domain,ssh,imap,https,imaps,ftp,10023,pop3 -
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Ping/ACCEPT sec dmz
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###############################################################################################################################################################################
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# Road Warriors to DMZ
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#
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ACCEPT vpn dmz udp domain
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@ -716,9 +663,7 @@ $EXT_IF 30 6*full/10 6*full/10 3
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auto lo
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iface lo inet loopback
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# DMZ interface -- After the interface is up, add a route to the server. This allows the 'Yes' setting
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# in the HAVEROUTE column of /etc/shorewall/proxyarp above.
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# DMZ interface
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auto eth1
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iface eth1 inet static
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address 206.124.146.176
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@ -726,8 +671,7 @@ iface eth1 inet static
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broadcast 0.0.0.0
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up ip route add 206.124.146.177 dev eth1
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# Internet interface -- After the interface is up, add a route to the Westell 2200 DSL "Modem"
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# Internet interface
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auto eth2
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iface eth2 inet static
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address 206.124.146.176
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@ -735,7 +679,7 @@ iface eth2 inet static
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gateway 206.124.146.254
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up ip route add 192.168.1.1 dev eth2
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# Wireless interface
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# Wireless network
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auto eth0
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iface eth0 inet static
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@ -743,282 +687,94 @@ iface eth0 inet static
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netmask 255.255.255.0
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# LAN interface
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auto br0
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iface br0 inet static
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address 192.168.1.254
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netmask 255.255.255.0
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pre-up /usr/sbin/openvpn --mktun --dev tap0
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pre-up /sbin/ip link set tap0 up
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pre-up /sbin/ip link set eth3 up
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pre-up /usr/sbin/brctl addbr br0
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pre-up /usr/sbin/brctl addif br0 eth3
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pre-up /usr/sbin/brctl addif br0 tap0
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up ip route add 224.0.0.0/4 dev br0
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post-down /usr/sbin/brctl delif br0 eth3
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post-down /usr/sbin/brctl delif br0 tap0
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post-down /usr/sbin/brctl delbr br0
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post-down /usr/sbin/openvpn --rmtun --dev tap0
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# Unbrided LAN interface
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auto eth3
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iface eth3 inet static
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address 192.168.1.254
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netmask 255.255.255.0</programlisting>
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netmask 255.255.255.0
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up ip route add 224.0.0.0/4 dev eth3
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# Second Internet interface
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iface eth4 inet static
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pre-up modprobe ne io=0x300 irq=10
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address 206.124.146.179
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netmask 255.255.255.0
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</programlisting>
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</blockquote>
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</section>
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<section>
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<title>/etc/racoon/racoon.conf</title>
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<title>/etc/openvpn/server.conf</title>
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<para>Only the tunnel-mode OpenVPN configuration is described here --
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the bridge is described in the <ulink url="OPENVPN.html">OpenVPN
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documentation</ulink>.</para>
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<blockquote>
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<programlisting>listen
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{
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isakmp 206.124.146.176 ;
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isakmp 192.168.3.254 ;
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isakmp_natt 206.124.146.176 [4500] ;
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adminsock "/usr/local/var/racoon/racoon.sock" "root" "operator" 0660 ;
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}
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#
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# Tipper at Home
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#
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remote 192.168.3.8
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{
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exchange_mode main ;
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dpd_delay 20 ;
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certificate_type x509 "gateway.pem" "gateway_key.pem" ;
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verify_cert on ;
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my_identifier asn1dn ;
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peers_identifier asn1dn ;
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verify_identifier on ;
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lifetime time 30 minutes ;
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proposal {
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encryption_algorithm blowfish ;
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hash_algorithm sha1 ;
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authentication_method rsasig ;
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dh_group 2 ;
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}
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}
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<programlisting>dev tun
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sainfo address 0.0.0.0/0 any address 192.168.3.8 any
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{
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pfs_group 2 ;
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lifetime time 30 minutes ;
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encryption_algorithm blowfish ;
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authentication_algorithm hmac_sha1, hmac_md5 ;
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compression_algorithm deflate ;
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}
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#
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# Work Laptop at Home -- it doesn't like getting proposals from us
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# so we let it initiate the tunnel.
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#
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# Windows XP doesn't support blowfish or rijndal
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# so we're stuck with 3des :-(
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#
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remote 192.168.3.6 inherit 192.168.3.8
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{
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proposal_check obey ;
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passive on ;
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generate_policy on ;
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proposal {
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encryption_algorithm 3des ;
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hash_algorithm sha1 ;
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authentication_method rsasig ;
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dh_group 2 ;
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}
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}
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local 206.124.146.176
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sainfo address 0.0.0.0/0 any address 192.168.3.6 any
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{
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pfs_group 2 ;
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lifetime time 1 hour ;
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encryption_algorithm 3des ;
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authentication_algorithm hmac_sha1, hmac_md5 ;
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compression_algorithm deflate ;
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}
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#
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# Both systems on the road -- We use 3des for phase I to accomodate XP.
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# Since we don't know the IP address of the
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# remote host ahead of time, we must use
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# "anonymous".
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#
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remote anonymous inherit 192.168.3.6
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{
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nat_traversal on ;
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ike_frag on;
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}
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server 192.168.2.0 255.255.255.0
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sainfo anonymous
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{
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pfs_group 2;
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lifetime time 12 hour ;
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encryption_algorithm blowfish, 3des;
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authentication_algorithm hmac_sha1, hmac_md5 ;
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compression_algorithm deflate ;
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}</programlisting>
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</blockquote>
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</section>
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dh dh1024.pem
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<section>
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<title>/etc/racoon/setkey.conf</title>
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ca /etc/certs/cacert.pem
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<blockquote>
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<programlisting># First of all flush the SAD and SPD databases
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crl-verify /etc/certs/crl.pem
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flush;
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spdflush;
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cert /etc/certs/gateway.pem
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key /etc/certs/gateway_key.pem
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# We only define policies for 'tipper'. The XP box seems to work better when it initiates the
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# negotiation so we essentially run it like a roadwarrior even around the house.
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port 1194
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spdadd 0.0.0.0/0 192.168.3.8/32 any -P out ipsec esp/tunnel/192.168.3.254-192.168.3.8/require;
|
||||
spdadd 192.168.3.8/32 0.0.0.0/0 any -P in ipsec esp/tunnel/192.168.3.8-192.168.3.254/require;</programlisting>
|
||||
comp-lzo
|
||||
|
||||
user nobody
|
||||
group nogroup
|
||||
|
||||
keepalive 15 45
|
||||
ping-timer-rem
|
||||
persist-tun
|
||||
persist-key
|
||||
|
||||
client-config-dir /etc/openvpn/clients
|
||||
ccd-exclusive
|
||||
client-to-client
|
||||
|
||||
verb 3
|
||||
</programlisting>
|
||||
</blockquote>
|
||||
</section>
|
||||
</section>
|
||||
|
||||
<section>
|
||||
<title>Tipper Configuration while at Home</title>
|
||||
<title>Tipper Configuration while on the Road</title>
|
||||
|
||||
<para>This laptop is either configured on our wireless network
|
||||
(192.168.3.8) or as a standalone system on the road. While this system is
|
||||
connected via our wireless network, it uses IPSEC tunnel mode for all
|
||||
access.</para>
|
||||
|
||||
<note>
|
||||
<para>Given that I use OpenVPN for remote access, it would be more
|
||||
convenient to also use it for wireless access at home. I use IPSEC just
|
||||
so that I always have a working IPSEC testbed.</para>
|
||||
</note>
|
||||
(192.168.3.8) or as a standalone system on the road.</para>
|
||||
|
||||
<para>Tipper's view of the world is shown in the following diagram:</para>
|
||||
|
||||
<graphic align="center" fileref="images/network2.png" valign="middle" />
|
||||
|
||||
<para>The key configuration files are shown in the following
|
||||
sections.</para>
|
||||
|
||||
<section>
|
||||
<title>zones</title>
|
||||
|
||||
<blockquote>
|
||||
<programlisting>#ZONE DISPLAY COMMENTS
|
||||
home Home Shorewall Network
|
||||
net Net Internet
|
||||
#LAST LINE -- ADD YOUR ENTRIES ABOVE THIS LINE -- DO NOT REMOVE
|
||||
</programlisting>
|
||||
</blockquote>
|
||||
</section>
|
||||
|
||||
<section>
|
||||
<title>policy</title>
|
||||
|
||||
<blockquote>
|
||||
<programlisting>#SOURCE DEST POLICY LOG LEVEL LIMIT:BURST
|
||||
$FW net ACCEPT
|
||||
$FW home ACCEPT
|
||||
home $FW ACCEPT
|
||||
net home NONE
|
||||
home net NONE
|
||||
net all DROP info
|
||||
# The FOLLOWING POLICY MUST BE LAST
|
||||
all all REJECT info
|
||||
#LAST LINE -- ADD YOUR ENTRIES ABOVE THIS LINE -- DO NOT REMOVE</programlisting>
|
||||
</blockquote>
|
||||
</section>
|
||||
|
||||
<section>
|
||||
<title>interfaces</title>
|
||||
|
||||
<blockquote>
|
||||
<programlisting>#ZONE INTERFACE BROADCAST OPTIONS
|
||||
net eth0 detect dhcp,tcpflags
|
||||
#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE</programlisting>
|
||||
</blockquote>
|
||||
</section>
|
||||
|
||||
<section>
|
||||
<title>ipsec</title>
|
||||
|
||||
<blockquote>
|
||||
<programlisting>#ZONE IPSEC OPTIONS IN OUT
|
||||
# ONLY OPTIONS OPTIONS
|
||||
home yes mode=tunnel
|
||||
#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE</programlisting>
|
||||
</blockquote>
|
||||
</section>
|
||||
|
||||
<section>
|
||||
<title>hosts</title>
|
||||
|
||||
<blockquote>
|
||||
<programlisting>#ZONE HOST(S) OPTIONS
|
||||
home eth0:0.0.0.0/0
|
||||
#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS LINE -- DO NOT REMOVE</programlisting>
|
||||
</blockquote>
|
||||
</section>
|
||||
|
||||
<section>
|
||||
<title>rules</title>
|
||||
|
||||
<blockquote>
|
||||
<programlisting>#ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL RATE USER/
|
||||
# PORT PORT(S) DEST LIMIT GROUP
|
||||
ACCEPT net $FW icmp 8
|
||||
ACCEPT net $FW tcp 22
|
||||
ACCEPT net $FW tcp 4000:4100
|
||||
#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE</programlisting>
|
||||
</blockquote>
|
||||
</section>
|
||||
|
||||
<section>
|
||||
<title>/etc/racoon/setkey.conf</title>
|
||||
|
||||
<blockquote>
|
||||
<programlisting>flush;
|
||||
spdflush;
|
||||
|
||||
# Policies for while we're connected via Wireless at home
|
||||
|
||||
spdadd 192.168.3.8/32 192.168.3.8/32 any -P in none;
|
||||
spdadd 192.168.3.8/32 192.168.3.8/32 any -P out none;
|
||||
spdadd 127.0.0.0/8 127.0.0.0/8 any -P in none;
|
||||
spdadd 127.0.0.0/8 127.0.0.0/8 any -P out none;
|
||||
spdadd 0.0.0.0/0 192.168.3.8/32 any -P in ipsec esp/tunnel/192.168.3.254-192.168.3.8/require;
|
||||
spdadd 192.168.3.8/32 0.0.0.0/0 any -P out ipsec esp/tunnel/192.168.3.8-192.168.3.254/require;
|
||||
</programlisting>
|
||||
</blockquote>
|
||||
</section>
|
||||
|
||||
<section>
|
||||
<title>/etc/racoon/racoon.conf</title>
|
||||
|
||||
<blockquote>
|
||||
<programlisting>path certificate "/etc/certs";
|
||||
|
||||
listen
|
||||
{
|
||||
isakmp 192.168.3.8;
|
||||
}
|
||||
|
||||
remote 192.168.3.254
|
||||
{
|
||||
exchange_mode main ;
|
||||
certificate_type x509 "tipper.pem" "tipper_key.pem";
|
||||
verify_cert on;
|
||||
my_identifier asn1dn ;
|
||||
peers_identifier asn1dn ;
|
||||
verify_identifier on ;
|
||||
lifetime time 30 minutes ;
|
||||
proposal {
|
||||
encryption_algorithm blowfish ;
|
||||
hash_algorithm sha1;
|
||||
authentication_method rsasig ;
|
||||
dh_group 2 ;
|
||||
}
|
||||
}
|
||||
|
||||
sainfo address 192.168.3.8/32 any address 0.0.0.0/0 any
|
||||
{
|
||||
pfs_group 2;
|
||||
lifetime time 30 minutes ;
|
||||
encryption_algorithm blowfish ;
|
||||
authentication_algorithm hmac_sha1, hmac_md5 ;
|
||||
compression_algorithm deflate ;
|
||||
}</programlisting>
|
||||
</blockquote>
|
||||
</section>
|
||||
</section>
|
||||
|
||||
<section>
|
||||
<title>Tipper Configuration on the Road</title>
|
||||
|
||||
<para>When Tipper is on the road, it's world view is the same as in the
|
||||
diagram above.</para>
|
||||
|
||||
<section>
|
||||
<title>zones</title>
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user