Tom Eastep 2009 2015 Thomas M. Eastep Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover, and with no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. The ruleset shown in this article uses Shorewall features that are not available in Shorewall versions prior to 4.6.11

The configuration described in this article represents the network at shorewall.org during the summer of 2015. It uses the following Shorewall features: Two Internet Interfaces A DMZ with three "systems" using Proxy ARP and running in Linux Containers (LXC) IPv6 Access through two 6to4 Tunnels Ipsets Transparent proxy using Squid Linux runs the firewall and the servers (although they run in LXC containers on the firewall system). Linux is not used natively on any of our other systems.. I rather run Windows natively (Windows 7 Professional) and run Linux in VMs under VirtualBox. This approach has a number of advantages: Efficient disk utilization. The virtual disks used by Linux are just files in the NTFS file system. There is no need to pre-allocate one or more partitions for use by Linux. Some large applications, like Google Earth, are installed only on Windows. Avoids proprietary hardware issues. The Linux VMs emulate standard hardware that is well-supported by Linux. Avoids DRM hassles All DRM-protected media can be handled under Windows. VirtualBox is fast (when your processor supports virtualization extensions) and very easy to use. I highly recommend it!

Our network is diagrammed in the following graphic. We have two accounts with Comcast: ComcastC This is a high-speed (40mb/8mb) link with a single dynamic IPv4 address. We are not allowed to run servers accessible through this account. ComcastB Comcast Business Class Service with a /29 (70.90.191.120/29). The wired local network is restricted to my home office. The wireless network is managed by a wireless router which we use only as an access point -- its WAN interface is unused and it is configured to not do NAT. The wireless network uses WPA2 personal security.

This section contains excerpts from the Shorewall configuration.

MIRRORS=62.216.169.37,\ 62.216.184.105,\ 63.229.2.114,\ ... Defines the IP addresses of the Shorewall mirror sites.

INCLUDE mirrors LOG="NFLOG(0,0,1)" INT_IF=eth0 TUN_IF=tun+ COMB_IF=eth2 COMC_IF=eth1 MYNET=70.90.191.120/29 #External IP addresses handled by this router DMZ_NET=70.90.191.124/31 FW_NET=70.90.191.120/30 INT_NET=172.20.1.0/24 DYN_NET=$(find_first_interface_address_if_any $COMC_IF) SMC_ADDR=10.1.10.11 [ -n "${DYN_NET:=67.170.122.219}" ] DYN_NET=${DYN_NET}/32 DMZ=fw:$DMZ_NET LISTS=:70.90.191.124 SERVER=:70.90.191.125 MAIL=172.20.1.200 PROXY=Yes STATISTICAL=Yes SQUID2=Yes [ -n "${EXPERIMENTAL:=0}" ] As shown, this file defines variables to hold the various lists of IP addresses that I need to maintain. To simplify network reconfiguration, I also use variables to define the log level and the network interfaces.

############################################################################### # S T A R T U P E N A B L E D ############################################################################### STARTUP_ENABLED=Yes ############################################################################### # V E R B O S I T Y ############################################################################### VERBOSITY=1 ############################################################################### # L O G G I N G ############################################################################### BLACKLIST_LOG_LEVEL=none INVALID_LOG_LEVEL= LOG_BACKEND=ULOG LOG_MARTIANS=Yes LOG_VERBOSITY=1 LOGALLNEW= LOGFILE=/var/log/ulogd/ulogd.syslogemu.log LOGFORMAT=": %s %s" LOGTAGONLY=Yes LOGLIMIT="s:5/min" MACLIST_LOG_LEVEL="$LOG" RELATED_LOG_LEVEL="$LOG" RPFILTER_LOG_LEVEL=info SFILTER_LOG_LEVEL="$LOG" SMURF_LOG_LEVEL="$LOG" STARTUP_LOG=/var/log/shorewall-init.log TCP_FLAGS_LOG_LEVEL="$LOG" UNTRACKED_LOG_LEVEL= ############################################################################### # L O C A T I O N O F F I L E S A N D D I R E C T O R I E S ############################################################################### ARPTABLES= CONFIG_PATH="/etc/shorewall:/etc/shorewall-common:/usr/share/shorewall:/usr/share/shorewall/Shorewall" GEOIPDIR=/usr/share/xt_geoip/LE IPTABLES=/sbin/iptables IP=/sbin/ip IPSET= LOCKFILE=/var/lib/shorewall/lock MODULESDIR= NFACCT= PATH="/usr/local/sbin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin" PERL=/usr/bin/perl RESTOREFILE= SHOREWALL_SHELL=/bin/bash SUBSYSLOCK= TC= ############################################################################### # D E F A U L T A C T I O N S / M A C R O S ############################################################################### ACCEPT_DEFAULT=none DROP_DEFAULT=Drop NFQUEUE_DEFAULT=none QUEUE_DEFAULT=none REJECT_DEFAULT=Reject ############################################################################### # R S H / R C P C O M M A N D S ############################################################################### RCP_COMMAND='scp ${files} ${root}@${system}:${destination}' RSH_COMMAND='ssh ${root}@${system} ${command}' ############################################################################### # F I R E W A L L O P T I O N S ############################################################################### ACCOUNTING=Yes ACCOUNTING_TABLE=mangle ADD_IP_ALIASES=No ADD_SNAT_ALIASES=No ADMINISABSENTMINDED=Yes BASIC_FILTERS=No IGNOREUNKNOWNVARIABLES=No AUTOCOMMENT=Yes AUTOHELPERS=Yes AUTOMAKE=Yes BLACKLIST="NEW,INVALID,UNTRACKED" CHAIN_SCRIPTS=No CLAMPMSS=Yes CLEAR_TC=Yes COMPLETE=No DEFER_DNS_RESOLUTION=No DELETE_THEN_ADD=No DETECT_DNAT_IPADDRS=No DISABLE_IPV6=No DONT_LOAD="nf_nat_sip,nf_conntrack_sip,nf_conntrack_h323,nf_nat_h323" DYNAMIC_BLACKLIST=Yes EXPAND_POLICIES=Yes EXPORTMODULES=Yes FASTACCEPT=Yes FORWARD_CLEAR_MARK=Yes HELPERS="ftp,irc" IMPLICIT_CONTINUE=No INLINE_MATCHES=Yes IPSET_WARNINGS=No IP_FORWARDING=Yes KEEP_RT_TABLES=Yes LEGACY_FASTSTART=Yes LOAD_HELPERS_ONLY=Yes MACLIST_TABLE=mangle MACLIST_TTL=60 MANGLE_ENABLED=Yes MAPOLDACTIONS=No MARK_IN_FORWARD_CHAIN=No MODULE_SUFFIX="ko ko.xz" MULTICAST=No MUTEX_TIMEOUT=60 NULL_ROUTE_RFC1918=unreachable OPTIMIZE=All OPTIMIZE_ACCOUNTING=No REJECT_ACTION=RejectAct REQUIRE_INTERFACE=No RESTORE_DEFAULT_ROUTE=No RESTORE_ROUTEMARKS=Yes RETAIN_ALIASES=No ROUTE_FILTER=No SAVE_ARPTABLES=Yes SAVE_IPSETS=ipv4 TC_ENABLED=No TC_EXPERT=No TC_PRIOMAP="2 3 3 3 2 3 1 1 2 2 2 2 2 2 2 2" TRACK_PROVIDERS=Yes TRACK_RULES=No USE_DEFAULT_RT=Yes USE_PHYSICAL_NAMES=Yes USE_RT_NAMES=Yes WARNOLDCAPVERSION=Yes WORKAROUNDS=No ZONE2ZONE=- ############################################################################### # P A C K E T D I S P O S I T I O N ############################################################################### BLACKLIST_DISPOSITION=DROP INVALID_DISPOSITION=CONTINUE MACLIST_DISPOSITION=ACCEPT RELATED_DISPOSITION=REJECT RPFILTER_DISPOSITION=DROP SMURF_DISPOSITION=DROP SFILTER_DISPOSITION=DROP TCP_FLAGS_DISPOSITION=DROP UNTRACKED_DISPOSITION=DROP ################################################################################ # P A C K E T M A R K L A Y O U T ################################################################################ TC_BITS=8 PROVIDER_BITS=2 PROVIDER_OFFSET=16 MASK_BITS=8 ZONE_BITS=0 ################################################################################ # L E G A C Y O P T I O N # D O N O T D E L E T E O R A L T E R ################################################################################ IPSECFILE=zonesI don't believe that there is anything remarkable there

Mirrors # Accept traffic from Shorewall Mirrors SSHLIMIT SSH_BL tarpit inline # Wrapper for TARPIT

#TARGET SOURCE DEST PROTO DEST SOURCE ORIGINAL RATE # PORT PORT(S) DEST LIMIT ?COMMENT Accept traffic from Mirrors ?FORMAT 2 DEFAULTS - $1 $MIRRORS I make this into an action so the rather long list of rules go into their own chain. See the rules file -- this action is used for rsync traffic.

#ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL RATE USER/ MARK CONNLIMIT TIME HEADERS SWITCH HELPER # PORT PORT(S) DEST LIMIT GROUP $LOG { rate=s:1/min } TARPIT

fw firewall loc ip #Local Zone net ipv4 #Internet dmz ipv4 #LXC Containers smc:net ip #10.0.1.0/24

#ZONE INTERFACE BROADCAST OPTIONS loc INT_IF dhcp,physical=$INT_IF,ignore=1,wait=5,routefilter,nets=172.20.1.0/24,routeback,tcpflags=0 net COMB_IF optional,sourceroute=0,routefilter=0,arp_ignore=1,proxyarp=0,physical=$COMB_IF,upnp,nosmurfs,tcpflags net COMC_IF optional,sourceroute=0,routefilter=0,arp_ignore=1,proxyarp=0,physical=$COMC_IF,upnp,nosmurfs,tcpflags,dhcp dmz br0 routeback,proxyarp=1,required,wait=30 - ifb0 ignore

#ZONE HOST(S) OPTIONS smc COMB_IF:10.1.10.0/24 mss=1400 smc COMC_IF:10.0.0.0/24

#SOURCE DEST POLICY LOG LIMIT:BURST # LEVEL $FW dmz REJECT $LOG $FW net REJECT $LOG ?else $FW dmz REJECT $LOG $FW net REJECT $LOG $FW all ACCEPT smc loc ACCEPT smc fw CONTINUE smc net NONE loc smc ACCEPT loc net ACCEPT loc fw REJECT $LOG net net NONE net smc NONE net all DROP:Drop $LOG 8/sec:30 dmz fw REJECT:Reject $LOG all all REJECT:Reject $LOG

#ACTION CHAIN SOURCE DESTINATION PROTO DEST SOURCE USER/ MARK IPSEC # PORT(S) PORT(S) GROUP ?COMMENT ?SECTION PREROUTING ?SECTION INPUT ACCOUNT(fw-net,$FW_NET) - COMB_IF COUNT - COMB_IF - tcp - 80 COUNT - COMC_IF - tcp - 80 COUNT - br0:70.90.191.124 - tcp 80 = ?SECTION OUTPUT ACCOUNT(fw-net,$FW_NET) - - COMB_IF COUNT - - COMB_IF tcp 80 COUNT - - COMC_IF tcp 80 ?SECTION FORWARD ACCOUNT(dmz-net,$DMZ_NET) - br0 COMB_IF ACCOUNT(dmz-net,$DMZ_NET) - COMB_IF br0 ACCOUNT(loc-net,$INT_NET) - COMB_IF INT_IF ACCOUNT(loc-net,$INT_NET) - INT_IF COMB_IF

WHITELIST net:70.90.191.126 all BLACKLIST net:+blacklist all BLACKLIST net all udp 1023:1033,1434,5948,23773 DROP net all tcp 57,1433,1434,2401,2745,3127,3306,3410,4899,5554,5948,6101,8081,9898,23773 DROP net:63.149.127.103 all DROP net:175.143.53.113 all DROP net:121.134.248.190 all REJECT net:188.176.145.22 dmz tcp 25 DROP net fw udp 111 Invalid(DROP) net all

if [ -f /var/lib/dhcpcd/dhcpcd-eth1.info ]; then . /var/lib/dhcpcd/dhcpcd-eth1.info echo $GATEWAY fi The Comcast line has a dynamic IP address assigned with the help of dhclient.

local status status=0 [ -f /etc/shorewall/${1}.status ] && status=$(cat /etc/shorewall/${1}.status) return $statusFor use with lsm.

start_lsm() { # # Kill any existing lsm process(es) # killall lsm 2> /dev/null # # Create the Shorewall-specific part of the LSM configuration. This file is # included by /etc/lsm/lsm.conf # # ComcastB has a static gateway while ComcastC's is dynamic # cat <<EOF > /etc/lsm/shorewall.conf connection { name=ComcastB checkip=76.28.230.1 device=$COMB_IF ttl=2 } connection { name=ComcastC checkip=76.28.230.188 device=$COMC_IF ttl=3 } EOF cat <<EOF > /var/lib/shorewall/eth0.info ETH0_GATEWAY=$SW_ETH0_GATEWAY ETH0_ADDRESS=$SW_ETH0_ADDRESS EOF # # Clear status on start # if [ $COMMAND = start ]; then for interface in eth0 eth1; do echo 0 > ${VARDIR}/$interface.status done fi # # Run LSM -- by default, it forks into the background # /usr/local/sbin/lsm /etc/lsm/lsm.conf >> /var/log/lsm }This function configures and starts lsm.

#INTERFACE SOURCE ADDRESS PROTO ?COMMENT Use the SMC's local net address when communicating with that net COMB_IF:10.1.10.0/24 0.0.0.0/0 %{SMC_ADDR} ?COMMENT Masquerade Local Network COMB_IF !70.90.191.120/29 70.90.191.121 ; -m statistic --mode random --probability 0.50 COMB_IF !70.90.191.120/29 70.90.191.123 COMC_IF 0.0.0.0/0 #INT_IF:172.20.1.15 172.20.1.0/24 172.20.1.254 br0 70.90.191.120/29 70.90.191.121 tcp 80 I split connections out of COMB_IF between the two IP addresses configured on the interface.

?FORMAT 2 #ACTION SOURCE DESTINATION PROTO DEST SOURCE USER/ # PORT(S) PORT(S) GROUP # DROP net - udp 3551 NOTRACK net - tcp 23 NOTRACK loc 172.20.1.255 udp NOTRACK loc 255.255.255.255 udp NOTRACK $FW 255.255.255.255 udp NOTRACK $FW 172.20.1.255 udp NOTRACK $FW 70.90.191.127 udp NOTRACK net:192.88.99.1 - NOTRACK $FW 192.88.99.1 ?if $AUTOHELPERS ?if __CT_TARGET && __AMANDA_HELPER CT:helper:amanda all - udp 10080 ?endif ?if __CT_TARGET && __FTP_HELPER CT:helper:ftp all - tcp 21 ?endif ?if __CT_TARGET && __H323_HELPER CT:helper:RAS all - udp 1719 CT:helper:Q.931 all - tcp 1720 ?endif ?if __CT_TARGET && __IRC_HELPER CT:helper:irc all - tcp 6667 ?endif ?if __CT_TARGET && __NETBIOS_NS_HELPER CT:helper:netbios-ns all - udp 137 ?endif ?if __CT_TARGET && __PPTP_HELPER CT:helper:pptp all - tcp 1729 ?endif ?if __CT_TARGET && __SANE_HELPER CT:helper:sane all - tcp 6566 ?endif #?if __CT_TARGET && __SIP_HELPER #CT:helper:sip all - udp 5060 #?endif ?if __CT_TARGET && __SNMP_HELPER CT:helper:snmp all - udp 161 ?endif ?if __CT_TARGET && __TFTP_HELPER CT:helper:tftp all - udp 69 ?endif ?endif This file omits the 6to4 traffic originating from 6to4 relays as well as broadcast traffic (which Netfilter doesn't handle).

#NAME NUMBER MARK DUPLICATE INTERFACE GATEWAY OPTIONS COPY ?IF $STATISTICAL ComcastB 1 0x10000 - COMB_IF 70.90.191.126 loose,load=0.66666667,fallback ComcastC 2 0x20000 - COMC_IF detect loose,load=0.33333333 ?ELSE ComcastB 1 0x10000 - COMB_IF 70.90.191.126 nohostroute,loose,balance=2 ComcastC 2 0x20000 - COMC_IF detect nohostroute,loose,balance ?ENDIF ?IF $PROXY && ! $SQUID2 TProxy 3 - - lo - tproxy ?ENDIF root@gateway:/etc/shorewall# See the Multi-ISP article for an explaination of the multi-ISP aspects of this configuration.

<empty>As mentioned above, I set the proxyarp on the associated external interface instead of defining proxy ARP in this file.

if [ -z "$(ps ax | grep 'lsm ' | grep -v 'grep ' )" ]; then start_lsm fi chmod 744 ${VARDIR}/stateIf lsm isn't running then start it. Make the state file world-readable.

#SOURCE DEST PROVIDER PRIORITY 70.90.191.121,\ 70.90.191.123 - ComcastB 1000 &COMC_IF - ComcastC 1000 br0 - ComcastB 11000 172.20.1.191 - ComcastB 1000These entries simply ensure that outgoing traffic uses the correct interface.

#TARGET HOST(S) DEST PROTO DEST SOURCE # PORT(S) PORT(S) ACCEPT INT_IF:172.20.1.0/24 $FW NOTRACK COMB_IF - 41 NOTRACK $FW COMB_IF 41 ACCEPT COMB_IF $FW 41 ACCEPT COMC_IF $FW udp 67:68Keep the lights on while Shorewall is stopped.

################################################################################################################################################################################################ #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL RATE USER/ MARK CONNLIMIT TIME HEADERS SWITCH # PORT(S) PORT(S) DEST LIMIT GROUP ################################################################################################################################################################################################ ?if $VERSION < 40500 ?SHELL echo " ERROR: Shorewall version is too low" >&2; exit 1 ?endif ?begin perl 1; ?end perl ?SECTION ALL #ACCEPT net:smc.shorewall.net $FW #RST(LOG) all all ?SECTION ESTABLISHED #SSH(REJECT) net loc:1.2.3.4 { time=timestart=18:48 } ?SECTION RELATED ACCEPT all dmz:70.90.191.125 tcp 61001:62000 { helper=ftp } ACCEPT dmz all tcp { helper=ftp } ACCEPT all net tcp { helper=ftp } ACCEPT all all icmp RST(ACCEPT) all all tcp ACCEPT dmz dmz ACCEPT $FW all ?SECTION INVALID DROP net all ?SECTION UNTRACKED ACCEPT net:192.88.99.1 $FW 41 tarpit net all tcp 23 Broadcast(ACCEPT)\ all $FW ACCEPT all $FW udp CONTINUE loc $FW CONTINUE $FW all ?SECTION NEW DNSAmp(ACCEPT) loc fw REJECT:$LOG loc net tcp 25 #Stop direct loc->net SMTP (Comcast uses submission). REJECT:$LOG loc net udp 1025:1031 #MS Messaging ?COMMENT Stop NETBIOS crap REJECT all net tcp 137,445 REJECT all net udp 137:139 ?COMMENT Disallow port 333 REJECT all net tcp 3333 ?COMMENT Stop Teredo REJECT all net udp 3544 ?COMMENT Stop my idiotic work laptop from sending to the net with an HP source IP address { action=DROP, source=loc:!172.20.0.0/22, dest=net } # ?COMMENT #dropInvalid net all tcp ################################################################################################################################################################################################ # Local network to DMZ # DNAT loc dmz:70.90.191.125 tcp www - 70.90.191.123 ACCEPT loc dmz tcp ssh,smtp,465,548,587,www,ftp,imaps,https,5901:5903 ACCEPT loc dmz udp 3478:3479,33434:33524 ################################################################################################################################################################################################ # SMC network to DMZ # ACCEPT smc dmz tcp ssh,smtp,465,587,www,ftp,imaps,https,5901:5903 ACCEPT smc dmz udp 33434:33524 ################################################################################################################################################################################################ # SMC network to LOC # ################################################################################################################################################################################################ # Local Network to Firewall # ?IF $SQUID2 REDIRECT loc 3128 tcp 80 {origdest="!172.20.1.0/24,70.90.191.120/29,155.98.64.80,81.19.16.0/21,10.1.10.1"} ?ENDIF ACCEPT loc fw udp 53,111,123,177,192,631,1024: SMB(ACCEPT) loc fw ACCEPT loc fw tcp 22,53,80,111,229,548,2049,3000,32765:61000 ACCEPT loc fw tcp 3128 mDNS(ACCEPT) loc fw ACCEPT loc fw tcp 5001 ACCEPT loc:172.20.2.149 fw tcp 3551 #APCUPSD ################################################################################################################################################################################################ # SMC Network to Firewall # ACCEPT smc fw udp 53,111,123,177,192,631,1024: SMB(ACCEPT) smc fw ACCEPT smc fw tcp 22,53,111,548,2049,3000,3128,32765:32768,49152 mDNS(ACCEPT) smc fw ################################################################################################################################################################################################ # SMC Network to multiple destinations # Ping(ACCEPT) smc dmz,fw ################################################################################################################################################################################################ # Local Network to Internet #REJECT:info loc net tcp 80,443 ################################################################################################################################################################################################ # Local Network to multiple destinations # Ping(ACCEPT) loc dmz,fw ################################################################################################################################################################################################ # Internet to ALL -- drop NewNotSyn packets # dropNotSyn net fw,loc,smc tcp AutoBL(SSH,60,-,-,-,-,$LOG)\ net all tcp 22 ################################################################################################################################################################################################ # Internet to DMZ # ACCEPT net dmz udp 33434:33454 ACCEPT net dmz tcp 25 - - smtp:2/min:4,mail:60/min:100 DNAT- net 70.90.191.125 tcp https - 70.90.191.123 DNAT- net 70.90.191.125 tcp http - 70.90.191.123 DNAT- all 172.20.2.44 tcp ssh - 70.90.191.123 ACCEPT net dmz:70.90.191.122 tcp https,imaps ACCEPT net dmz:70.90.191.124 tcp http,https,465,587,imaps ACCEPT net dmz:70.90.191.125 tcp http,ftp Mirrors(ACCEPT:none)\ #Continuation test net dmz tcp 873 Ping(ACCEPT) net dmz DROP net dmz tcp http,https ################################################################################################################################################################################################ # # UPnP # ACCEPT loc fw udp 1900 forwardUPnP net loc # # Silently Handle common probes # REJECT net loc tcp www,ftp,https DROP net loc icmp 8 ################################################################################################################################################################################################ # DMZ to DMZ # ################################################################################################################################################################################################ DNAT dmz dmz:70.90.191.125:80 tcp 80 - 70.90.191.121 # DMZ to Internet # ACCEPT dmz net udp ntp,domain ACCEPT dmz net tcp domain,echo,ftp,ssh,smtp,whois,www,81,nntp,https,993,465,587,2401,2702,2703,5901,8080,9418,11371 # # Some FTP clients seem prone to sending the PORT command split over two packets. This prevents the FTP connection tracking # code from processing the command and setting up the proper expectation # The following rule allows active FTP to work in these cases # but logs the connection so I can keep an eye on this potential security hole. # ACCEPT:$LOG dmz net tcp 1024: 20 Ping(ACCEPT) dmz all ################################################################################################################################################################################################ # DMZ to fw # DNS(ACCEPT) dmz $FW HTTP(ACCEPT) dmz $FW Ping(ACCEPT) dmz $FW ################################################################################################################################################################################################ # Internet to Firewall # REJECT net fw tcp www,ftp,https ACCEPT net fw udp 3478:3479,33434:33454 ACCEPT net fw tcp 22 - - s:ssh:1/min:3 ACCEPT net fw tcp 51413 ?COMMENT IPv6 tunnel ping ACCEPT net fw:70.90.191.121,70.90.191.122/31\ icmp 8 ACCEPT net:COMC_IF fw icmp 8 ?COMMENT ################################################################################################################################################################################################ # Firewall to DMZ # ACCEPT fw dmz tcp www,ftp,ssh,smtp,https,465,587,993,3128,5901 REJECT fw dmz udp 137:139 Ping(ACCEPT) fw dmz ################################################################################################################################################################################################ # Firewall to NET # DNS(ACCEPT) fw net NTP(ACCEPT) fw net DNAT- fw 172.20.1.254:3128 tcp 80 - - - !:proxy ACCEPT+ fw net tcp 43,80,443,3466 - - - - ACCEPT fw net tcp 3128 - - - !:proxy FTP(ACCEPT) fw net - - - - - proxy Git(ACCEPT) fw net - - - - - teastep ACCEPT fw net tcp 22 NNTP(ACCEPT) fw net Ping(ACCEPT) fw net ACCEPT fw net udp 33434:33524 #ACCEPT:info fw net - - - - - root ACCEPT fw net tcp 25,143,993 - - - teastep ################################################################################################################################################################################################ # ?COMMENT Freenode Probes DROP net:\ 82.96.96.3,\ 85.190.0.3 any!loc,smc ?COMMENT ################################################################################################################################################################################################

if [ "$COMMAND" = start -o -z "$(ps ax | grep 'lsm ' | grep -v 'grep ' )" ]; then start_lsm fi If lsm isn't running then start it.

if [ "$COMMAND" = stop -o "$COMMAND" = clear ]; then killall lsm 2> /dev/null fi chmod 744 ${VARDIR}/stateKill lsm if the command is stop or clear. Make the state file world-readable.

#TYPE ZONE GATEWAY GATEWAY # ZONE 6to4 net 216.218.226.238 6to4 net 192.88.99.1