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more samples...for 2.6..

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git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@2533 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
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judas_iscariote 2005-08-22 03:34:26 +00:00
parent 756f156166
commit c6b6864834
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322
Samples/three-interfaces/interfaces
View File

@ -1,32 +1,33 @@
#
# Shorewall 2.0 -- Sample Interface File For Three Interfaces
#
# /etc/shorewall/interfaces
# Shorewall version 2.6 - Interfaces File
#
# /etc/shorewall/interfaces
#
# You must add an entry in this file for each network interface on your
# firewall system.
#
# Columns are:
#
# ZONE
# Zone for this interface. Must match the short name
# ZONE Zone for this interface. Must match the short name
# of a zone defined in /etc/shorewall/zones.
#
# If the interface serves multiple zones that will be
# defined in the /etc/shorewall/hosts file, you should
# place "-" in this column.
#
# INTERFACE
# Name of interface. Each interface may be listed only
# INTERFACE Name of interface. Each interface may be listed only
# once in this file. You may NOT specify the name of
# an alias (e.g., eth0:0) here; see
# http://www.shorewall.net/FAQ.htm#faq18
#
# There is no need to define the loopback interface (lo)
# You may specify wildcards here. For example, if you
# want to make an entry that applies to all PPP
# interfaces, use 'ppp+'.
#
# There is no need to define the loopback interface (lo)
# in this file.
#
# BROADCAST
# The broadcast address for the subnetwork to which the
# BROADCAST The broadcast address for the subnetwork to which the
# interface belongs. For P-T-P interfaces, this
# column is left blank.If the interface has multiple
# addresses on multiple subnets then list the broadcast
@ -36,156 +37,207 @@
# will detect the broadcast address for you. If you
# select this option, the interface must be up before
# the firewall is started, you must have iproute
# installed and the interface must only be associated
# with a single subnet.
#
# installed.
#
# If you don't want to give a value for this column but
# you want to enter a value in the OPTIONS column, enter
# "-" in this column.
#
# OPTIONS
# A comma-separated list of options including the
# OPTIONS A comma-separated list of options including the
# following:
#
# dhcp
# Interface is managed by DHCP or used by
# a DHCP server running on the firewall or
# you have a static IP but are on a LAN
# segment with lots of Laptop DHCP clients.
# norfc1918
# This interface should not receive
# any packets whose source is in one
# of the ranges reserved by RFC 1918
# (i.e., private or "non-routable"
# addresses. If packet mangling is
# enabled in shorewall.conf, packets
# whose destination addresses are
# reserved by RFC 1918 are also rejected.
# nobogons
# This interface should not receive
# any packets whose source is in one
# of the ranges reserved by IANA (this
# option does not cover those ranges
# reserved by RFC 1918 -- see above).
# dhcp - Specify this option when any of
# the following are true:
# 1. the interface gets its IP address
# via DHCP
# 2. the interface is used by
# a DHCP server running on the firewall
# 3. you have a static IP but are on a LAN
# segment with lots of Laptop DHCP
# clients.
# 4. the interface is a bridge with
# a DHCP server on one port and DHCP
# clients on another port.
#
# I PERSONALLY RECOMMEND AGAINST USING
# THE 'nobogons' OPTION.
# routefilter
# Turn on kernel route filtering for this
# interface (anti-spoofing measure). This
# option can also be enabled globally in
# the /etc/shorewall/shorewall.conf file.
# blacklist
# Check packets arriving on this interface
# against the /etc/shorewall/blacklist
# file.
# logmartians
# Turn on kernel martian logging (logging
# of packets with impossible source
# addresses. It is suggested that if you
# set routefilter on an interface that
# you also set logmartians. This option
# may also be enabled globally in the
# /etc/shorewall/shorewall.conf file.
# maclist
# Connection requests from this interface
# are compared against the contents of
# /etc/shorewall/maclist. If this option
# is specified, the interface must be
# an ethernet NIC and must be up before
# Shorewall is started.
# tcpflags
# Packets arriving on this interface are
# checked for certain illegal combinations
# of TCP flags. Packets found to have
# such a combination of flags are handled
# according to the setting of
# TCP_FLAGS_DISPOSITION after having been
# logged according to the setting of
# TCP_FLAGS_LOG_LEVEL.
# proxyarp
# Sets /proc/sys/net/ipv4/conf/<interface>/proxy_arp.
# norfc1918 - This interface should not receive
# any packets whose source is in one
# of the ranges reserved by RFC 1918
# (i.e., private or "non-routable"
# addresses. If packet mangling or
# connection-tracking match is enabled in
# your kernel, packets whose destination
# addresses are reserved by RFC 1918 are
# also rejected.
#
# routefilter - turn on kernel route filtering for this
# interface (anti-spoofing measure). This
# option can also be enabled globally in
# the /etc/shorewall/shorewall.conf file.
#
# logmartians - turn on kernel martian logging (logging
# of packets with impossible source
# addresses. It is suggested that if you
# set routefilter on an interface that
# you also set logmartians. This option
# may also be enabled globally in the
# /etc/shorewall/shorewall.conf file.
#
# blacklist - Check packets arriving on this interface
# against the /etc/shorewall/blacklist
# file.
#
# maclist - Connection requests from this interface
# are compared against the contents of
# /etc/shorewall/maclist. If this option
# is specified, the interface must be
# an ethernet NIC and must be up before
# Shorewall is started.
#
# tcpflags - Packets arriving on this interface are
# checked for certain illegal combinations
# of TCP flags. Packets found to have
# such a combination of flags are handled
# according to the setting of
# TCP_FLAGS_DISPOSITION after having been
# logged according to the setting of
# TCP_FLAGS_LOG_LEVEL.
#
# proxyarp -
# Sets
# /proc/sys/net/ipv4/conf/<interface>/proxy_arp.
# Do NOT use this option if you are
# employing Proxy ARP through entries in
# /etc/shorewall/proxyarp. This option is
# intended soley for use with Proxy ARP
# sub-networking as described at:
# http://www.tldp.org/HOWTO/mini/Proxy-ARP-Subnet
# netnotsyn
# TCP packets that don't have the SYN flag set and
# which are not part of an established connection
# will be accepted from this interface, even if
# NEWNOTSYN=No has been specified in
# /etc/shorewall/shorewall.conf. In other
# words, packets coming in on this interface
# are processed as if NEWNOTSYN=Yes had been
# specified in /etc/shorewall/shorewall.conf.
#
# This option has no effect if NEWNOTSYN=Yes.
# newnotsyn - TCP packets that don't have the SYN
# flag set and which are not part of an
# established connection will be accepted
# from this interface, even if
# NEWNOTSYN=No has been specified in
# /etc/shorewall/shorewall.conf. In other
# words, packets coming in on this
# interface are processed as if
# NEWNOTSYN=Yes had been specified in
# /etc/shorewall/shorewall.conf.
#
# It is the opinion of the author that
# NEWNOTSYN=No creates more problems than
# it solves and I recommend against using
# that setting in shorewall.conf (hence
# making the use of the 'newnotsyn'
# interface option unnecessary).
# routeback
# If specified, indicates that Shorewall
# should include rules that allow filtering
# traffic arriving on this interface back
# out that same interface.
# arp_filter
# If specified, this interface will only respond
# to ARP who-has requests for IP addresses
# configured on the interface. If not specified,
# the interface can respond to ARP who-has requests
# for IP addresses on any of the firewall's interface.
# The interface must be up when shorewall is started.
# nosmurfs
# Filter packets for smurfs (packets with a broadcast
# address as the source).
# This option has no effect if
# NEWNOTSYN=Yes.
#
# Smurfs will be optionally logged based on the setting
# of SMURF_LOG_LEVEL in shorewall.conf. After logging,
# the packets are dropped.
# detectnets
# Automatically taylors the zone named in the ZONE column
# to include only those hosts routed through the interface.
# It is the opinion of the author that
# NEWNOTSYN=No creates more problems than
# it solves and I recommend against using
# that setting in shorewall.conf (hence
# making the use of the 'newnotsyn'
# interface option unnecessary).
#
# WARNING: DO NOT SET THE detectnets OPTION ON YOUR INTERNET INTERFACE!
# routeback - If specified, indicates that Shorewall
# should include rules that allow
# filtering traffic arriving on this
# interface back out that same interface.
#
# The order in which you list the options is not
# significant but the list should have no embedded white
# space.
# arp_filter - If specified, this interface will only
# respond to ARP who-has requests for IP
# addresses configured on the interface.
# If not specified, the interface can
# respond to ARP who-has requests for
# IP addresses on any of the firewall's
# interface. The interface must be up
# when Shorewall is started.
#
# Example 1:
# Suppose you have eth0 connected to a DSL modem,
# eth1 connected to your local network and eth2
# connected to your dmz. Assuming that your local
# subnet is 192.168.1.0/24 and your dmz subnet is
# 192.168.2.0/24 . The eth0 interface gets
# arp_ignore[=<number>]
# - If specified, this interface will
# respond to arp requests based on the
# value of <number>.
#
# 1 - reply only if the target IP address
# is local address configured on the
# incoming interface
#
# 2 - reply only if the target IP address
# is local address configured on the
# incoming interface and both with the
# sender's IP address are part from same
# subnet on this interface
#
# 3 - do not reply for local addresses
# configured with scope host, only
# resolutions for global and link
# addresses are replied
#
# 4-7 - reserved
#
# 8 - do not reply for all local
# addresses
#
# If no <number> is given then the value
# 1 is assumed
#
# WARNING -- DO NOT SPECIFY arp_ignore
# FOR ANY INTERFACE INVOLVED IN PROXY ARP.
#
# nosmurfs - Filter packets for smurfs
# (packets with a broadcast
# address as the source).
#
# Smurfs will be optionally logged based
# on the setting of SMURF_LOG_LEVEL in
# shorewall.conf. After logging, the
# packets are dropped.
#
# detectnets - Automatically taylors the zone named
# in the ZONE column to include only those
# hosts routed through the interface.
#
# upnp - Incoming requests from this interface
# may be remapped via UPNP (upnpd).
#
# WARNING: DO NOT SET THE detectnets OPTION ON YOUR
# INTERNET INTERFACE.
#
# The order in which you list the options is not
# significant but the list should have no embedded white
# space.
#
# GATEWAY This column is only meaningful if the 'default' OPTION
# is given -- it is ignored otherwise. You may specify
# the default gateway IP address for this interface here
# and Shorewall will use that IP address rather than any
# that it finds in the main routing table.
#
# Example 1: Suppose you have eth0 connected to a DSL modem and
# eth1 connected to your local network and that your
# local subnet is 192.168.1.0/24. The interface gets
# it's IP address via DHCP from subnet
# 206.191.149.192/27.
# 206.191.149.192/27. You have a DMZ with subnet
# 192.168.2.0/24 using eth2.
#
# Your entries for this setup would look like:
#
# #ZONE INTERFACE BROADCAST OPTIONS
# net eth0 206.191.149.223 dhcp
# local eth1 192.168.1.255
# dmz eth2 192.168.2.255
# net eth0 206.191.149.223 dhcp
# local eth1 192.168.1.255
# dmz eth2 192.168.2.255
#
# Example 2:
# The same configuration without specifying broadcast
# Example 2: The same configuration without specifying broadcast
# addresses is:
#
# #ZONE INTERFACE BROADCAST OPTIONS
# net eth0 detect dhcp
# loc eth1 detect
# dmz eth2 detect
# net eth0 detect dhcp
# loc eth1 detect
# dmz eth2 detect
#
##############################################################################
#ZONE INTERFACE BROADCAST OPTIONS
net eth0 detect dhcp,routefilter,norfc1918
loc eth1 detect
dmz eth2 detect
# Example 3: You have a simple dial-in system with no ethernet
# connections.
#
# net ppp0 -
#
# For additional information, see
# http://shorewall.net/Documentation.htm#Interfaces
#
###############################################################################
#ZONE INTERFACE BROADCAST OPTIONS GATEWAY
net eth0 detect tcpflags,dhcp,routefilter,norfc1918,nosmurfs,logmartians
loc eth1 detect tcpflags,detectnets,nosmurfs
dmz eth2 detect
#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE

427
Samples/three-interfaces/rules
View File

@ -1,12 +1,12 @@
#
# Shorewall version 2.2 -- Sample Rules File For Three Interfaces
#
# /etc/shorewall/rules
# Shorewall version 2.6 - Rules File
#
# /etc/shorewall/rules
#
# Rules in this file govern connection establishment. Requests and
# responses are automatically allowed using connection tracking. For any
# particular (source,dest) pair of zones, the rules are evaluated in the
# order in which they appear in this file and the first mactch is the one
# order in which they appear in this file and the first match is the one
# that determines the disposition of the request.
#
# In most places where an IP address or subnet is allowed, you
@ -14,75 +14,73 @@
# indicate that the rule matches all addresses except the address/subnet
# given. Notice that no white space is permitted between "!" and the
# address/subnet.
#
# WARNING: If you masquerade or use SNAT from a local system to the internet.
# you cannot use an ACCEPT rule to allow traffic from the internet to
# that system. You "must" use a DNAT rule instead.
#
#------------------------------------------------------------------------------
# WARNING: If you masquerade or use SNAT from a local system to the internet,
# you cannot use an ACCEPT rule to allow traffic from the internet to
# that system. You *must* use a DNAT rule instead.
#------------------------------------------------------------------------------
# Columns are:
#
# ACTION ACCEPT, DROP, REJECT, DNAT, DNAT-, REDIRECT, CONTINUE,
# LOG, QUEUE or an <action>.
#
# ACTION ACCEPT, DROP, REJECT, DNAT, DNAT-, REDIRECT,
# REDIRECT-, CONTINUE, LOG, QUEUE or an <action>.
#
# ACCEPT
# Allow the connection request.
# ACCEPT+
# Like ACCEPT but also excludes the
# connection from any subsequent
# DNAT[-] or REDIRECT[-] rules
# NONAT
# Excludes the connection from any
# subsequent DNAT[-] or REDIRECT[-]
# rules but doesn't generate a rule
# to accept the traffic.
# DROP
# Ignore the request.
# REJECT
# Disallow the request and return an
# icmp-unreachable or an RST packet.
# DNAT
# Forward the request to another
# system (and optionally another
# port).
# DNAT-
# Advanced users only.
# Like DNAT but only generates the
# DNAT iptables rule and not
# the companion ACCEPT rule.
# REDIRECT
# Redirect the request to a local
# port on the firewall.
# ACCEPT -- allow the connection request
# ACCEPT+ -- like ACCEPT but also excludes the
# connection from any subsequent
# DNAT[-] or REDIRECT[-] rules
# NONAT -- Excludes the connection from any
# subsequent DNAT[-] or REDIRECT[-]
# rules but doesn't generate a rule
# to accept the traffic.
# DROP -- ignore the request
# REJECT -- disallow the request and return an
# icmp-unreachable or an RST packet.
# DNAT -- Forward the request to another
# system (and optionally another
# port).
# DNAT- -- Advanced users only.
# Like DNAT but only generates the
# DNAT iptables rule and not
# the companion ACCEPT rule.
# SAME -- Similar to DNAT except that the
# port may not be remapped and when
# multiple server addresses are
# listed, all requests from a given
# remote system go to the same
# server.
# SAME- -- Advanced users only.
# Like SAME but only generates the
# NAT iptables rule and not
# the companion ACCEPT rule.
# REDIRECT -- Redirect the request to a local
# port on the firewall.
# REDIRECT-
# Advanced users only.
# Like REDIRECT but only generates the
# REDIRECT iptables rules and not the
# companion ACCEPT rule.
# CONTINUE
# (For experts only). Do Not Process
# any of the following rules for this
# (source zone,destination zone). If
# the source and/or destination IP
# address falls into a zone defined
# later in /etc/shorewall/zones, this
# connection request will be passed
# to the rules defined for that
# (those) zones(s).
# LOG
# Simply log the packet and continue.
# QUEUE
# Queue the packet to a user-space
# application such as ftwall.
# (http://p2pwall.sf.net).
# <action>
# The name of an action defined in
# /etc/shorewall/actions or in
# /usr/share/shorewall/actions.std.
# -- Advanced users only.
# Like REDIRET but only generates the
# REDIRECT iptables rule and not
# the companion ACCEPT rule.
#
# The ACTION may optionally be followed by ":" and a syslog log
# level (e.g, REJECT:info or DNAT:debug). This causes the packet
# to be logged at the specified level.
# CONTINUE -- (For experts only). Do not process
# any of the following rules for this
# (source zone,destination zone). If
# The source and/or destination IP
# address falls into a zone defined
# later in /etc/shorewall/zones, this
# connection request will be passed
# to the rules defined for that
# (those) zone(s).
# LOG -- Simply log the packet and continue.
# QUEUE -- Queue the packet to a user-space
# application such as ftwall
# (http://p2pwall.sf.net).
# <action> -- The name of an action defined in
# /etc/shorewall/actions or in
# /usr/share/shorewall/actions.std.
#
# The ACTION may optionally be followed
# by ":" and a syslog log level (e.g, REJECT:info or
# DNAT:debug). This causes the packet to be
# logged at the specified level.
#
# If the ACTION names an action defined in
# /etc/shorewall/actions or in
@ -98,9 +96,9 @@
# - The special log level 'none!' suppresses logging
# by the action.
#
# You may also specify ULOG (must be in upper case) as a
# log level. This will log to the ULOG target for routing
# to a separate log through use of ulogd.
# You may also specify ULOG (must be in upper case) as a
# log level.This will log to the ULOG target for routing
# to a separate log through use of ulogd
# (http://www.gnumonks.org/projects/ulogd).
#
# Actions specifying logging may be followed by a
@ -114,17 +112,21 @@
#
# SOURCE Source hosts to which the rule applies. May be a zone
# defined in /etc/shorewall/zones, $FW to indicate the
# firewall itself, or "all" If the ACTION is DNAT or
# REDIRECT, sub-zones of the specified zone may be
# excluded from the rule by following the zone name with
# "!' and a comma-separated list of sub-zone names.
# firewall itself, "all", "all+" or "none" If the ACTION
# is DNAT or REDIRECT, sub-zones of the specified zone
# may be excluded from the rule by following the zone
# name with "!' and a comma-separated list of sub-zone
# names.
#
# When "none" is used either in the SOURCE or DEST
# column, the rule is ignored.
#
# When "all" is used either in the SOURCE or DEST column
# intra-zone traffic is not affected. You must add
# separate rules to handle that traffic.
# intra-zone traffic is not affected. When "all+" is
# used, intra-zone traffic is affected.
#
# Except when "all" is specified, clients may be further
# restricted to a list of subnets and/or hosts by
# Except when "all[+]" is specified, clients may be
# further restricted to a list of subnets and/or hosts by
# appending ":" and a comma-separated list of subnets
# and/or hosts. Hosts may be specified by IP or MAC
# address; mac addresses must begin with "~" and must use
@ -133,22 +135,22 @@
# Hosts may be specified as an IP address range using the
# syntax <low address>-<high address>. This requires that
# your kernel and iptables contain iprange match support.
# If you kernel and iptables have ipset match support
# then you may give the name of an ipset prefaced by "+".
# The ipset name may be optionally followed by a number
# from 1 to 6 enclosed in square brackets ([]) to
# indicate the number of levels of source bindings to be
# matched.
#
# Some Examples:
# dmz:192.168.2.2 Host 192.168.2.2 in the DMZ
#
# net:155.186.235.1
# Host 155.186.235.1 on the Internet
# net:155.186.235.0/24 Subnet 155.186.235.0/24 on the
# Internet
#
# loc:192.168.1.0/24
# Subnet 192.168.1.0/24 on the
# Local Network
#
# net:155.186.235.1,155.186.235.2
# Hosts 155.186.235.1 and
# 155.186.235.2 on the Internet.
#
# loc:~00-A0-C9-15-39-78
# Host on the Local Network with
# loc:192.168.1.1,192.168.1.2
# Hosts 192.168.1.1 and
# 192.168.1.2 in the local zone.
# loc:~00-A0-C9-15-39-78 Host in the local zone with
# MAC address 00:A0:C9:15:39:78.
#
# net:192.0.2.11-192.0.2.17
@ -157,69 +159,78 @@
#
# Alternatively, clients may be specified by interface
# by appending ":" to the zone name followed by the
# interface name. For example, net:eth0 specifies a
# interface name. For example, loc:eth1 specifies a
# client that communicates with the firewall system
# through eth0. This may be optionally followed by
# through eth1. This may be optionally followed by
# another colon (":") and an IP/MAC/subnet address
# as described above (e.g., net:eth0:192.168.1.5).
# as described above (e.g., loc:eth1:192.168.1.5).
#
# DEST Location of Server. May be a zone defined in
# /etc/shorewall/zones, $FW to indicate the firewall
# itself or "all"
# itself, "all". "all+" or "none".
#
# Except when "all" is specified, the server may be
# When "none" is used either in the SOURCE or DEST
# column, the rule is ignored.
#
# When "all" is used either in the SOURCE or DEST column
# intra-zone traffic is not affected. When "all+" is
# used, intra-zone traffic is affected.
#
# Except when "all[+]" is specified, the server may be
# further restricted to a particular subnet, host or
# interface by appending ":" and the subnet, host or
# interface. See above.
#
# Restrictions:
# Restrictions:
#
# 1. MAC addresses are not allowed.
# 2. In DNAT rules, only IP addresses are
# allowed; no FQDNs or subnet addresses
# are permitted.
# 3. You may not specify both an interface and
# an address.
# 1. MAC addresses are not allowed.
# 2. In DNAT rules, only IP addresses are
# allowed; no FQDNs or subnet addresses
# are permitted.
# 3. You may not specify both an interface and
# an address.
#
# Unlike in the SOURCE column, you may specify a range of
# Like in the SOURCE column, you may specify a range of
# up to 256 IP addresses using the syntax
# <first ip>-<last ip>. When the ACTION is DNAT or DNAT-,
# the connections will be assigned to addresses in the
# range in a round-robin fashion.
#
# If you kernel and iptables have ipset match support
# then you may give the name of an ipset prefaced by "+".
# The ipset name may be optionally followed by a number
# from 1 to 6 enclosed in square brackets ([]) to
# indicate the number of levels of destination bindings
# to be matched. Only one of the SOURCE and DEST columns
# may specify an ipset name.
#
# The port that the server is listening on may be
# included and separated from the server's IP address by
# ":". If omitted, the firewall will not modifiy the
# destination port. A destination port may only be
# included if the ACTION is DNAT or REDIRECT.
#
# Example: net:155.186.235.1:25 specifies a Internet
# server at IP address 155.186.235.1 and listening on port
# 25. The port number MUST be specified as an integer
# Example: loc:192.168.1.3:3128 specifies a local
# server at IP address 192.168.1.3 and listening on port
# 3128. The port number MUST be specified as an integer
# and not as a name from /etc/services.
#
# If the ACTION is REDIRECT, this column needs only to
# if the ACTION is REDIRECT, this column needs only to
# contain the port number on the firewall that the
# request should be redirected to.
#
# PROTO Protocol - Must be "tcp", "udp", "icmp", "ipp2p",
# a number, or "all". "ipp2p" requires ipp2p match
# support in your kernel and iptables.
# PROTO Protocol - Must be "tcp", "udp", "icmp", a number, or
# "all".
#
# DEST PORT(S) Destination Ports. A comma-separated list of Port
# names (from /etc/services), port numbers or port
# ranges; if the protocol is "icmp", this column is
# interpreted as the destination icmp-type(s).
#
# If the protocol is ipp2p, this column is interpreted
# as an ipp2p option without the leading "--" (example "bit"
# for bit-torrent). If no port is given, "ipp2p" is
# assumed.
#
# A port range is expressed as <low port>:<high port>.
#
# This column is ignored if PROTOCOL = all but must be
# entered if any of the following fields are supplied.
# entered if any of the following ields are supplied.
# In that case, it is suggested that this field contain
# "-"
#
@ -237,8 +248,8 @@
# ranges.
#
# If you don't want to restrict client ports but need to
# specify an ORIGINAL DEST in the next column, then place
# "-" in this column.
# specify an ORIGINAL DEST in the next column, then
# place "-" in this column.
#
# If your kernel contains multi-port match support, then
# only a single Netfilter rule will be generated if in
@ -248,122 +259,156 @@
# Otherwise, a separate rule will be generated for each
# port.
#
# ORIGINAL DEST (0ptional -- only allowed if ACTION is DNAT[-] or
# REDIRECT[-]) If included and different from the IP
# ORIGINAL DEST (0ptional) -- If ACTION is DNAT[-] or REDIRECT[-]
# then if included and different from the IP
# address given in the SERVER column, this is an address
# on some interface on the firewall and connections to
# that address will be forwarded to the IP and port
# specified in the DEST column.
#
# A comma separated list of addresses may also be used.
# A comma-separated list of addresses may also be used.
# This is usually most useful with the REDIRECT target
# where you want to redirect traffic destined for
# a particular set of hosts.
# particular set of hosts.
#
# Finally, if the list of addresses begines with "!" then
# Finally, if the list of addresses begins with "!" then
# the rule will be followed only if the original
# destination address in the connection request does not
# match any of the addresses listed.
#
# RATE LIMIT You may rate-limit the rule by placing a value in this column:
# For other actions, this column may be included and may
# contain one or more addresses (host or network)
# separated by commas. Address ranges are not allowed.
# When this column is supplied, rules are generated
# that require that the original destination address
# matches one of the listed addresses. This feature is
# most useful when you want to generate a filter rule
# that corresponds to a DNAT- or REDIRECT- rule. In this
# usage, the list of addresses should not begin with "!".
#
# See http://shorewall.net/PortKnocking.html for an
# example of using an entry in this column with a
# user-defined action rule.
#
# RATE LIMIT You may rate-limit the rule by placing a value in
# this colume:
#
# <rate>/<interval>[:<burst>]
#
# Where <rate> is the number of connections per <interval> ("sec"
# or "min") and <burst> is the largest burst permitted. If no
# <burst> is given, a value of 5 is assummed. There may be no
# whitespace embedded in the specification.
# where <rate> is the number of connections per
# <interval> ("sec" or "min") and <burst> is the
# largest burst permitted. If no <burst> is given,
# a value of 5 is assumed. There may be no
# no whitespace embedded in the specification.
#
# Example:
# 10/sec:20
#
# If you place a rate limit in this column, you may not place
# a similiar limit in the ACTION column.
#
# USER/GROUP
# This column may only be non-empty if the SOURCE is the firewall itself.
# Example: 10/sec:20
#
# USER/GROUP This column may only be non-empty if the SOURCE is
# the firewall itself.
#
# The column may contain:
#
# [!][<user name or number>][:<group name or number>]
#
# When this column is non-empty, the rule applies only if the program
# generating the output is running under the effective <user> and/or
# <group> specified (or is NOT running under that id if "!" is given).
# [!][<user name or number>][:<group name or number>][+<program name>]
#
# Examples:
# joe # program must be run by joe.
# :kids # program must be run by a member of the 'kids' group.
# !:kids # program must not be run by a member of the 'kids' group.
# When this column is non-empty, the rule applies only
# if the program generating the output is running under
# the effective <user> and/or <group> specified (or is
# NOT running under that id if "!" is given).
#
# Also by default all outbound loc -> net communications are allowed.
# You can change this behavior in the sample policy file.
# Examples:
#
# Example: Accept www requests to the firewall.
# joe #program must be run by joe
# :kids #program must be run by a member of
# #the 'kids' group
# !:kids #program must not be run by a member
# #of the 'kids' group
# +upnpd #program named 'upnpd'
#
# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL RATE USER/
# # PORT PORT(S) DEST LIMIT GROUP
# ACCEPT net fw tcp http
# Example: Accept SMTP requests from the DMZ to the internet
#
# Example: Accept SMTP requests from the Local Network to the Internet
# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL
# # PORT PORT(S) DEST
# ACCEPT dmz net tcp smtp
#
# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL RATE USER/
# # PORT PORT(S) DEST LIMIT GROUP
# ACCEPT loc net tcp smtp
# Example: Forward all ssh and http connection requests from the
# internet to local system 192.168.1.3
#
# Example: Forward all ssh and http connection requests from the Internet
# to dmz system 192.168.2.3
# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL
# # PORT PORT(S) DEST
# DNAT net loc:192.168.1.3 tcp ssh,http
#
# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL RATE USER/
# # PORT PORT(S) DEST LIMIT GROUP
# DNAT net dmz:192.168.2.3 tcp ssh,http
# Example: Forward all http connection requests from the internet
# to local system 192.168.1.3 with a limit of 3 per second and
# a maximum burst of 10
#
# Example: Redirect all locally-originating www connection requests to
# port 3128 on the firewall (Squid running on the firewall
# system) except when the destination address is 192.168.2.2
# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL RATE
# # PORT PORT(S) DEST LIMIT
# DNAT net loc:192.168.1.3 tcp http - - 3/sec:10
#
# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL RATE USER/
# # PORT PORT(S) DEST LIMIT GROUP
# REDIRECT loc 3128 tcp www - !192.168.2.2
# Example: Redirect all locally-originating www connection requests to
# port 3128 on the firewall (Squid running on the firewall
# system) except when the destination address is 192.168.2.2
#
# Example: All http requests from the Internet to address
# 130.252.100.69 are to be forwarded to 192.168.1.3
# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL
# # PORT PORT(S) DEST
# REDIRECT loc 3128 tcp www - !192.168.2.2
#
# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL RATE USER/
# # PORT PORT(S) DEST LIMIT GROUP
# DNAT net loc:192.168.1.3 tcp 80 - 130.252.100.69
##############################################################################
#ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL RATE USER/
# PORT PORT(S) DEST LIMIT GROUP
# Example: All http requests from the internet to address
# 130.252.100.69 are to be forwarded to 192.168.1.3
#
# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL
# # PORT PORT(S) DEST
# DNAT net loc:192.168.1.3 tcp 80 - 130.252.100.69
#
# Example: You want to accept SSH connections to your firewall only
# from internet IP addresses 130.252.100.69 and 130.252.100.70
#
# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL
# # PORT PORT(S) DEST
# ACCEPT net:130.252.100.69,130.252.100.70 fw \
# tcp 22
#############################################################################################################
#ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL RATE USER/
# PORT PORT(S) DEST LIMIT GROUP
#
# Accept DNS connections from the firewall to the Internet
#
ACCEPT fw net tcp 53
ACCEPT fw net udp 53
DNS/ACCEPT fw net
#
#
# Accept SSH connections from the local network to the firewall and DMZ
#
ACCEPT loc fw tcp 22
ACCEPT loc dmz tcp 22
SSH/ACCEPT loc fw
SSH/ACCEPT loc dmz
#
# DMZ DNS access to the Internet
#
ACCEPT dmz net tcp 53
ACCEPT dmz net udp 53
DNS/ACCEPT dmz net
# Reject Ping from the "bad" net zone.
Ping/REJECT:none! net fw
#
# Make ping work bi-directionally between the dmz, net, Firewall and local zone
# (assumes that the loc-> net policy is ACCEPT).
# Make ping work bi-directionally between the dmz, net, Firewall and local zone
# (assumes that the loc-> net policy is ACCEPT).
#
ACCEPT net fw icmp 8
ACCEPT loc fw icmp 8
ACCEPT dmz fw icmp 8
ACCEPT loc dmz icmp 8
ACCEPT dmz loc icmp 8
ACCEPT dmz net icmp 8
Ping/ACCEPT loc fw
Ping/ACCEPT dmz fw
Ping/ACCEPT loc dmz
Ping/ACCEPT dmz loc
Ping/ACCEPT dmz net
ACCEPT fw net icmp
ACCEPT fw loc icmp
ACCEPT fw dmz icmp
ACCEPT net dmz icmp 8 # Only with Proxy ARP and
ACCEPT net loc icmp 8 # static NAT
# Uncomment this if using Proxy ARP and static NAT and you want to allow ping from
# the net zone to the dmz and loc
#Ping/ACCEPT net dmz
#Ping/ACCEPT net loc
#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE

83
Samples/three-interfaces/zones
View File

@ -1,20 +1,79 @@
#
# Shorewall 2.2 -- Sample Zone File For Two Interfaces
# /etc/shorewall/zones
# Shorewall version 2.6 - Zones File
#
# This file determines your network zones. Columns are:
# /etc/shorewall/zones
#
# ZONE Short name of the zone (5 Characters or less in length).
# DISPLAY Display name of the zone
# COMMENTS Comments about the zone
# This file determines your network zones.
#
# Columns are:
#
# ZONE Short name of the zone (5 Characters or less in length).
# The names "all" and "none" are reserved and may not be
# used as zone names.
#
# IPSEC Yes -- Communication with all zone hosts is encrypted
# ONLY Your kernel and iptables must include policy
# match support.
# No -- Communication with some zone hosts may be encrypted.
# Encrypted hosts are designated using the 'ipsec'
# option in /etc/shorewall/hosts.
#
# OPTIONS, A comma-separated list of options as follows:
# IN OPTIONS,
# OUT OPTIONS reqid=<number> where <number> is specified
# using setkey(8) using the 'unique:<number>
# option for the SPD level.
#
# spi=<number> where <number> is the SPI of
# the SA used to encrypt/decrypt packets.
#
# proto=ah|esp|ipcomp
#
# mss=<number> (sets the MSS field in TCP packets)
#
# mode=transport|tunnel
#
# tunnel-src=<address>[/<mask>] (only
# available with mode=tunnel)
#
# tunnel-dst=<address>[/<mask>] (only
# available with mode=tunnel)
#
# strict Means that packets must match all rules.
#
# next Separates rules; can only be used with
# strict..
#
# Example:
# mode=transport,reqid=44
#
# The options in the OPTIONS column are applied to both incoming
# and outgoing traffic. The IN OPTIONS are applied to incoming
# traffic (in addition to OPTIONS) and the OUT OPTIONS are
# applied to outgoing traffic.
#
# If you wish to leave a column empty but need to make an entry
# in a following column, use "-".
#
# THE ORDER OF THE ENTRIES IN THIS FILE IS IMPORTANT IF YOU HAVE NESTED OR
# OVERLAPPING ZONES DEFINED THROUGH /etc/shorewall/hosts.
#
# See http://www.shorewall.net/Documentation.html#Nested
# See http://www.shorewall.net/Documentation.htm#Nested
#------------------------------------------------------------------------------
# Example zones:
#
#ZONE DISPLAY COMMENTS
net Net Internet
loc Local Local Networks
dmz DMZ Demilitarized Zone
#LAST LINE -- ADD YOUR ENTRIES ABOVE THIS LINE -- DO NOT REMOVE
# You have a three interface firewall with internet, local and DMZ
# interfaces.
#
# #ZONE IPSEC OPTIONS IN OUT
# net
# loc
# dmz
#
###############################################################################
#ZONE IPSEC OPTIONS IN OUT
# ONLY OPTIONS OPTIONS
net
loc
dmz
#LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE

2
Samples/two-interfaces/interfaces
View File

@ -238,5 +238,5 @@
###############################################################################
#ZONE INTERFACE BROADCAST OPTIONS GATEWAY
net eth0 detect dhcp,tcpflags,norfc1918,routefilter,nosmurfs,logmartians
loc eth1 detect tcpflags,detectnets
loc eth1 detect tcpflags,detectnets,nosmurfs
#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE