extern/shorewall_code
1
0
Fork 1
mirror of https://gitlab.com/shorewall/code.git synced 2024-12-25 07:38:57 +01:00
Code Issues Packages Projects Releases Wiki Activity
91fb066029
shorewall_code/Shorewall/rules
teastep b66929a65e Large merge of function from EXPERIMENTAL to HEAD. 
1) Elimination of the "shorewall monitor" command.

2) The /etc/shorewall/ipsec and /etc/shorewall/zones file are combined into
a single /etc/shorewall/zones file. This is done in an upwardly-compatible
way so that current users can continue to use their existing files.

3) Support has been added for the arp_ignore interface option.

4) DROPINVALID has been removed from shorewall.conf. Behavior is as if
DROPINVALID=No was specified.

5) The 'nobogons' option and BOGON_LOG_LEVEL are removed.

6) Error and warning messages have been made easier to spot by using
capitalization (e.g., ERROR: and WARNING:).

7) The /etc/shorewall/policy file now contains a new connection policy and a
policy for ESTABLISHED packets. Useful for users of snort-inline who want to
pass all packets to the QUEUE target.

8) A new 'critical' option has been added to /etc/shorewall/routestopped.
Shorewall insures communication between the firewall and 'critical' hosts
throughout start, restart, stop and clear. Useful for diskless firewall's
with NFS-mounted file systems, LDAP servers, Crossbow, etc.

9) Macros. Macros are very similar to actions but are easier to use, allow
parameter substitution and are more efficient. Almost all of the standard
actions have been converted to macros in the EXPERIMENTAL branch.

10) The default value of ADD_IP_ALIASES in shorewall.conf is changed to No.

11) If you have 'make' installed on your firewall, then when you use
the '-f' option to 'shorewall start' (as happens when you reboot),
if your /etc/shorewall/ directory contains files that were modified
after Shorewall was last restarted then Shorewall is started using
the config files rather than using the saved configuration.


git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@2409 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
2005-07-25 23:08:09 +00:00

372 lines
15 KiB
Plaintext
Executable File
Raw Blame History

#
# 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 match is the one
# that determines the disposition of the request.
#
# In most places where an IP address or subnet is allowed, you
# can preceed the address/subnet with "!" (e.g., !192.168.1.0/24) to
# 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.
#-------------------------------------------------------------------------------#
# Columns are:
#
# ACTION ACCEPT, DROP, REJECT, DNAT, DNAT-, 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.
# 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 REDIRET but only generates the
# REDIRECT iptables rule 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) 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
# /usr/share/shorewall/actions.std then:
#
# - If the log level is followed by "!' then all rules
# in the action are logged at the log level.
#
# - If the log level is not followed by "!" then only
# those rules in the action that do not specify
# logging are logged at the specified level.
#
# - 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
# (http://www.gnumonks.org/projects/ulogd).
#
# Actions specifying logging may be followed by a
# log tag (a string of alphanumeric characters)
# are appended to the string generated by the
# LOGPREFIX (in /etc/shorewall/shorewall.conf).
#
# Example: ACCEPT:info:ftp would include 'ftp '
# at the end of the log prefix generated by the
# LOGPREFIX setting.
#
# SOURCE Source hosts to which the rule applies. May be a zone
# defined in /etc/shorewall/zones, $FW to indicate the
# firewall itself, "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.
#
# 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
# "-" as a separator.
#
# 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.
#
# dmz:192.168.2.2 Host 192.168.2.2 in the DMZ
#
# net:155.186.235.0/24 Subnet 155.186.235.0/24 on the
# Internet
#
# 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
# Hosts 192.0.2.11-192.0.2.17 in
# the net zone.
#
# Alternatively, clients may be specified by interface
# by appending ":" to the zone name followed by the
# interface name. For example, loc:eth1 specifies a
# client that communicates with the firewall system
# through eth1. This may be optionally followed by
# another colon (":") and an IP/MAC/subnet address
# 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, "all" or "none".
#
# 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.
#
# 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:
#
# 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.
#
# 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: 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
# contain the port number on the firewall that the
# request should be redirected to.
#
# 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).
#
# 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 ields are supplied.
# In that case, it is suggested that this field contain
# "-"
#
# If your kernel contains multi-port match support, then
# only a single Netfilter rule will be generated if in
# this list and the CLIENT PORT(S) list below:
# 1. There are 15 or less ports listed.
# 2. No port ranges are included.
# Otherwise, a separate rule will be generated for each
# port.
#
# CLIENT PORT(S) (Optional) Port(s) used by the client. If omitted,
# any source port is acceptable. Specified as a comma-
# separated list of port names, port numbers or port
# 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.
#
# If your kernel contains multi-port match support, then
# only a single Netfilter rule will be generated if in
# this list and the DEST PORT(S) list above:
# 1. There are 15 or less ports listed.
# 2. No port ranges are included.
# Otherwise, a separate rule will be generated for each
# port.
#
# 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.
# This is usually most useful with the REDIRECT target
# where you want to redirect traffic destined for
# particular set of hosts.
#
# 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.
#
# 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 assumed. There may be no
# no whitespace embedded in the specification.
#
# 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>][+<program name>]
#
# 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).
#
# 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
# +upnpd #program named 'upnpd'
#
# Example: Accept SMTP requests from the DMZ to the internet
#
# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL
# # PORT PORT(S) DEST
# ACCEPT dmz net tcp smtp
#
# Example: Forward all ssh and http connection requests from the internet
# to local system 192.168.1.3
#
# #ACTION SOURCE DEST PROTO DEST SOURCE ORIGINAL
# # PORT PORT(S) DEST
# DNAT net loc:192.168.1.3 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
#
# #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
#
# 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
# # PORT PORT(S) DEST
# REDIRECT loc 3128 tcp www - !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
# 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
#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE
Reference in New Issue View Git Blame Copy Permalink