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shorewall-secmarks(5)

NAME

   secmarks - Shorewall file

SYNOPSIS

   /etc/shorewall/secmarks

DESCRIPTION

       Important
       Unlike rules in the shorewall-rules[1](5) file, evaluation of rules
       in this file will continue after a match. So the final secmark for
       each packet will be the one assigned by the LAST rule that matches.

   The secmarks file is used to associate an SELinux context with packets.
   It was added in Shorewall version 4.4.13.

   The columns in the file are as follows (where the column name is
   followed by a different name in parentheses, the different name is used
   in the alternate specification syntax).

   SECMARK - {SAVE|RESTORE|context|?COMMENT comment}

       SAVE
           If an SELinux context is associated with the packet, the
           context is saved in the connection. Normally, the remaining
           columns should be left blank.

       RESTORE
           If an SELinux context is not currently associated with the
           packet, then the saved context (if any) is associated with the
           packet. Normally, the remaining columns should be left blank.

       context
           An SELinux context.

       ?COMMENT
           The remainder of the line is treated as a comment which is
           attached to subsequent rules until another ?COMMENT line is
           found or until the end of the file is reached. To stop adding
           comments to rules, use a line with only the word ?COMMENT.

   CHAIN - {P|I|F|O|T}[:{N|I|U|IU|NI|NU|NIU|NUI:E|ER}]
       This column determines the CHAIN where the SELinux context is to be
       applied:
           P - PREROUTING
           I - INPUT
           F - FORWARD
           O - OUTPUT
           T - POSTROUTING
       It may be optionally followed by a colon and an indication of the
       Netfilter connection state(s) at which the context is to be
       applied:
           :N - NEW connection
           :I - INVALID connection
           :NI - NEW or INVALID connection
           :E - ESTABLISHED connection
           :ER - ESTABLISHED or RELATED connection
       Beginning with Shorewall 4.5.10, the following additional options
       are available
           :U - UNTRACKED connection
           :IU - INVALID or UNTRACKED connection
           :NU - NEW or UNTRACKED connection
           :NIU - NEW, INVALID or UNTRACKED connection.
       This column was formerly labelled CHAIN:STATE.

   SOURCE -
   {-interface|[interface:]address-or-range[,address-or-range]...}[exclusion]
       May be:

        1. An interface name - matches traffic entering the firewall on
           the specified interface. May not be used in classify rules or
           in rules using the T in the CHAIN column.

        2. A comma-separated list of host or network IP addresses or MAC
           addresses.

        3. An interface name followed by a colon (":") followed by a
           comma-separated list of host or network IP addresses or MAC
           addresses.

       MAC addresses must be prefixed with "~" and use "-" as a separator.

       Example: ~00-A0-C9-15-39-78

       You may exclude certain hosts from the set already defined through
       use of an exclusion (see shorewall-exclusion[2](5)).

       Addresses may be specified using an ipset name preceded by '+'.

   DEST -
   {-|{interface|[interface:]address-or-range[,address-or-range]...}[exclusion]
       May be:

        1. An interface name. May not be used in the PREROUTING or INPUT
           chains. The interface name may be optionally followed by a
           colon (":") and an IP address list.

        2. A comma-separated list of host or network IP addresses. The
           list may include ip address ranges if your kernel and iptables
           include iprange support.

       You may exclude certain hosts from the set already defined through
       use of an exclusion (see shorewall-exclusion[2](5)).

       Addresses may be specified using an ipset name preceded by '+'.

   PROTO -
   {-|tcp:syn|ipp2p|ipp2p:udp|ipp2p:all|protocol-number|protocol-name|all}[,...]
       Protocol - ipp2p requires ipp2p match support in your kernel and
       iptables.

       Beginning with Shorewall 4.5.12, this column can accept a
       comma-separated list of protocols.

   DPORT - [-|port-name-number-or-range[,port-name-number-or-range]...]
       Optional destination Ports. A comma-separated list of Port names
       (from services(5)), port numbers or port ranges; if the protocol is
       icmp, this column is interpreted as the destination icmp-type(s).
       ICMP types may be specified as a numeric type, a numeric type and
       code separated by a slash (e.g., 3/4), or a typename. See
       http://www.shorewall.net/configuration_file_basics.htm#ICMP[3].

       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.

       This column is ignored if PROTOCOL = all but must be entered if any
       of the following field is supplied. In that case, it is suggested
       that this field contain "-"

       This column was formerly labelled DEST PORT(S).

   SPORT - [-|port-name-number-or-range[,port-name-number-or-range]...]
       Optional source port(s). If omitted, any source port is acceptable.
       Specified as a comma-separated list of port names, port numbers or
       port ranges.

       This column was formerly labelled SOURCE PORT(S).

   USER - [!][user-name-or-number][:group-name-or-number]
       This optional column may only be non-empty if the SOURCE is the
       firewall itself.

       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

   MARK - [!]value[/mask][:C]
       Defines a test on the existing packet or connection mark. The rule
       will match only if the test returns true.

       If you don't want to define a test but need to specify anything in
       the following columns, place a "-" in this field.

       !
           Inverts the test (not equal)

       value
           Value of the packet or connection mark.

       mask
           A mask to be applied to the mark before testing.

       :C
           Designates a connection mark. If omitted, the packet mark's
           value is tested.

EXAMPLE

   Mark the first incoming packet of a connection on the loopback
   interface and destined for address 127.0.0.1 and tcp port 3306 with
   context system_u:object_r:mysqld_t:s0 and save that context in the
   conntrack table. On subsequent input packets in the connection, set the
   context from the conntrack table.

   /etc/shorewall/interfaces:

       #ZONE      INTERFACE      BROADCAST       OPTIONS
       -          lo             -               ignore

   /etc/shorewall/secmarks:

       #SECMARK                              CHAIN      SOURCE  DEST       PROTO   DPORT      SPORT       USER      MARK
       system_u:object_r:mysqld_packet_t:s0  I:N        lo      127.0.0.1  tcp     3306
       SAVE                                  I:N        lo      127.0.0.1  tcp     3306
       RESTORE                               I:ER

FILES

   /etc/shorewall/secmarks

SEE ALSO

   http://james-morris.livejournal.com/11010.html

   http://www.shorewall.net/configuration_file_basics.htm#Pairs[4]

   shorewall(8), shorewall-accounting(5), shorewall-actions(5),
   shorewall-blacklist(5), shorewall-hosts(5), shorewall_interfaces(5),
   shorewall-ipsets(5), shorewall-maclist(5), shorewall-masq(5),
   shorewall-nat(5), shorewall-netmap(5), shorewall-params(5),
   shorewall-policy(5), shorewall-providers(5), shorewall-proxyarp(5),
   shorewall-rtrules(5), shorewall-routestopped(5), shorewall-rules(5),
   shorewall.conf(5), shorewall-tcclasses(5), shorewall-tcdevices(5),
   shorewall-mangle(5), shorewall-tos(5), shorewall-tunnels(5),
   shorewall-zones(5)

NOTES

    1. shorewall-rules
       http://www.shorewall.net/manpages/shorewall-rules.html

    2. shorewall-exclusion
       http://www.shorewall.net/manpages/shorewall-exclusion.html

    3. http://www.shorewall.net/configuration_file_basics.htm#ICMP
       http://www.shorewall.net/configuration_file_basics.htm#ICMP

    4. http://www.shorewall.net/configuration_file_basics.htm#Pairs
       http://www.shorewall.net/configuration_file_basics.htm#Pairs



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