NAME

       firehol-tos - set the Type of Service (TOS) of packets

SYNOPSIS

       tos value chain [rule-params]

DESCRIPTION

       The tos helper command sets the Type of Service (TOS) field in packet headers.

              Note

              There  is also a tos parameter which allows matching TOS values within individual rules (see fire‐
              hol-params(5)).

       The value can be an integer number (decimal or hexadecimal) or one of the descriptive values accepted  by
       iptables(8) (run iptables -j TOS --help for a list).

       The chain will be used to find traffic to mark.  It can be any of the iptables(8) built in chains belong‐
       ing to the mangle table.  The chain names are: INPUT, FORWARD, OUTPUT, PREROUTING and POSTROUTING.  These
       names are case-sensitive.

       The rule-params define a set of rule parameters to match the traffic that is to be marked within the cho‐
       sen chain.  See firehol-params(5) for more details.

       Any  tos  commands will affect all traffic matched.  They must be declared before the first router or in‐
       terface.

EXAMPLES

               # set TOS to 16, packets sent by the local machine
               tos 16 OUTPUT

               # set TOS to 0x10 (16), packets routed by the local machine
               tos 0x10 FORWARD

               # set TOS to Maximize-Throughput (8), packets routed by the local
               #              machine, destined for port TCP/25 of 198.51.100.1
               tos Maximize-Throughput FORWARD proto tcp dport 25 dst 198.51.100.1

SEE ALSO

       • firehol(1) - FireHOL program

       • firehol.conf(5) - FireHOL configuration

       • firehol-params(5) - optional rule parameters

       • firehol-tosfix(5) - tosfix config helper

       • iptables(8) (http://ipset.netfilter.org/iptables.man.html) - administration tool for IPv4 firewalls

       • ip6tables(8) (http://ipset.netfilter.org/ip6tables.man.html) - administration tool for IPv6 firewalls

       • FireHOL Website (http://firehol.org/)

       • FireHOL Online PDF Manual (http://firehol.org/firehol-manual.pdf)

       • FireHOL Online Documentation (http://firehol.org/documentation/)

AUTHORS

       FireHOL Team.

FireHOL Reference                               Built 24 Jan 2024                                 firehol-tos(5)