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        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 firehol-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 belonging 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 chosen 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 interface.

        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

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