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shorewall-tcinterfaces(5)

NAME

   tcinterfaces - Shorewall file

SYNOPSIS

   /etc/shorewall/tcinterfaces

DESCRIPTION

   This file lists the interfaces that are subject to simple traffic
   shaping. Simple traffic shaping is enabled by setting TC_ENABLED=Simple
   in shorewall.conf[1](5).

   A note on the bandwidth definition used in this file:

   *   don't use a space between the integer value and the unit: 30kbit is
       valid while 30 kbit is not.

   *   you can use one of the following units:

       kbps
           Kilobytes per second.

       mbps
           Megabytes per second.

       kbit
           Kilobits per second.

       mbit
           Megabits per second.

       bps or number
           Bytes per second.

       k or kb
           Kilo bytes.

       m or mb
           Megabytes.

   *   Only whole integers are allowed.

   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).

   INTERFACE
       The logical name of an interface. If you run both IPv4 and IPv6
       Shorewall firewalls, a given interface should only be listed in one
       of the two configurations.

   TYPE - [external|internal]
       Optional. If given specifies whether the interface is external
       (facing toward the Internet) or internal (facing toward a local
       network) and enables SFQ flow classification.

   IN-BANDWIDTH (in_bandwidth) -
   {-|bandwidth[:burst]|~bandwidth[:interval:decay_interval]}
       The incoming bandwidth of that interface. Please note that you are
       not able to do traffic shaping on incoming traffic, as the traffic
       is already received before you could do so. But this allows you to
       define the maximum traffic allowed for this interface in total, if
       the rate is exceeded, the packets are dropped. You want this mainly
       if you have a DSL or Cable connection to avoid queuing at your
       providers side.

       If you don't want any traffic to be dropped, set this to a value to
       zero in which case Shorewall will not create an ingress qdisc.Must
       be set to zero if the REDIRECTED INTERFACES column is non-empty.

       The optional burst option was added in Shorewall 4.4.18. The
       default burst is 10kb. A larger burst can help make the bandwidth
       more accurate; often for fast lines, the enforced rate is well
       below the specified bandwidth.

       What is described above creates a rate/burst policing filter.
       Beginning with Shorewall 4.4.25, a rate-estimated policing filter
       may be configured instead. Rate-estimated filters should be used
       with Ethernet adapters that have Generic Receive Offload enabled by
       default. See Shorewall FAQ 97a[2].

       To create a rate-estimated filter, precede the bandwidth with a
       tilde ("~"). The optional interval and decay_interval determine how
       often the rate is estimated and how many samples are retained for
       estimating. Please see
       http://ace-host.stuart.id.au/russell/files/tc/doc/estimators.txt
       for details.

   OUT-BANDWIDTH (out_bandwidth) -
   [rate[:[burst][:[latency][:[peek][:[minburst]]]]]]
       Added in Shorewall 4.4.13. The terms are defined in tc-tbf(8).

       Shorewall provides defaults as follows:
           burst - 10kb
           latency - 200ms
       The remaining options are defaulted by tc(8).

FILES

   /etc/shorewall/tcinterfaces.

SEE ALSO

   http://ace-host.stuart.id.au/russell/files/tc/doc/sch_tbf.txt

   http://ace-host.stuart.id.au/russell/files/tc/doc/estimators.txt

   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-secmarks(5), shorewall-tcpri(5),
   shorewall-mangle(5), shorewall-tos(5), shorewall-tunnels(5),
   shorewall-zones(5)

NOTES

    1. shorewall.conf
       http://www.shorewall.net/manpages/shorewall.conf.html

    2. Shorewall FAQ 97a
       http://www.shorewall.net/FAQ.htm#faq97a



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