1SHOREWALL-TCINTERFA(5)        Configuration Files       SHOREWALL-TCINTERFA(5)
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NAME

6       tcinterfaces - Shorewall file
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SYNOPSIS

9       /etc/shorewall[6]/tcinterfaces
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DESCRIPTION

12       This file lists the interfaces that are subject to simple traffic
13       shaping. Simple traffic shaping is enabled by setting TC_ENABLED=Simple
14       in shorewall.conf[1](5).
15
16       A note on the bandwidth definition used in this file:
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18       ·   don't use a space between the integer value and the unit: 30kbit is
19           valid while 30 kbit is not.
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21       ·   you can use one of the following units:
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23           kbps
24               Kilobytes per second.
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26           mbps
27               Megabytes per second.
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29           kbit
30               Kilobits per second.
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32           mbit
33               Megabits per second.
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35           bps or number
36               Bytes per second.
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38           k or kb
39               Kilo bytes.
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41           m or mb
42               Megabytes.
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44       ·   Only whole integers are allowed.
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46       The columns in the file are as follows (where the column name is
47       followed by a different name in parentheses, the different name is used
48       in the alternate specification syntax).
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50       INTERFACE
51           The logical name of an interface. If you run both IPv4 and IPv6
52           Shorewall firewalls, a given interface should only be listed in one
53           of the two configurations.
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55       TYPE - [external|internal]
56           Optional. If given specifies whether the interface is external
57           (facing toward the Internet) or internal (facing toward a local
58           network) and enables SFQ flow classification.
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60       IN-BANDWIDTH (in_bandwidth) -
61       {-|bandwidth[:burst]|~bandwidth[:interval:decay_interval]}
62           The incoming bandwidth of that interface. Please note that you are
63           not able to do traffic shaping on incoming traffic, as the traffic
64           is already received before you could do so. But this allows you to
65           define the maximum traffic allowed for this interface in total, if
66           the rate is exceeded, the packets are dropped. You want this mainly
67           if you have a DSL or Cable connection to avoid queuing at your
68           providers side.
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70           If you don't want any traffic to be dropped, set this to a value to
71           zero in which case Shorewall will not create an ingress qdisc.Must
72           be set to zero if the REDIRECTED INTERFACES column is non-empty.
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74           The optional burst option was added in Shorewall 4.4.18. The
75           default burst is 10kb. A larger burst can help make the bandwidth
76           more accurate; often for fast lines, the enforced rate is well
77           below the specified bandwidth.
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79           What is described above creates a rate/burst policing filter.
80           Beginning with Shorewall 4.4.25, a rate-estimated policing filter
81           may be configured instead. Rate-estimated filters should be used
82           with Ethernet adapters that have Generic Receive Offload enabled by
83           default. See Shorewall FAQ 97a[2].
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85           To create a rate-estimated filter, precede the bandwidth with a
86           tilde ("~"). The optional interval and decay_interval determine how
87           often the rate is estimated and how many samples are retained for
88           estimating. Please see
89           http://ace-host.stuart.id.au/russell/files/tc/doc/estimators.txt
90           for details. If not specified, the default interval is 250ms and
91           the default decay_interval is 4sec.
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93       OUT-BANDWIDTH (out_bandwidth) -
94       [rate[:[burst][:[latency][:[peek][:[minburst]]]]]]
95           Added in Shorewall 4.4.13. The terms are defined in tc-tbf(8).
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97           Shorewall provides defaults as follows:
98               burst - 10kb
99               latency - 200ms
100           The remaining options are defaulted by tc(8).
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FILES

103       /etc/shorewall/tcinterfaces
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105       /etc/shorewall6/tcinterfaces
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SEE ALSO

108       http://ace-host.stuart.id.au/russell/files/tc/doc/sch_tbf.txt
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110       http://ace-host.stuart.id.au/russell/files/tc/doc/estimators.txt
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112       shorewall(8)
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NOTES

115        1. shorewall.conf
116           http://www.shorewall.net/manpages/shorewall.conf.html
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118        2. Shorewall FAQ 97a
119           http://www.shorewall.net/FAQ.htm#faq97a
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123Configuration Files               01/17/2019            SHOREWALL-TCINTERFA(5)
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