1

I am trying to limit inbound and outbound bandwidth to and from a specific host on CentOS. The reason is that this host consistently uses a large amount of bandwidth and this needs to be limited while other hosts needs to be able to connect freely without limitation.

Any ideas?

2

The match ip rule in tc is probably your best option. A quick example for outbound:

  tc qdisc add dev $DEV root handle 1: cbq avpkt 1000 bandwidth 10mbit 

  tc class add dev $DEV parent 1: classid 1:1 cbq rate 512kbit \
  allot 1500 prio 5 bounded isolated 

  tc filter add dev $DEV parent 1: protocol ip prio 16 u32 \
  match ip dst $DESTINATION_IP flowid 1:1

You can also do match ip src for inbound.

Source: http://lartc.org/howto/lartc.ratelimit.single.html

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