Limiting closed port RST

[Vlad GURDIGA]

Hello,

I've started an Apache bechmark with ab today and a lot of such
messages from kernel appeared in /var/log/messages:

Sep 25 16:16:34 dev01 kernel: Limiting closed port RST response from
270 to 200 packets/sec
Sep 25 16:19:10 dev01 kernel: Limiting closed port RST response from
475 to 200 packets/sec
Sep 25 16:19:15 dev01 kernel: Limiting closed port RST response from
220 to 200 packets/sec
Sep 25 16:19:19 dev01 kernel: Limiting closed port RST response from
243 to 200 packets/sec

What do they mean?