Messages in this thread | | | From | "Nivedita Singhvi" <> | Subject | Re: [DOC PATCH] Re: tcp_keepalive_intvl vs tcp_keepalive_time? | Date | Mon, 11 Feb 2002 12:51:43 -0800 |
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> What kind of packets are keepalive packets, by the > way? (I don't think the firewall rules are filtering > them out, but I can't be sure.)
> Rob again. :)
Thanks for correcting the documentation - it was out of date and erroneous.
The keepalive packets are simple tcp segments sent on the connection:
- no data - ack # is next expected byte - sequence # is a stale (byte already acked by the other end) one, so that the other end is forced to send an ack in return (as it receives an out of window sequence #).
I cant imagine how a firewall would be filtering them..
thanks, Nivedita
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