And keep in mind that if you are tracing on a system with a NIC doing
ChecKsum Offload the outbound traffic from that system will probably not
have the checksum calculated yet since the NIC will be doing it...
rick jones
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-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Luis Del
Pino
Sent: Wednesday, March 15, 2006 2:42 PM
To: tcpdump-workers@lists.tcpdump.org
Subject: [tcpdump-workers] Checksum
When I capture an UDP datagram from a well-known source, Could the
checksum
Luis Del Pino wrote:
When I capture an UDP datagram from a well-known source, Could the checksum
be incorrect?
Yes, if the packet was corrupted. (I assume you're capturing with libpcap.)
do I have to calculate it?
If you want to check whether the packet was corrupted, yes. See
tcpdump's
sure - it could be that the data got corrupted by transit nodes;
Luis Del Pino wrote:
When I capture an UDP datagram from a well-known source, Could the checksum
be incorrect? do I have to calculate it? or How Could I ask other entity
about it?
Thanks
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This is the tcpdump-workers list.
Visit
When I capture an UDP datagram from a well-known source, Could the checksum
be incorrect? do I have to calculate it? or How Could I ask other entity
about it?
Thanks
-
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Visit https://lists.sandelman.ca/ to unsubscribe.
