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OK I found it, with Google's help...

Apparently I need to add 'vlan and ...' to my filter expression when VLANs are used. Without filter expression, tcpdump and libpcap just output everything,...

As above,

tcp port 80
tcp port http

Or simply
port 80
or
port 22
Etc

---------- Post updated at 12:30 PM ---------- Previous update was at 12:53 AM ----------

Just...

Hello, I am a bit puzzled. I am trying to capture data using tcpdump on a bonded interface, which works fine until I add a filter, then nothing is seen nor captured by libpcap/tcpump.

I have...

OK many thanks for your help. Cheers.

---------- Post updated 04-03-10 at 07:53 AM ---------- Previous update was 03-03-10 at 04:44 PM ----------

Does anyone else have any idea why Linux throws...

Thanks, drl, so the eval statements would help me control exceptions better. Will give that a try.

Any ideas on why the 'Illegal seek' is returned on Linux and not on Solaris?

How can I find...

Hello all,

I have created a Perl script that tries to open connections to various systems on different ports in order to see if the machines are reachable, the ports are open, etc.

There...