[EMAIL PROTECTED] writes:
> I have a tcpdump question. I am trying to pin down a network access
> problem, & used tcpdump to look at packets from my windoze machine.
> Yes, the app only runs on windoze. If I had the time, I'd see if the w95
> Netscape w/ windoze only plugins runs under wine, but for now....
>
> Anyway, the problem: when I say tcpdump host foo, it says
> Kernel filter, protocol ALL, datagram packet socket
> tcpdump: listening on all devices
> and only shows arp or netbios->dgm.
Showing us some of the exact output would be helpful here. Annotating
this with what you're actually doing at the time would be ideal.
Otherwise we're shooting in the dark here.
> When I say tcpdump port 80, it gives the same message, &
> shows local LAN port 80 activity. I used to use this all the time,
> & don't remember this behaviour.
It's hard to comment here since it isn't clear what you're referring to.
> Red Hat 6.1, mostly upgraded to 6.2
> kernel 2.2.12-20
> tcpdump-3.4-16
>
> Trying to check why Netscape can't get thru firewall /
> proxy to get to remote site. It sees everything except
> a site with port 21459.
Does your firewall block access to this port? How is it setup,
generally? Is the machine running your application behind this
firewall? A diagram...?
How about typing:
tcpdump 'port 80 || port 21459'
or even:
tcpdump 'ip host YOUR-HOSTNAME and ( port 80 || port 21459 )'
What does this produce and what did you do to produce it?
--kevin
--
Kevin D. Clark | |
[EMAIL PROTECTED] | [EMAIL PROTECTED] | Give me a decent UNIX
Enterasys Networks | PGP Key Available | and I can move the world
Durham, N.H. (USA) | |
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