[Winpcap-users] Filter Problem
guy at alum.mit.edu
Sat Nov 26 22:24:43 GMT 2005
Deston High wrote:
> hmm... thats a problem. the program i write shouldn't run only on pc's
> which are use PPPOE. :(
> Any workaround?
1) Download the WinPcap source, update its BPF compiler to the version
in the current top-of-CVS-tree version of libpcap (which is not in any
libpcap release or WinPcap release), compile the new WinPcap and replace
wpcap.dll with the one you built, and then use
pppoes and tcp and port 60000
as the filter if you're interested only in traffic running over the
2) See if there's a PPP device on which you can capture, and try
capturing on that rather than on the Ethernet on which that PPP device
> Oh, i see 192.168.0.1 was indeed a bad example.. in the program it isn't
> a LAN IP, it's the internet IP.
> So lets say it's 220.127.116.11 and its is also the source IP. so it's
> FROM. ("src host 18.104.22.168") ;-)
> And, YES, i capture on ethernet.
"On Ethernet" doesn't indicate whether the traffic is
IP-directly-over-Ethernet or IP-over-PPP-over-Ethernet. Is the traffic
you're capturing with the "src host" filter running on
IP-directly-over-Ethernet or is it running on IP-over-PPP-over-Ethernet.
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