Wireshark · Ethereal-users: Re: [Ethereal-users] Re: Capture Filter on port - strange behavior -ethereal users post

[James Garrison <jhg@xxxxxxxxxxxxxxx>]

No, this is all happening on an internal LAN. The client is
running Ethereal and the SMTP server is on the same subnet.
There's no ISP involved.  I think this is a PCap problem
since with no filters I see both sides of the conversation.
I've posted the question to the WinPCap-users list

Matthew Hinton wrote:
> You had said client.  I'm guessing their ISP isn't doing what their help
> desk calls "port 25 blocking"?    McAfee 8.0 has a "port blocking" feature
> that may be turned on by default actually.  If they are using other
> anti-virus softwares, I've seen like a virtual port (for lack of a better
> term) get created to send mail.
--
James Garrison                                Athens Group, Inc.
mailto:jhg@xxxxxxxxxxxxxxx                    5608 Parkcrest Dr
http://www.athensgroup.com                    Austin, TX 78731
PGP: RSA=0x92E90A3B DH/DSS=0x498D331C         (512) 345-0600 x150