New and interesting network abuse.

Tue Jan 11 07:42:40 UTC 2005

Thread that I just started yesterday about port 25 blocking and if
more ISPs werent doing this bidirectionally.

Which is what your local ISP, and other ISPs that have dialup pools, must do.

--srs

On Tue, 11 Jan 2005 01:33:00 -0600, Ejay Hire <ejay.hire at isdn.net> wrote:
> 
> My apologies if this strays off topic, but I wanted to share my recent
> experience.
> 
> We had a collocation customer come in and request a t1 of pots lines for
> their servers, then complaints that their "security" software wasn't
> working because of our RPF checks.  As it turns out they were dialing up
> to a local isp, and sending bulk email using our bandwidth, but the
> dial-up's ip.... And receiving the TCP ack on the dial up.