On Mon, 18 Jun 2007, Suresh Ramasubramanian wrote:
On 6/18/07, Jeroen Massar <[EMAIL PROTECTED]> wrote:
Of course, though 25 is (afaik ;) the most abused one that will annoy a
lot of other folks with spam, phishings and virus distribution, though
the latter seems to have come to a near halt from what I see.
Read these and weep, then -
http://darkwing.uoregon.edu/~joe/port25.pdf
http://darkwing.uoregon.edu/~joe/zombies.pdf
As Joe says (and I agree), trying to fix infected hosts on your
network by blocking port 25 is like treating lung cancer with cough
syrup.
The great thing about opinions is everyone has one.
See also
http://www.maawg.org/port25
Or how about
http://www.securitymanagement.com/library/Sans_Ulrich1203.pdf
http://www.networkworld.com/edge/news/2003/0908studyisps.html
The best answer is probably paying for a strong ISP abuse team. But for
whatever reasons, some ISPs prefer to invest in other areas.
