North American Network Operators Group

Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

Re: SMTP spoofing ?

  • From: Owen DeLong
  • Date: Fri Feb 20 13:35:29 1998

I believe some trickery with the NAT features in the AS5200 from Cisco
might be a possibility.


> Are there any routers currently available that can do port 25 spoofing for
> dialup users?  That is, when the user attempts to connect to port 25
> anywhere, he in fact connects to port 25 on your own SMTP server instead. 
> In case it's not obvious, it's for spam management.
> Regards,
> John Levine, [email protected], Primary Perpetrator of "The Internet for Dummies",
> Information Superhighwayman wanna-be,, Sewer Commissioner
> Finger for PGP key, f'print = 3A 5B D0 3F D9 A0 6A A4  2D AC 1E 9E A6 36 A3 47