This thread is insane. Why would you ever want to block telnet access to port 25. SMTP is a text based protocol thats a fact of life. Why don't you just bolt down your mailserver and be done with it.
At 01:32 AM 4/24/2002 -0400, [EMAIL PROTECTED] wrote: >could you fingerprint the source port? > >-C > >=-=-=-=-=-=-=-=-=-=-=-=-= | 0100111001101111011100110110010101111001 >Christopher Regenye | >System Services | I know you believe you understand what you >PR Newswire | think I said, but I am not sure you realize that >christopher_regenye | what you heard is not what I meant. > @prnewswire.com | >=-=-=-=-=-=-=-=-=-=-=-=-= | 0111010000100000010110010110111101110101 > > > > > >|--------+----------------------------> >| | Clifford Thurber | >| | <cthurber@edisonsc| >| | hools.com> | >| | | >| | 04/10/02 10:56 AM | >| | | >|--------+----------------------------> > > >------------------------------------------------------------------------------| > | > | > | To: "Binaya D. Joshi" <[EMAIL PROTECTED]>, Chris > Lee | > | <[EMAIL PROTECTED]> > | > | cc: [EMAIL PROTECTED], (bcc: Christopher Regenye/PR > Newswire)| > | Subject: Re: blocking telnet to port > 25 | > > >------------------------------------------------------------------------------| > > > > > >You can't block telnet to port 25 you can either block port 25 or port 23 >but thats it. SMTP is a mail protocol it does not care how the connection >to the IP/port pair was established as long as it follows the SMTP >protocol(i.e issues Helo, Mail From: Rcpt To: etc.) > > >At 04:14 PM 4/10/2002 +0545, Binaya D. Joshi wrote: > >blocking telnet to port 25 in mail server... huh ??? > > > > if so; may be this be the last mail u r be receiving :) > > > > > > > >B.D.Joshi > > > > > >On Wed, 10 Apr 2002, Chris Lee wrote: > > > > > If you want mail to through, you can't. > > > > > > Chris > > > > > > Sayed Peerzade wrote: > > > > > > > Hello, > > > > > > > > I'm systems engineer in an ISP handling mail servers, i also handle > > > > checkpoint. > > > > pls tell me how to block telnet to port 25, keeping normal telnet to > > > > perform normally on mail server (netscape messaging server running on > > > > solaris OS)) > > > > u can tell me method to block either in checkpoint or on mail server > > > > itself. > > > > Thanks and regards. > > > > > > > > Sayed K.Peerzade. > > > > > > > > _______________________________________________ > > > > Firewalls mailing list > > > > [EMAIL PROTECTED] > > > > http://lists.gnac.net/mailman/listinfo/firewalls > > > > > > _______________________________________________ > > > Firewalls mailing list > > > [EMAIL PROTECTED] > > > http://lists.gnac.net/mailman/listinfo/firewalls > > > > > > >_______________________________________________ > >Firewalls mailing list > >[EMAIL PROTECTED] > >http://lists.gnac.net/mailman/listinfo/firewalls > >_______________________________________________ >Firewalls mailing list >[EMAIL PROTECTED] >For Account Management (unsubscribe, get/change password, etc) Please go to: >http://lists.gnac.net/mailman/listinfo/firewalls _______________________________________________ Firewalls mailing list [EMAIL PROTECTED] For Account Management (unsubscribe, get/change password, etc) Please go to: http://lists.gnac.net/mailman/listinfo/firewalls
