12 Jan
2006
12 Jan
'06
11:09 p.m.
In message <20060112.195851.1587.15308@webmail05.lax.untd.com>, "Fergie" writes :
RFC2827/BCP38?
The problem is that an ISP can do all the source filtering it wants, but if it only blocks SYNs to port 25 all it takes is one unfiltered dial-up to spoof that ISP's addresses. --Steven M. Bellovin, http://www.cs.columbia.edu/~smb