On Feb 18, 2010, at 12:10 AM, Masataka Ohta wrote: > For you, your ISP is, representing the Internet, responsible for the proper delivery. Your point? You are aware, of course, that some ISPs are actively engaging in DNS response modification, right? > To your surprise, reasonable security by network operators is > not so new. Highly commercial telcos have been offering it for > about 100 years. Ignoring for a second that the Internet isn't the telephony system (intelligence in the network is in different places), there have been MITM attacks against the telephony system. > Cache poisoning is a problem of poor implementations to handle > additional information including glue. No. Cache poisoning is ALSO a result of the fact that the path between source and destination is not protected. Regards, -drc _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf