nanog mailing list archives
Re: SYN floods continue
From: alex () relcom eu net
Date: Thu, 12 Sep 96 10:44:05 +0400
> That prohibits IP src spoofing (and asymmetrical paths). > ... > In most networks asymmetrical routing is an indication of a bug in > an IGP configuration, so early detection of the configuration problems > would be an additional benefit. In my Internet end-to-end routing study I found that fully 50% of the pairs of paths through the Internet had a major asymmetry at the end of 1995. "Major" meaning: visited at least one different city in the two directions. (30% visited at least one different AS.) This was a significant increase over the same figure for the end of 1994, 30%. So it may be quite hard to make and keep Internet routing symmetric.
But anyway, it's very important to restrict outgoing traffic of the usial customers by their own SRC addresses. It's difficult to stop rocket when it's flying in the cosmic space, but it's easy to destroy in on the starting part of it's trace. (Remember about _strategin defence iniciative_ /I do not know it's name in english/ -:)). And this coud be realised by router's vendor easily. --- Aleksei Roudnev, Network Operations Center, Relcom, Moscow (+7 095) 194-19-95 (Network Operations Center Hot Line),(+7 095) 239-10-10, N 13729 (pager) (+7 095) 196-72-12 (Support), (+7 095) 194-33-28 (Fax) - - - - - - - - - - - - - - - - -
Current thread:
- Re: SYN floods continue, (continued)
- Re: SYN floods continue Larry J. Plato (Sep 11)
- Re: SYN floods continue Michael Dillon (Sep 11)
- Re: SYN floods continueg Avi Freedman (Sep 11)
- Re: SYN floods continue Steven L. Johnson (Sep 11)
- Re: SYN floods continueh Avi Freedman (Sep 12)
- Re: SYN floods continue Sean Donelan (Sep 11)
- Re[2]: SYN floods continue Pat Calhoun (Sep 11)
- Re: SYN floods continue Vadim Antonov (Sep 11)
- Re: SYN floods continue Justin W. Newton (Sep 11)
- Re: SYN floods continue Vern Paxson (Sep 11)
- Re: SYN floods continue alex (Sep 11)
- Re: SYN floods continue Vadim Antonov (Sep 11)
- Re: SYN floods continue Jim Forster (Sep 13)
- Re: SYN floods continue Perry E. Metzger (Sep 13)
- Re: SYN floods continue Jim Forster (Sep 13)