|
North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical RE: Advisory - tunneling of IP at exchange points.
Thanks Paul, wonderful job. Side-note (taken from the exploit write-up http://www.linx.net/tunnel-advisory.txt): >// Adding "log-input" to the end of each access-list line will log >// the hardware address of the sender for good measure. IOS 11.1 >// and upwards only (from memory) We find log-input to very unreliable and often producing wrong information. It indeed operates differently across the 11.1 train (no comment on 11.2 offered) I think 11.1.15 breaks it badly. Albeit improperly worded and not well defined in print on CCO, please reference cisco BUGid CSCdj40503 prior to trusting log-input for any valid info. Best regards, David Van Allen - FASTNET(tm) / You Tools Corporation [email protected] (888)321-FAST(3278) http://www.fast.net FASTNET - Business and Personal Internet Solutions > -----Original Message----- > From: Paul Thornton [SMTP:[email protected]] > Sent: Tuesday, November 25, 1997 9:47 AM > To: [email protected] > Cc: [email protected]; [email protected]; [email protected]; > [email protected]; [email protected] > Subject: Advisory - tunneling of IP at exchange points. > > -- PLEASE NOTE: If you are replying to this, consider pruning the list > -- of cc's rather than crossposting replies wildly! > Thanks. > [snip] > The LINX and several of its members have recently had to take action > against an ISP that was using GRE tunneling between exchange points > to appropriate the capacity of other ISPs. > > Keith Mitchell > > Chairman > London InterNet Exchange [email protected] > Geneva House, 3 Park Road > Peterborough PE1 2UX > United Kingdom > Phone: +44 1733 705000 (fax 353929) > > > Paul > > -- > Paul Thornton, Network Engineer, London Internet Exchange Ltd. > Tel: 07000 783797 Mobile: +44 467 372205
|