Penetration Testing mailing list archives
Some unusual network features
From: Paul Johnston <paul () westpoint ltd uk>
Date: Tue, 13 Jan 2004 09:46:08 +0000
Hi,I've come accross the following anomoloies while auditing a network, can anyone help explain what they are:
1) Ports that "hang open" i.e. you can connect, send data ok, but the other end never sends any data and never closes the connection. 2) HTTP ports that function normally when you issue some methods, but on other methods (including the imaginary method "SILLY") cause the connection to "hang open" like in (1). 3) Ports where the TTL is different on the SYN reply to the rest of the connection. ipid's also imply that different hosts are handling the SYN and the rest of the connection.
I've got some theories, but I'm not sure how much I'm jumping to conclusions.
Paul -- Paul Johnston Internet Security Specialist Westpoint Limited Albion Wharf, 19 Albion Street, Manchester, M1 5LN England Tel: +44 (0)161 237 1028 Fax: +44 (0)161 237 1031 email: paul () westpoint ltd uk web: www.westpoint.ltd.uk --------------------------------------------------------------------------- ----------------------------------------------------------------------------
Current thread:
- Some unusual network features Paul Johnston (Jan 13)
- Re: Some unusual network features Nathan R. Valentine (Jan 13)
- Re: Some unusual network features Andrew Simmons (Jan 13)
- Re: Some unusual network features Mike Hoskins (Jan 13)
- Re: Some unusual network features Shashank Rai (Jan 14)
- Re: Some unusual network features Alla Bezroutchko (Jan 14)
- Re: Some unusual network features die tuere (Jan 15)
- Re: Some unusual network features Daniel Lucq (Jan 15)
- <Possible follow-ups>
- RE: Some unusual network features Deckard, Jason (Jan 14)