Network traffic monitoring: BSD monitor & verifying encryption
m.seaman at infracaninophile.co.uk
Wed Jul 8 18:09:14 UTC 2009
Daniel Underwood wrote:
> Thanks for the help.
> I couldn't find any flags/fields in TCP packets indicated whether
> encrypted (as in the case of SSH packets). There isn't any, right?
Correct: there isn't anything like that in the TCP headers. Encryption
on TCP streams is an application level thing that only affects packet
There are transport layer encryption protocols -- eg. IPSec, OpenVPN, etc.
-- but those allow tunnelling TCP streams through them and aren't necessarily
Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
Kent, CT11 9PW
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