I'm behind a watchdog firebox, which has recently
blocked ssh out. I have it to where i can use port
21(the server forwards 21 to 22 that i am trying to
connect to), but somehow the watchdog firewall is also
blocking by protocol type?
the only way i can connect is if i choose raw protocol
in putty... and this is what i get
SSH-1.99-OpenSSH_3.5p1
test
Protocol mismatch.
and then close.
can i still use raw and somehow start using ssh after
this, or something? Or is there some way to identify
self as http protocol to the firewall?
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"Mr. Mailing List" wrote:> I'm behind a watchdog firebox, which has recently > blocked ssh out. I have it to where i can use port > 21(the server forwards 21 to 22 that i am trying to > connect to), but somehow the watchdog firewall is also > blocking by protocol type?Many state-based firewalls "peek" into the application layer in order to handle some protocols. FTP (port 21) is probably the best-known example of one where you must do this in order to correctly firewall (or NAT) it.> can i still use raw and somehow start using ssh after > this, or something? Or is there some way to identify > self as http protocol to the firewall?Use another port or talk to your firewall admin. -- Darren Tucker (dtucker at zip.com.au) GPG key 8FF4FA69 / D9A3 86E9 7EEE AF4B B2D4 37C9 C982 80C7 8FF4 FA69 Good judgement comes with experience. Unfortunately, the experience usually comes from bad judgement.