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PIX - TCP SYN

mh1437
Level 1
Level 1

Scenario: a TCP connection is ALREADY established between an inside and outside host (3-way handshake completed). The Pix receives a packet for the inside host in this connection with TCP SYN set - what does the PIX do?

I would think it discards it but do to the recent security notices, it appears it may be passed through causing the session to reset.

Which is the case?

1 Reply 1

umedryk
Level 5
Level 5

If the session is already established, the PIX ignores the Syn set.

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