topic Re: PIX - TCP SYN in Network Security https://community.cisco.com/t5/network-security/pix-tcp-syn/m-p/470049#M534319 <HTML><HEAD></HEAD><BODY><P>If the session is already established, the PIX ignores the Syn set.</P></BODY></HTML> Tue, 16 Aug 2005 17:47:57 GMT umedryk 2005-08-16T17:47:57Z PIX - TCP SYN https://community.cisco.com/t5/network-security/pix-tcp-syn/m-p/470048#M534312 <P>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?</P><P></P><P>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.</P><P></P><P>Which is the case?</P> Fri, 21 Feb 2020 08:19:30 GMT https://community.cisco.com/t5/network-security/pix-tcp-syn/m-p/470048#M534312 mh1437 2020-02-21T08:19:30Z Re: PIX - TCP SYN https://community.cisco.com/t5/network-security/pix-tcp-syn/m-p/470049#M534319 <HTML><HEAD></HEAD><BODY><P>If the session is already established, the PIX ignores the Syn set.</P></BODY></HTML> Tue, 16 Aug 2005 17:47:57 GMT https://community.cisco.com/t5/network-security/pix-tcp-syn/m-p/470049#M534319 umedryk 2005-08-16T17:47:57Z