topic Re: how to use established command in pix in Network Security https://community.cisco.com/t5/network-security/how-to-use-established-command-in-pix/m-p/644996#M1036202 <HTML><HEAD></HEAD><BODY><P>Established is not really used in the PIX because the PIX is a Stateful Firewall.</P><P></P><P>This means that if a packet is allowed for example from the Internet to the DMZ Web Server then the returning traffic is allowed. You do not need to configure the returning traffic in the Access-List.</P><P></P><P>A stateful firewall keeps a session table of all connection.</P><P></P><P>The established command in ACL is used on routers which does not have a stateful connection table.</P><P></P><P>See also:</P><P><A class="jive-link-custom" href="http://en.wikipedia.org/wiki/Stateful_firewall" target="_blank">http://en.wikipedia.org/wiki/Stateful_firewall</A></P><P></P><P>sincerely</P><P>Patrick</P></BODY></HTML> Mon, 04 Dec 2006 02:44:02 GMT Patrick Iseli 2006-12-04T02:44:02Z how to use established command in pix https://community.cisco.com/t5/network-security/how-to-use-established-command-in-pix/m-p/644995#M1036200 <P>hi could anyone pls tell me how to use the established command in pix. i tried reading the documentation but really understand when to use it. can someone pls explain. </P><P></P><P>thanks in advance. </P><P></P><P>regards</P><P></P><P>sebastan</P> Mon, 11 Mar 2019 09:03:43 GMT https://community.cisco.com/t5/network-security/how-to-use-established-command-in-pix/m-p/644995#M1036200 sebastan_bach 2019-03-11T09:03:43Z Re: how to use established command in pix https://community.cisco.com/t5/network-security/how-to-use-established-command-in-pix/m-p/644996#M1036202 <HTML><HEAD></HEAD><BODY><P>Established is not really used in the PIX because the PIX is a Stateful Firewall.</P><P></P><P>This means that if a packet is allowed for example from the Internet to the DMZ Web Server then the returning traffic is allowed. You do not need to configure the returning traffic in the Access-List.</P><P></P><P>A stateful firewall keeps a session table of all connection.</P><P></P><P>The established command in ACL is used on routers which does not have a stateful connection table.</P><P></P><P>See also:</P><P><A class="jive-link-custom" href="http://en.wikipedia.org/wiki/Stateful_firewall" target="_blank">http://en.wikipedia.org/wiki/Stateful_firewall</A></P><P></P><P>sincerely</P><P>Patrick</P></BODY></HTML> Mon, 04 Dec 2006 02:44:02 GMT https://community.cisco.com/t5/network-security/how-to-use-established-command-in-pix/m-p/644996#M1036202 Patrick Iseli 2006-12-04T02:44:02Z Re: how to use established command in pix https://community.cisco.com/t5/network-security/how-to-use-established-command-in-pix/m-p/644997#M1036204 <HTML><HEAD></HEAD><BODY><P>hi patrick thanks. </P><P></P><P>regards</P><P></P><P>sebastan</P></BODY></HTML> Mon, 04 Dec 2006 06:15:40 GMT https://community.cisco.com/t5/network-security/how-to-use-established-command-in-pix/m-p/644997#M1036204 sebastan_bach 2006-12-04T06:15:40Z