topic Re: PIX firewall in Network Security https://community.cisco.com/t5/network-security/pix-firewall/m-p/130036#M617384 <HTML><HEAD></HEAD><BODY><P>1. - ok, but only SMTP is supported (not ESMTP), so DSNs (Delivery Status</P><P>Notifications) do not work.</P><P></P><P>2. - ok, only the first DNS replay packet is accepted.</P><P></P><P>3. - ok, use 6.2</P><P></P><P>4. - ok, but not in every place. For example, Cut-thru proxy doesn't recognise</P><P>3128 as http.</P><P></P><P>Oleg Tipisov,</P><P>REDCENTER,</P><P>Moscow</P><P></P></BODY></HTML> Wed, 05 Feb 2003 16:49:42 GMT ovt 2003-02-05T16:49:42Z PIX firewall https://community.cisco.com/t5/network-security/pix-firewall/m-p/130035#M617370 <P>Dear All</P><P></P><P>It is my first time to use this connection, so i hope to find helpful guys.</P><P>Actually i need to how to perform or either if these points are supported or not.</P><P>1. Mail Guard: removes need for external mail relay server in perimeter network</P><P>2. DNS guard: transparently protects outbound name and address lookups</P><P>3. Net aliasing transparently merges overlapping networks with the same ip address space.</P><P>4. Ability to customize protocol port numbers</P> Fri, 21 Feb 2020 06:32:23 GMT https://community.cisco.com/t5/network-security/pix-firewall/m-p/130035#M617370 a.elsherif 2020-02-21T06:32:23Z Re: PIX firewall https://community.cisco.com/t5/network-security/pix-firewall/m-p/130036#M617384 <HTML><HEAD></HEAD><BODY><P>1. - ok, but only SMTP is supported (not ESMTP), so DSNs (Delivery Status</P><P>Notifications) do not work.</P><P></P><P>2. - ok, only the first DNS replay packet is accepted.</P><P></P><P>3. - ok, use 6.2</P><P></P><P>4. - ok, but not in every place. For example, Cut-thru proxy doesn't recognise</P><P>3128 as http.</P><P></P><P>Oleg Tipisov,</P><P>REDCENTER,</P><P>Moscow</P><P></P></BODY></HTML> Wed, 05 Feb 2003 16:49:42 GMT https://community.cisco.com/t5/network-security/pix-firewall/m-p/130036#M617384 ovt 2003-02-05T16:49:42Z