topic PIX pass-through issue in Network Security https://community.cisco.com/t5/network-security/pix-pass-through-issue/m-p/454064#M534539 <P>Hi All,</P><P>I have an access-list applied to the interface outside of my PIX 515 firewall, I permit just the tcp port 443.</P><P>If I do a portscan I found ports TCP 25, 110 also opened and some UDP ports.</P><P>If I do telnet on the tcp ports I can connect even if I have not services behind that ports. How this could happen?</P><P>Thanks</P> Fri, 21 Feb 2020 08:18:50 GMT andreademarchi 2020-02-21T08:18:50Z PIX pass-through issue https://community.cisco.com/t5/network-security/pix-pass-through-issue/m-p/454064#M534539 <P>Hi All,</P><P>I have an access-list applied to the interface outside of my PIX 515 firewall, I permit just the tcp port 443.</P><P>If I do a portscan I found ports TCP 25, 110 also opened and some UDP ports.</P><P>If I do telnet on the tcp ports I can connect even if I have not services behind that ports. How this could happen?</P><P>Thanks</P> Fri, 21 Feb 2020 08:18:50 GMT https://community.cisco.com/t5/network-security/pix-pass-through-issue/m-p/454064#M534539 andreademarchi 2020-02-21T08:18:50Z Re: PIX pass-through issue https://community.cisco.com/t5/network-security/pix-pass-through-issue/m-p/454065#M534540 <HTML><HEAD></HEAD><BODY><P>I thing when you have fixup entry for those protocol portscanners shows like open ports, you will not be able to pass through.....</P><P>and mintime make sure there is no access-list or conduit mixed.</P><P></P><P>Thanks &amp; Regards</P><P></P><P>Shijas</P><P></P></BODY></HTML> Fri, 05 Aug 2005 14:16:02 GMT https://community.cisco.com/t5/network-security/pix-pass-through-issue/m-p/454065#M534540 shijasm 2005-08-05T14:16:02Z