topic Re: VPN Client through Firewall in Network Security https://community.cisco.com/t5/network-security/vpn-client-through-firewall/m-p/812615#M1027174 <HTML><HEAD></HEAD><BODY><P>Hi, I'm using the pix 515e v6.3</P><P>Thinks.</P></BODY></HTML> Mon, 24 Nov 2008 19:44:36 GMT yvannpaillet 2008-11-24T19:44:36Z VPN Client through Firewall https://community.cisco.com/t5/network-security/vpn-client-through-firewall/m-p/812609#M1027164 <P>Hi, I am a real rookie to cisco, so please forgive me if I say anything silly. I wanted to know wich ports do I have to free, to make a VPN with a VPN CLient 4.7.00.0533. I tryed with 4500 UDP 62515 or 62514 UDP 10000 TCP, but nothing works. Could you help me please? Thank you very much.</P> Fri, 21 Feb 2020 09:40:19 GMT https://community.cisco.com/t5/network-security/vpn-client-through-firewall/m-p/812609#M1027164 atilio666 2020-02-21T09:40:19Z Re: VPN Client through Firewall https://community.cisco.com/t5/network-security/vpn-client-through-firewall/m-p/812610#M1027165 <HTML><HEAD></HEAD><BODY><P>esp protocol 50</P><P>udp 500</P><P>udp 4500</P><P></P><P>That should do the trick.</P><P></P></BODY></HTML> Thu, 06 Sep 2007 19:41:11 GMT https://community.cisco.com/t5/network-security/vpn-client-through-firewall/m-p/812610#M1027165 acomiskey 2007-09-06T19:41:11Z Re: VPN Client through Firewall https://community.cisco.com/t5/network-security/vpn-client-through-firewall/m-p/812611#M1027166 <HTML><HEAD></HEAD><BODY><P>I am sorry, but what do you mean by "esp Protocol 50"</P><P>Thanks</P></BODY></HTML> Thu, 06 Sep 2007 19:59:54 GMT https://community.cisco.com/t5/network-security/vpn-client-through-firewall/m-p/812611#M1027166 atilio666 2007-09-06T19:59:54Z Re: VPN Client through Firewall https://community.cisco.com/t5/network-security/vpn-client-through-firewall/m-p/812612#M1027168 <HTML><HEAD></HEAD><BODY><P>Networking is composed of layers; usually, this is the OSI model (see <A class="jive-link-custom" href="http://en.wikipedia.org/wiki/OSI_model" target="_blank">http://en.wikipedia.org/wiki/OSI_model</A> for details). IP is one of these layers, and can encapsulates data from the layer above. In the IP header, there is a marker identifying the type of data that is contained within the IP packet - this is just a number, such as 6 for TCP or 17 for UDP. Protocol 50 is one of these - it denotes encapsulating security payload, and is commonly used with VPN applications.</P><P></P><P>Protocol 50 differs from TCP port 50 in that TCP port 50 is specific to the TCP protocol in the transport layer (layer 4), whereas protocol 50 is specific to the IP protocol in the network layer (layer 3). ICMP is another example of a protocol number (it is number 1) - but ICMP does not use port numbers like protocols such as TCP and UDP do, i.e. not all IP protocols use port numbers.</P></BODY></HTML> Fri, 21 Nov 2008 22:03:57 GMT https://community.cisco.com/t5/network-security/vpn-client-through-firewall/m-p/812612#M1027168 snandigam 2008-11-21T22:03:57Z Re: VPN Client through Firewall https://community.cisco.com/t5/network-security/vpn-client-through-firewall/m-p/812613#M1027170 <HTML><HEAD></HEAD><BODY><P>Where should i write these commnands</P><P>esp protocol 50</P><P>udp 500</P><P>UDP 4500</P><P>thinks</P></BODY></HTML> Mon, 24 Nov 2008 08:00:42 GMT https://community.cisco.com/t5/network-security/vpn-client-through-firewall/m-p/812613#M1027170 yvannpaillet 2008-11-24T08:00:42Z Re: VPN Client through Firewall https://community.cisco.com/t5/network-security/vpn-client-through-firewall/m-p/812614#M1027172 <HTML><HEAD></HEAD><BODY><P>Which firewall device are you using?</P><P></P><P>Regards</P><P></P><P>Farrukh</P></BODY></HTML> Mon, 24 Nov 2008 13:28:51 GMT https://community.cisco.com/t5/network-security/vpn-client-through-firewall/m-p/812614#M1027172 Farrukh Haroon 2008-11-24T13:28:51Z Re: VPN Client through Firewall https://community.cisco.com/t5/network-security/vpn-client-through-firewall/m-p/812615#M1027174 <HTML><HEAD></HEAD><BODY><P>Hi, I'm using the pix 515e v6.3</P><P>Thinks.</P></BODY></HTML> Mon, 24 Nov 2008 19:44:36 GMT https://community.cisco.com/t5/network-security/vpn-client-through-firewall/m-p/812615#M1027174 yvannpaillet 2008-11-24T19:44:36Z