topic VPN Ports in Network Security https://community.cisco.com/t5/network-security/vpn-ports/m-p/1338903#M858677 <P>Does anyone know the ports which need to be open for a "ipsec-isakmp" vpn tunnel?</P> Mon, 11 Mar 2019 15:54:53 GMT HMidkiff 2019-03-11T15:54:53Z VPN Ports https://community.cisco.com/t5/network-security/vpn-ports/m-p/1338903#M858677 <P>Does anyone know the ports which need to be open for a "ipsec-isakmp" vpn tunnel?</P> Mon, 11 Mar 2019 15:54:53 GMT https://community.cisco.com/t5/network-security/vpn-ports/m-p/1338903#M858677 HMidkiff 2019-03-11T15:54:53Z Re: VPN Ports https://community.cisco.com/t5/network-security/vpn-ports/m-p/1338904#M858678 <HTML><HEAD></HEAD><BODY><P>udp 500 for phase 1</P><P>eg: access-list ACL_NAME permit udp any host x.x.x.x eq 500</P><P>protocol ESP for phase 2.</P><P>eg: access-list ACL_NAME permit esp any host x.x.x.x</P><P></P><P>if nat-t is used, udp/tcp 10000 depending on your configuration. or whatever other port you configure for this.</P></BODY></HTML> Tue, 14 Jul 2009 17:01:08 GMT https://community.cisco.com/t5/network-security/vpn-ports/m-p/1338904#M858678 srue 2009-07-14T17:01:08Z Re: VPN Ports https://community.cisco.com/t5/network-security/vpn-ports/m-p/1338905#M858679 <HTML><HEAD></HEAD><BODY><P>Harrison</P><P></P><P>UDP 500 - ISAKMP</P><P>ESP 50 - IPSEC</P><P></P><P>Optionally - </P><P></P><P>ISAKMP NAT-Traversal - UDP 4500 (NAT-T)</P><P>IPSEC Over UDP - UDP 10000 (Default)</P><P>IPSEC Over TCP - TCP 10000 (Default)</P><P></P><P>Jon</P></BODY></HTML> Tue, 14 Jul 2009 17:02:13 GMT https://community.cisco.com/t5/network-security/vpn-ports/m-p/1338905#M858679 Jon Marshall 2009-07-14T17:02:13Z Re: VPN Ports https://community.cisco.com/t5/network-security/vpn-ports/m-p/1338906#M858680 <HTML><HEAD></HEAD><BODY><P>eek..i can never rememeber 4500 for some reason.</P></BODY></HTML> Tue, 14 Jul 2009 17:22:04 GMT https://community.cisco.com/t5/network-security/vpn-ports/m-p/1338906#M858680 srue 2009-07-14T17:22:04Z