topic transparent bridging over VPN in Network Security https://community.cisco.com/t5/network-security/transparent-bridging-over-vpn/m-p/567258#M1054968 <P>I have a need to establish a secure tunnel between two sites by using two routers, or two PIX525 firewalls, or two VPN3030 concentrators; the equipment is not an issue. This connection should be functioning as a transparent bridge, so layer 2 traffic. I guess, it is like LAN-to-LAN model. However, I haven's seen any good articles and configuration examples for it. Can someone help, please. </P><P>Thank you.</P><P>Jovan Jeremic</P> Fri, 21 Feb 2020 09:03:02 GMT JJeremic 2020-02-21T09:03:02Z transparent bridging over VPN https://community.cisco.com/t5/network-security/transparent-bridging-over-vpn/m-p/567258#M1054968 <P>I have a need to establish a secure tunnel between two sites by using two routers, or two PIX525 firewalls, or two VPN3030 concentrators; the equipment is not an issue. This connection should be functioning as a transparent bridge, so layer 2 traffic. I guess, it is like LAN-to-LAN model. However, I haven's seen any good articles and configuration examples for it. Can someone help, please. </P><P>Thank you.</P><P>Jovan Jeremic</P> Fri, 21 Feb 2020 09:03:02 GMT https://community.cisco.com/t5/network-security/transparent-bridging-over-vpn/m-p/567258#M1054968 JJeremic 2020-02-21T09:03:02Z Re: transparent bridging over VPN https://community.cisco.com/t5/network-security/transparent-bridging-over-vpn/m-p/567259#M1054969 <HTML><HEAD></HEAD><BODY><P>Ok what you can do is simple, create a gre over ipsec between the two sites. Configure irb on the router and bridge all the traffic from the LAN to the GRE tunnel. </P><P></P><P>Watch out, the router may give a warning saying that the bridging over gre is supported but it will still accept the command. It works without any issue.</P></BODY></HTML> Wed, 19 Jul 2006 11:33:49 GMT https://community.cisco.com/t5/network-security/transparent-bridging-over-vpn/m-p/567259#M1054969 attrgautam 2006-07-19T11:33:49Z