topic Re: Tunnel?? in Network Security https://community.cisco.com/t5/network-security/tunnel/m-p/1510885#M615729 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>Are you referring to creating a tunnel interface on a router?</P><P>The tunnel interface needs to be created for a GRE tunnel for example, it is not required for an IPsec VPN tunnel (since it uses the physical interface).</P><P></P><P>If this is not what you want please elaborate.</P><P></P><P>Federico.</P></BODY></HTML> Wed, 24 Nov 2010 19:22:25 GMT Federico Coto Fajardo 2010-11-24T19:22:25Z Tunnel?? https://community.cisco.com/t5/network-security/tunnel/m-p/1510884#M615725 <P>Hi,</P><P></P><P></P><P>I am studing the VPN; I want to know why I need to create the Tunnel in VPN? cos I have physcial interface on my ROuter or Firewall.?</P><P></P><P>Any Benift of that??</P> Mon, 11 Mar 2019 19:14:15 GMT https://community.cisco.com/t5/network-security/tunnel/m-p/1510884#M615725 abhi-adte 2019-03-11T19:14:15Z Re: Tunnel?? https://community.cisco.com/t5/network-security/tunnel/m-p/1510885#M615729 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>Are you referring to creating a tunnel interface on a router?</P><P>The tunnel interface needs to be created for a GRE tunnel for example, it is not required for an IPsec VPN tunnel (since it uses the physical interface).</P><P></P><P>If this is not what you want please elaborate.</P><P></P><P>Federico.</P></BODY></HTML> Wed, 24 Nov 2010 19:22:25 GMT https://community.cisco.com/t5/network-security/tunnel/m-p/1510885#M615729 Federico Coto Fajardo 2010-11-24T19:22:25Z Re: Tunnel?? https://community.cisco.com/t5/network-security/tunnel/m-p/1510886#M615734 <HTML><HEAD></HEAD><BODY><P>simply why we need to create the interface tunnel in VPN??</P><P>or Importance of interface tunnel?</P></BODY></HTML> Wed, 24 Nov 2010 19:41:33 GMT https://community.cisco.com/t5/network-security/tunnel/m-p/1510886#M615734 abhi-adte 2010-11-24T19:41:33Z Re: Tunnel?? https://community.cisco.com/t5/network-security/tunnel/m-p/1510887#M615737 <HTML><HEAD></HEAD><BODY><P>I guess you could think about it as a virtual interface to provide a simple interface for configuration. <BR />One of the most common VPNs that use tunnel inteface is GRE. <BR />It uses the tunnel interface to encapsulate the traffic in GRE packets with the tunnel <BR />source/tunnel destination commands creating either a point-to-point tunnel or multipoint if<BR />combined with DMVPN.</P><P></P><P>Federico.</P></BODY></HTML> Wed, 24 Nov 2010 19:48:27 GMT https://community.cisco.com/t5/network-security/tunnel/m-p/1510887#M615737 Federico Coto Fajardo 2010-11-24T19:48:27Z