{"id":593,"date":"2020-11-12T18:49:13","date_gmt":"2020-11-12T18:49:13","guid":{"rendered":"https:\/\/dft.wiki\/?p=593"},"modified":"2021-03-14T18:31:19","modified_gmt":"2021-03-14T18:31:19","slug":"point-to-point-gre-vpn-tunnel-with-cisco-devices","status":"publish","type":"post","link":"https:\/\/dft.wiki\/?p=593","title":{"rendered":"Point-to-Point GRE VPN Tunnel on Cisco Devices"},"content":{"rendered":"<p>GRE VPN is not a good VPN Tunneling technology and this is just a reference guide for information because does not offer much protection.<\/p>\n<p>Near end:<\/p>\n<pre>interface tunnel 0\r\nip address 172.16.12.1 255.255.255.252\r\ntunnel source g0\/0\r\ntunnel destination 10.2.2.1<\/pre>\n<p>Far end:<\/p>\n<pre>interface tunnel 0\r\nip address 172.16.12.2 255.255.255.252\r\ntunnel source 10.2.2.1\r\ntunnel destination 10.1.1.1<\/pre>\n<p>Useful commands for using it with IPv6 or mixed networks:<\/p>\n<pre>ipv6 unicast-routing (enables IPv6 routing)\r\ndo show ipv6 route (show the IPv6 routing table)\r\nipv6 address 2001:DB8:1:1::1\/126 (set IPv6 to an interface)\r\ntunnel mode gre ipv6 (defines GRE IPv6 for the interface)\r\ntunnel mode ipv6ip (defines GRE IPv6 over IPv4 for the interface)<\/pre>\n<p>Also, see the RIPng (IPv6) post for additional information [<a href=\"https:\/\/dft.wiki\/?p=616\">Read It<\/a>].<\/p>\n<p><strong>Read Also<\/strong><\/p>\n<p>Performance OpenVPN vs WireGuard [<a href=\"https:\/\/dft.wiki\/?p=1378\">Link<\/a>]<\/p>\n<p>Setting Up WireGuard VPN [<a href=\"https:\/\/dft.wiki\/?p=1380\">Link<\/a>]<\/p>\n<p>OpenVPN Server + Monitoring [<a href=\"https:\/\/dft.wiki\/?p=348\">Link<\/a>]<\/p>\n<p>pfSense with OpenVPN Client [<a href=\"https:\/\/dft.wiki\/?p=1135\">Link<\/a>]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>GRE VPN is not a good VPN Tunneling technology and this is just a reference [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-593","post","type-post","status-publish","format-standard","hentry","category-ccna"],"_links":{"self":[{"href":"https:\/\/dft.wiki\/index.php?rest_route=\/wp\/v2\/posts\/593","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dft.wiki\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dft.wiki\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dft.wiki\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dft.wiki\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=593"}],"version-history":[{"count":8,"href":"https:\/\/dft.wiki\/index.php?rest_route=\/wp\/v2\/posts\/593\/revisions"}],"predecessor-version":[{"id":1421,"href":"https:\/\/dft.wiki\/index.php?rest_route=\/wp\/v2\/posts\/593\/revisions\/1421"}],"wp:attachment":[{"href":"https:\/\/dft.wiki\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=593"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dft.wiki\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=593"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dft.wiki\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=593"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}