{"id":217,"date":"2005-07-17T19:03:32","date_gmt":"2005-07-18T00:03:32","guid":{"rendered":"http:\/\/192.168.33.66\/wp\/?p=217"},"modified":"2005-07-17T19:03:32","modified_gmt":"2005-07-18T00:03:32","slug":"linux-firewall-multiple-pptp-connections","status":"publish","type":"post","link":"http:\/\/www.wildow.com\/blog\/?p=217","title":{"rendered":"linux firewall multiple pptp connections"},"content":{"rendered":"<p>behind the firewall.. does not work&#8230;<\/p>\n<p><a href=\"http:\/\/www.placid.tv\/pie.php?page=FrickinPPTP\">http:\/\/www.placid.tv\/pie.php?page=FrickinPPTP<\/a><\/p>\n<p>\nWhat does Frickin PPTP do?<\/p>\n<p>Frickin PPTP Proxy allows a Point-to-Point Tunneling Protocol (PPTP) client to connect to a PPTP server through Network Address Translation (NAT).<br \/>\nWhy do I need it?<\/p>\n<p><!--more--><\/p>\n<p>PPTP uses a TCP connection on port 1723, which is referred to as &#8220;control channel&#8221;, and a variant of generic routing encapsulation (GRE) for the actual PPP data.<\/p>\n<p>When using TCP connections you can easily tell two connections apart by looking at their port numbers, with GRE this is not possible since it has no ports.<br \/>\nThe PPTP server is able to multiplex between connections by looking at a call-id inside GRE packets. These call-id&#8217;s are communicated over the control channel before a GRE tunnel is created.<\/p>\n<p>When connecting through NAT all connections will originate from the IP of the NAT gateway and multiple PPTP connections are not possible without a proxy.<br \/>\nDownload<\/p>\n<p>The latest version of Frickin PPTP is avaiable on sourceforge.net.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>behind the firewall.. does not work&#8230; http:\/\/www.placid.tv\/pie.php?page=FrickinPPTP What does Frickin PPTP do? Frickin PPTP Proxy allows a Point-to-Point Tunneling Protocol (PPTP) client to connect to a PPTP server through Network Address Translation (NAT). Why do I need it?<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-217","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/www.wildow.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/217","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.wildow.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.wildow.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.wildow.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/www.wildow.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=217"}],"version-history":[{"count":0,"href":"http:\/\/www.wildow.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/217\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.wildow.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=217"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.wildow.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=217"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.wildow.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=217"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}