[Discover] PPTP Client http://pptpclient.sourceforge.net/
(linux network opensource security) 
[Discover] OpenVPN - An Open Source SSL VPN Solution by James Yonan http://openvpn.net/ (network opensource software vpn)
[Discover] Hamachi : Stay Connected http://hamachi.cc/ (windows network software security)
[Discover] gentoo: OpenVPN http://gentoo-wiki.com/HOWTO_OpenVPN_primer (gentoo vpn howto openvpn)
[Discover] How to Install Openvpn | The Bakers Homepage http://www.thebakershome.net/?q=node/56 (ubuntu openvpn vpn tutorial)
[Discover] FreeS/WAN Project: Home Page http://www.freeswan.org/ (linux ipsec security network)
[Discover] Various Linux Tips http://mancill.com/freesoftware/linuxtips/index.html (linux pptp redes networking)
[Discover] Julio Guillermo Paredes Cornejo http://socios.spc.org.pe/gparedes/?page=docs (freebsd redes networking vpn)
[Discover] Conectar cliente vpn Ubuntu a servidor vpn Windows « Aprendiendo de todo http://aprendizdetodo.wordpress.com/2006/10/24/conectar-cliente-vpn-ubuntu-a-servidor-vpn-windows/ (linux vpn)
[Discover] Cómo instalar y configurar OpenVPN | EcuaLUG http://www.ecualug.org/?q=2007/02/06/comos/centos/c_mo_instalar_y_configurar_openvpn (openvpn linux vpn centos)
[Discover] Comparing VPN Options http://www.windowsecurity.com/articles/VPN-Options.html (network vpn ipsec infosec)
[Discover] Hamachi: VPN + P2P + GRATIS! « Matías Insaurralde http://matiasbaruchinsaurralde.wordpress.com/2006/12/08/hamachi-vpn-p2p-gratis/ (redes vpn)
[Discover] BULMA: poptop: haciendo túneles VPN de Windows a Linux (o de Linux a Linux) http://bulma.net/impresion.phtml?nIdNoticia=1743 (vpn)
[Discover] Building an Open Source VPN Solution http://www.michael-i.com/files/projects/m0n0ad/index.php?section=m0n0wall%20Configuration (pptp monowall vpn)
[Discover] Finding Facts http://www.findingfacts.com/L3/L3_1_13_14.php (vpn)
[Discover] Gentoo Forums :: View topic - OpenVPN 2.0 TAP mini-HOWTO (linux 2 wifi-linux, wifi-xp) http://forums.gentoo.org/viewtopic.php?t=233080 (linux vpn openvpn gentoo)
[Discover] Cory Foy: Creating a PPTP tunnel using Monowall http://www.cornetdesign.com/2006/01/creating-pptp-tunnel-using-monowall.html (pptp linux tutorial configuration)
[Discover] Debian Administration :: Creating a radius based VPN with support for Windows clients http://www.debian-administration.org/articles/245 (debian radius ipsec linux)
[Discover] GNU Virtual Private Ethernet http://savannah.gnu.org/projects/gvpe (vpn linux network opensource)
[Discover] ClarkConnect - Server and Gateway - Linux Small Business Server SBS http://www.clarkconnect.com/index.php (network linux os distro)
[Discover] Kevin Hatfield’s Blog » Blog Archive » How to Install PPTP GUI (To connect windows VPN) in ... http://kevin.hatfieldfamilysite.com/?p=146 (ubuntu howto pptp linux)
[Discover] FAQ - Microsoft's PPTP Implementation http://www.schneier.com/pptp-faq.html (pptp vpn)
[Discover] Punching holes into firewalls http://sebsauvage.net/punching/ (ssh firewall network hack)
[Discover] James Strassburg: HOWTO: Tunneling HTTP over SSH with DD-WRT, DynDNS and Putty http://jstrassburg.blogspot.com/2006/01/howto-tunneling-http-over-ssh-with-dd.html (ssh http tunnel tunneling)
[Discover] tinc http://www.tinc-vpn.org/ (network opensource windows linux)
[Discover] Windows NT: Understanding PPTP (Windows NT 4.0) http://www.microsoft.com/technet/archive/winntas/plan/pptpudst.mspx?mfr=true (microsoft pptp vpn)
[Discover] Zeroshell - Una distribuzione Linux per server e dispositivi embedded http://www.zeroshell.net/ (network linux distro server)
[Discover] OpenSSH cutting edge http://www.securityfocus.com/columnists/375 (security linux interview todo)
[Discover] Web based VPN with SSL-Explorer on Ubuntu | SubVS http://www.subvs.co.uk/ssl_vpn_on_ubuntu (network ubuntu linux security)
[Discover] Securing an 802.11a/b/g Network with a VPN using Linux 2.6 http://nhaggin.freeshell.org/wireless-vpn-howto/ (linux security tutorial openvpn)
[Discover] Andrea Beggi » Usare OpenVPN per connettersi ad una rete http://www.andreabeggi.net/2007/08/20/usare-openvpn-per-connettersi-ad-una-rete/ (server sysadmin howto linux)
[Discover] Debian Administration :: Setting up a Layer 3 tunneling VPN with using OpenSSH http://www.debian-administration.org/articles/539 (ssh sysadmin linux vpn)
[Discover] How To: Cisco VPN Client On Ubuntu 7.04 (Feisty Fawn) at T. Longren http://www.longren.org/2007/05/17/how-to-cisco-vpn-client-on-ubuntu-704-feisty-fawn/ (vpn ubuntu linux cisco)
[Discover] Tunnel everything through SSH http://www.plenz.com/tunnel-everything (ssh tunnel proxy security)
[Discover] Endian Firewall http://www.efw.it/ (linux opensource tools firewall)
[Discover] Routing and Remote Access Blog : Vista as VPN Server (Incoming Connections) http://blogs.technet.com/rrasblog/archive/2007/01/25/vista-as-vpn-server-incoming-connections.aspx (vista server vpn)
[Discover] Netlock/Apani/Nortel VPN Client - Ubuntu Forums http://ubuntuforums.org/showthread.php?t=110843 (client ubuntu linux security)
[Discover] pptpconfig http://quozl.us.netrek.org/pptp/pptpconfig/pptpconfig.phtml (linux pptp vpn)
[Discover] Home http://www.untangle.com/ (network opensource free linux)
[Discover] HOWTO set up Juniper Network Connect VPN on Ubuntu Dapper - Ubuntu Forums http://ubuntuforums.org/showthread.php?p=1546750 (ubuntu juniper vpn linux)
[Discover] Free SSH for Windows 9x, NT, ME, 2000 and XP http://www.jfitz.com/tips/ssh_for_windows.html (windows ssh network tools)
[Discover] BULMA: poptop: haciendo túneles VPN de Windows a Linux (o de Linux a Linux) http://bulma.net/body.phtml?nIdNoticia=1743 (etch pptp howto debian)
[Discover] import clue: PPTP From Ubuntu http://shiny.thorne.id.au/2007/01/pptp-from-ubuntu.html (pptp ubuntu linux vpn)
[Discover] Linux: VPN em Linux com OpenVPN [Artigo] http://www.vivaolinux.com.br/artigos/verArtigo.php?codigo=2602&pagina=1 (pptp linux vpn)
[Discover] Ubuntu下连接VPN! - 蓝法典的专栏 - CSDNBlog http://blog.csdn.net/psyl/archive/2006/10/26/1352026.aspx (linux pptp ubuntu vpn)
[Discover] IP Blocks inside China http://www.nic.edu.cn/RS/ipstat/internalip/real20061101.html (ip china vpn)
[Discover] Cisco VPN client under Ubuntu 6.06 (LTS) Linux | popey.com http://popey.com/Cisco_VPN_client_under_Ubuntu_6.06_@LTSA_Linux (cisco ubuntu linux vpn)
[Discover] 好记性不如烂笔头 » Blog Archive » linux下教育网直通车的安装配置-Virtual ... http://www.herofit.cn/2006/08/13_126 (ubuntu 教育网直通车 vpn)
[Discover] PPTP/PPP support for NetworkManager at Tony’s Blog http://www.students.ncl.ac.uk/a.j.mee/blog/index.php/software/networkmanager/pptp-plugin (pptp linux ubuntu vpn)
[Discover] PPTP Client http://pptpclient.sourceforge.net/howto-ubuntu.phtml (pptp ubuntu linux vpn)
[Discover] Brian Dailey: How To Set Up Microsoft VPN Connection In Ubuntu 6.10 (Edgy Eft) http://www.dailytechnology.net/how_to_setup_vpn_in_ubunty_edgy_eft.php (pptp linux ubuntu howto)
[Discover] import this. » Blog Archive » HOWTO: Secure Firefox and IM with PuTTY http://thinkhole.org/wp/2006/05/10/howto-secure-firefox-and-im-with-putty/ (ssh windows security apps)
[Discover] Tuneles VPN en Debian Etch con MPPE | Bytecoders http://bytecoders.homelinux.com/content/tuneles-vpn-en-debian-etch-con-mppe.html (etch pptp howto debian)
[Discover] Windows Get Started Using Remote Desktop http://www.microsoft.com/windowsxp/using/mobility/getstarted/remoteintro.mspx (windows remote network microsoft)
[Discover] How to Bypass Most Firewall Restrictions and Access the Internet Privately http://www.buzzsurf.com/surfatwork/ (ssh privacy firewall security)
[Discover] VPN Connection in Edgy « customising life http://customisinglife.wordpress.com/2006/11/20/vpn-connection-in-edgy/ (pptp linux ubuntu vpn)
[Discover] Gentoo Forums :: View topic - Gentoo + Juniper NetScreen? http://forums.gentoo.org/viewtopic-t-374292-highlight-juniper+vpn.html (linux juniper vpn)
[Discover] Installing the VPN on Linux http://help.unc.edu/3081 (instructions linux howto vpn)
[Discover] Record as I Am - Connecting to a VPN in Ubuntu http://www.oscarm.org/news/detail/1854-connecting_to_a_vpn_in_ubuntu (pptp linux ubuntu howto)
[Discover] PPTP Client http://pptpclient.sourceforge.net/documentation.phtml (linux network pptp redes)
[Discover] Manual de uma VPN com o protocolo PPTP em Linux http://www.guiadohardware.net/artigos/vpn-pptp/ (pptp linux vpn)
[Discover] OpenVPN - An Open Source SSL VPN Solution by James Yonan http://openvpn.net/ (network opensource software vpn)
[Discover] Hamachi : Stay Connected http://hamachi.cc/ (windows network software security)
[Discover] gentoo: OpenVPN http://gentoo-wiki.com/HOWTO_OpenVPN_primer (gentoo vpn howto openvpn)
[Discover] How to Install Openvpn | The Bakers Homepage http://www.thebakershome.net/?q=node/56 (ubuntu openvpn vpn tutorial)
[Discover] FreeS/WAN Project: Home Page http://www.freeswan.org/ (linux ipsec security network)
[Discover] Various Linux Tips http://mancill.com/freesoftware/linuxtips/index.html (linux pptp redes networking)
[Discover] Julio Guillermo Paredes Cornejo http://socios.spc.org.pe/gparedes/?page=docs (freebsd redes networking vpn)
[Discover] Conectar cliente vpn Ubuntu a servidor vpn Windows « Aprendiendo de todo http://aprendizdetodo.wordpress.com/2006/10/24/conectar-cliente-vpn-ubuntu-a-servidor-vpn-windows/ (linux vpn)
[Discover] Cómo instalar y configurar OpenVPN | EcuaLUG http://www.ecualug.org/?q=2007/02/06/comos/centos/c_mo_instalar_y_configurar_openvpn (openvpn linux vpn centos)
[Discover] Comparing VPN Options http://www.windowsecurity.com/articles/VPN-Options.html (network vpn ipsec infosec)
[Discover] Hamachi: VPN + P2P + GRATIS! « Matías Insaurralde http://matiasbaruchinsaurralde.wordpress.com/2006/12/08/hamachi-vpn-p2p-gratis/ (redes vpn)
[Discover] BULMA: poptop: haciendo túneles VPN de Windows a Linux (o de Linux a Linux) http://bulma.net/impresion.phtml?nIdNoticia=1743 (vpn)
[Discover] Building an Open Source VPN Solution http://www.michael-i.com/files/projects/m0n0ad/index.php?section=m0n0wall%20Configuration (pptp monowall vpn)
[Discover] Finding Facts http://www.findingfacts.com/L3/L3_1_13_14.php (vpn)
[Discover] Gentoo Forums :: View topic - OpenVPN 2.0 TAP mini-HOWTO (linux 2 wifi-linux, wifi-xp) http://forums.gentoo.org/viewtopic.php?t=233080 (linux vpn openvpn gentoo)
[Discover] Cory Foy: Creating a PPTP tunnel using Monowall http://www.cornetdesign.com/2006/01/creating-pptp-tunnel-using-monowall.html (pptp linux tutorial configuration)
[Discover] Debian Administration :: Creating a radius based VPN with support for Windows clients http://www.debian-administration.org/articles/245 (debian radius ipsec linux)
[Discover] GNU Virtual Private Ethernet http://savannah.gnu.org/projects/gvpe (vpn linux network opensource)
[Discover] strongSwan - IPsec for Linux http://www.strongswan.org/index.htm (linux opensource pki ipsec)
[Discover] ClarkConnect - Server and Gateway - Linux Small Business Server SBS http://www.clarkconnect.com/index.php (network linux os distro)
[Discover] Kevin Hatfield’s Blog » Blog Archive » How to Install PPTP GUI (To connect windows VPN) in ... http://kevin.hatfieldfamilysite.com/?p=146 (ubuntu howto pptp linux)
[Discover] FAQ - Microsoft's PPTP Implementation http://www.schneier.com/pptp-faq.html (pptp vpn)
[Discover] Punching holes into firewalls http://sebsauvage.net/punching/ (ssh firewall network hack)
[Discover] James Strassburg: HOWTO: Tunneling HTTP over SSH with DD-WRT, DynDNS and Putty http://jstrassburg.blogspot.com/2006/01/howto-tunneling-http-over-ssh-with-dd.html (ssh http tunnel tunneling)
[Discover] tinc http://www.tinc-vpn.org/ (network opensource windows linux)
[Discover] Windows NT: Understanding PPTP (Windows NT 4.0) http://www.microsoft.com/technet/archive/winntas/plan/pptpudst.mspx?mfr=true (microsoft pptp vpn)
[Discover] Zeroshell - Una distribuzione Linux per server e dispositivi embedded http://www.zeroshell.net/ (network linux distro server)
[Discover] OpenSSH cutting edge http://www.securityfocus.com/columnists/375 (security linux interview todo)
[Discover] Web based VPN with SSL-Explorer on Ubuntu | SubVS http://www.subvs.co.uk/ssl_vpn_on_ubuntu (network ubuntu linux security)
[Discover] Securing an 802.11a/b/g Network with a VPN using Linux 2.6 http://nhaggin.freeshell.org/wireless-vpn-howto/ (linux security tutorial openvpn)
[Discover] Andrea Beggi » Usare OpenVPN per connettersi ad una rete http://www.andreabeggi.net/2007/08/20/usare-openvpn-per-connettersi-ad-una-rete/ (server sysadmin howto linux)
[Discover] Debian Administration :: Setting up a Layer 3 tunneling VPN with using OpenSSH http://www.debian-administration.org/articles/539 (ssh sysadmin linux vpn)
[Discover] How To: Cisco VPN Client On Ubuntu 7.04 (Feisty Fawn) at T. Longren http://www.longren.org/2007/05/17/how-to-cisco-vpn-client-on-ubuntu-704-feisty-fawn/ (vpn ubuntu linux cisco)
[Discover] Tunnel everything through SSH http://www.plenz.com/tunnel-everything (ssh tunnel proxy security)
[Discover] Endian Firewall http://www.efw.it/ (linux opensource tools firewall)
[Discover] Routing and Remote Access Blog : Vista as VPN Server (Incoming Connections) http://blogs.technet.com/rrasblog/archive/2007/01/25/vista-as-vpn-server-incoming-connections.aspx (vista server vpn)
[Discover] Netlock/Apani/Nortel VPN Client - Ubuntu Forums http://ubuntuforums.org/showthread.php?t=110843 (client ubuntu linux security)
[Discover] pptpconfig http://quozl.us.netrek.org/pptp/pptpconfig/pptpconfig.phtml (linux pptp vpn)
[Discover] Home http://www.untangle.com/ (network opensource free linux)
[Discover] HOWTO set up Juniper Network Connect VPN on Ubuntu Dapper - Ubuntu Forums http://ubuntuforums.org/showthread.php?p=1546750 (ubuntu juniper vpn linux)
[Discover] Free SSH for Windows 9x, NT, ME, 2000 and XP http://www.jfitz.com/tips/ssh_for_windows.html (windows ssh network tools)
[Discover] BULMA: poptop: haciendo túneles VPN de Windows a Linux (o de Linux a Linux) http://bulma.net/body.phtml?nIdNoticia=1743 (etch pptp howto debian)
[Discover] import clue: PPTP From Ubuntu http://shiny.thorne.id.au/2007/01/pptp-from-ubuntu.html (pptp ubuntu linux vpn)
[Discover] Linux: VPN em Linux com OpenVPN [Artigo] http://www.vivaolinux.com.br/artigos/verArtigo.php?codigo=2602&pagina=1 (pptp linux vpn)
[Discover] Ubuntu下连接VPN! - 蓝法典的专栏 - CSDNBlog http://blog.csdn.net/psyl/archive/2006/10/26/1352026.aspx (linux pptp ubuntu vpn)
[Discover] IP Blocks inside China http://www.nic.edu.cn/RS/ipstat/internalip/real20061101.html (ip china vpn)
[Discover] Cisco VPN client under Ubuntu 6.06 (LTS) Linux | popey.com http://popey.com/Cisco_VPN_client_under_Ubuntu_6.06_@LTSA_Linux (cisco ubuntu linux vpn)
[Discover] 好记性不如烂笔头 » Blog Archive » linux下教育网直通车的安装配置-Virtual ... http://www.herofit.cn/2006/08/13_126 (ubuntu 教育网直通车 vpn)
[Discover] PPTP/PPP support for NetworkManager at Tony’s Blog http://www.students.ncl.ac.uk/a.j.mee/blog/index.php/software/networkmanager/pptp-plugin (pptp linux ubuntu vpn)
[Discover] PPTP Client http://pptpclient.sourceforge.net/howto-ubuntu.phtml (pptp ubuntu linux vpn)
[Discover] Brian Dailey: How To Set Up Microsoft VPN Connection In Ubuntu 6.10 (Edgy Eft) http://www.dailytechnology.net/how_to_setup_vpn_in_ubunty_edgy_eft.php (pptp linux ubuntu howto)
[Discover] import this. » Blog Archive » HOWTO: Secure Firefox and IM with PuTTY http://thinkhole.org/wp/2006/05/10/howto-secure-firefox-and-im-with-putty/ (ssh windows security apps)
[Discover] Tuneles VPN en Debian Etch con MPPE | Bytecoders http://bytecoders.homelinux.com/content/tuneles-vpn-en-debian-etch-con-mppe.html (etch pptp howto debian)
[Discover] Windows Get Started Using Remote Desktop http://www.microsoft.com/windowsxp/using/mobility/getstarted/remoteintro.mspx (windows remote network microsoft)
[Discover] How to Bypass Most Firewall Restrictions and Access the Internet Privately http://www.buzzsurf.com/surfatwork/ (ssh privacy firewall security)
[Discover] VPN Connection in Edgy « customising life http://customisinglife.wordpress.com/2006/11/20/vpn-connection-in-edgy/ (pptp linux ubuntu vpn)
[Discover] Gentoo Forums :: View topic - Gentoo + Juniper NetScreen? http://forums.gentoo.org/viewtopic-t-374292-highlight-juniper+vpn.html (linux juniper vpn)
[Discover] Installing the VPN on Linux http://help.unc.edu/3081 (instructions linux howto vpn)
[Discover] Record as I Am - Connecting to a VPN in Ubuntu http://www.oscarm.org/news/detail/1854-connecting_to_a_vpn_in_ubuntu (pptp linux ubuntu howto)
[Discover] PPTP Client http://pptpclient.sourceforge.net/documentation.phtml (linux network pptp redes)
[Discover] Manual de uma VPN com o protocolo PPTP em Linux http://www.guiadohardware.net/artigos/vpn-pptp/ (pptp linux vpn)