This web site is seriously dated. I do not use IPCop anymore because it is i386 only and hadn’t been updated for several years. I am currently using a PFSense based firewall.<\/p>\n
I plan to add a series of articles on how to connect an IPCop firewall to various other devices using IPSec VPNs,\u00a0 Certificates and Perfect Forward Security. I had a one page article on another site that will eventually forward to here.<\/p>\n
These articles will go over how to set up certificate based IPSec VPNs from an IPCop firewall using <\/span>Openswan. I really started studying how to set up IPSec VPN tunnels several years ago and found some problems. The reason that I decided to write these articles is that too many other tutorials use pre-shared keys(PSK) and IPSec aggressive mode. Using that combination is just insecure. Some cable providers will let you see all of the traffic of your neighbors or someone could compromise a server at your ISP and run a packet sniffer capturing your traffic and then run ikecrack.pl on it. They would then have your pre-shared key and be able to impersonate you when your connection goes down. So these articles will go through a more secure way of setting up connections using certificates and IPSec \u201cMain\u201d mode.<\/span><\/p>\n This was tested using IPCop 2.1.5\u00a0 and various other IPSec VPN clients. Each on its own page or pages.<\/p>\n I have an AT&T DSL line with the DSL modem set in \u201cDMZPlus\u201d mode with my IPCop box red or WAN interface getting an external IP address via DHCP. This is important for net-to-net connections as both sides must have a DNS resolvable name and not be behind another firewall using NAT.<\/p>\n Set up a dynamic DNS service like freedns.afraid.org<\/a> or get a static IP address from your Internet Service Provider and buy a domain and have a host name point to it. This way the remote computer can find your IPCop server to initiate the VPN connection.<\/span><\/p>\n This web site is seriously dated. I do not use IPCop anymore because it is i386 only and hadn’t been updated for several years. I am currently using a PFSense based firewall. I plan to add a series of articles … Continue reading Donald Trump is a lying loser.<\/h6>\n","protected":false},"excerpt":{"rendered":"