Because they eliminate the high costs associated with dedicated leased lines, VPNs are becoming increasingly popular as a means of providing secure communication between enterprises and branch offices ...

Last month I introduced FreeS/WAN, Linux's implementation of the IPSec tunneling protocol for secure virtual private networks (VPNs). For my sample configuration, I used the common scenario of remote ...

The Layer 2 Tunneling Protocol (L2TP) is a standard protocol for tunneling L2 traffic over an IP network. Its ability to carry almost any L2 data format over IP or other L3 networks makes it ...

Build Your Skills: Learn why NAT can cause VPN connection problems Your email has been sent Why network address translation (NAT) on an Internet router keeps the VPN client from making the connection ...