With the explosive growth and popularity of the Internet, more and more enterprises are looking towards building their network infrastructure across the Internet without having to spend a lot on ...

When the idea of MPLS VPNs was first discussed, there was a strong notion of competition between MPLS VPNs and IPsec VPNs. Many people voiced concern that MPLS VPN technology does not add significant ...

As discussed above, IPsec delivers data confidentiality services by executing a transform on plain text data. Common ciphers used in the IPsec transform are DES, 3DES, and AES. All of these transforms ...

The use of IPsec is pervasive throughout the networking industry. However, many organizations are using IPsec in sub-optimal configurations that result in weaker connection security. Many ...

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 ...

Just ping with the DF bit set and increase packet size until it no longer works. With ipsec you can generally get up to 1400 without issue if you want to keep from fragmenting assuming the rest of the ...

Virtual private networks, or VPNs, extend the reach of LANs without requiring owned or leased private lines. Companies can use VPNs to provide remote and mobile users with network access, connect ...

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 ...

Over the past five years or so, IPSec has emerged as the leading standard for building encrypted virtual private network (VPN) connections. FreeS/WAN (www.freeswan.org), the free secure wide area ...