Tunneling is a concept where we put ‘packets into packets’ so that they can be transported over certain networks. We also call this encapsulation.. A good example is when you have two sites with IPv6 addresses on their LAN but they are only connected to the Internet with IPv4 addresses.Normally it would be impossible for the two IPv6 LANs to reach each other but by using tunneling the two

Making Sense of Split Tunneling Split tunneling is not a new concept in the realm of remote access networking. The technology emerged in the 1990s to allow VPN users to access a public network and a LAN or WAN simultaneously. But despite this longevity, its merits and security continue to be disputed How Virtual Private Networks Work - Cisco Oct 13, 2008 Network Address Broadcast Address and IP Address Explained

• Tunneling is an internetworking strategy that is used when source and destination networks of same type are connected through a network of different type. • In such a case, the packet from one network reaches the other network via different kind pf network that interconnects them.

Typically, DNS tunneling requires the compromised system to have external network connectivity, as DNS tunneling requires access to an internal DNS server with network access. Hackers must also control a domain and a server that can act as an authoritative server in order to execute the server-side tunneling and data payload executable programs.

Aug 03, 2006

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