Mar 30, 2013
Information About IP Tunnels. IPtunnelscanencapsulateasame-layerorhigher-layerprotocolandtransporttheresultoverIPthrougha tunnelcreatedbetweentwodevices. IPtunnelsconsistsofthefollowingthreemaincomponents: •Passengerprotocol—Theprotocolthatneedstobeencapsulated.IPv4isanexampleofapassenger protocol. •Carrierprotocol—Theprotocolthatisusedtoencapsulatethepassengerprotocol.CiscoNX-OSsupports genericroutingencapsulation(GRE),andIP-in-IPencapsulationanddecapsulationascarrierprotocols. IP Tunneling-Some links below may open a new browser window to display the document you selected. A VPN tunnel — short for virtual private network tunnel — can provide a way to cloak some of your online activity. How? A VPN tunnel connects your smartphone, laptop, computer, or tablet to another network in which your IP address is hidden and all the data you generate while surfing the web is encrypted. Aug 03, 2006 · Tunnels are a mechanism used to send unsupported protocols across diverse networks. Tunneled data, VPN or other, adds to the size of the packet, resulting in less data being sent per-packet. Tunneling data over ssh is normally a per-application VPN, but the latest version of OpenSSH implements a full-blown hassle-free VPN. IPSec tunnel mode is the default mode. With tunnel mode, the entire original IP packet is protected by IPSec. This means IPSec wraps the original packet, encrypts it, adds a new IP header and sends it to the other side of the VPN tunnel (IPSec peer).
Jun 18, 2017
An IP tunnel is an Internet Protocol (IP) network communications channel between two networks. It is used to transport another network protocol by encapsulation of its packets . IP tunnels are often used for connecting two disjoint IP networks that don't have a native routing path to each other, via an underlying routable protocol across an intermediate transport network.
In order to address a specific concern in the way the IP Layer Enforcement features work, and also to improve reporting so you can be aware of specific security incidents, OpenDNS is introducing a new security category: Unauthorized IP Tunnel access.
How To Configure IPSec Tunneling in Windows Server 2003