TN040 - GRE and IPsec tunneling

Setting up GRE and IPsec tunneling

Last Issue Date: March 24, 2016

Document Status: Current

See Also: N/A


General Routing Encapsulation (GRE) and Internet Protocol Security (IPSec) are tunneling protocols available on the Ctek SkyRouter. Both provide point-to-point routing links over an Internet Protocol (IP) connection. IPSec also provides authentication and encryption of the link and mechanisms for mutual authentication and the negotiation of cryptographic keys to be used to encrypt the session. Ctek’s SkyRouter supports 2 simultaneous GRE tunnels and up to 8 simultaneous IPSec tunnels.