HotBrick Network Solutions
Key Management
Key – Key Type: there are two key types (manual key and auto key) available for the key exchange management.
Manual Key: If manual key is selected, no key negotiation is needed. Encryption Key- This field specifies a key to encrypt and decrypt IP traffic. Authentication Key – This field specifies a key use to auth entication IP traffic. Inbound/outbound SPI (Security Parameter Index)
–is carried on the ESP header. Each tunnel must have a unique inbound and outbound SPI, and no two tunnels share the same SPI. Notice that Inbound SPI must match the other router’s outbound SPI.
AutoKey (IKE)- There are two types of operation modes can be used.
Main mode accomplishes a phase one IKE exchange by establishing a secure channel. Aggressive Mode is another way of accomplishing a phase one exchange. It is faster and simpler than main mode, but does not provide identity protection for the negotiating nodes.
Perfect Forward Secrecy (PFS) – If PFS is enable, IKE phase 2 negotiation will generate a new key material for IP traffic encryption & authentication. Preshared Key – This field is to authenticate the remote IKE peer. Key Lifetime- This is specified the lifetime of the IKE generated Key. If the time expires or data is passed over this volumn, a new key will be renegotiated, By default, 0 is for no limit.
Page 56