VR-200 16-Port Multi-WAN VPN Router
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Aggressive Mode:
There are two types of Phase 1 exchanges: Main mode and
Aggressive mode. Aggressive Mode requires half of the main mode messages to be
exchanged in Phase 1 of the SA exchange. If network security is preferred, select
Main mode. If network speed is preferred, select Aggressive mode. When Group
VPN is enabled, it will be limited as Aggressive Mode. If you select Dynamic IP in
Remote Client Type in tunnel mode, it will be also limited as Aggressive Mode.
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Compress (Support IP Payload compression Protocol (IP Comp)):
16-Port
Multi-WAN VPN Router supports IP Payload compression Protocol. IP Payload
Compression is a protocol to reduce the size of IP datagrams. If Compress is
enabled, 16-Port Multi-WAN VPN Router will propose compression when initiating a
connection. If the responders reject this propose, 16-Port Multi-WAN VPN Router
will not implement the compression. When 16-Port Multi-WAN VPN Router works as
a responder, 16-Port Multi-WAN VPN Router will always accept compression even
without enabling compression.
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Keep-Alive:
This mechanism helps to keep up the connection of IPSec tunnels.
Whenever a connection is dropped and detected, it will be re-established
immediately.
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AH Hash Algorithm:
AH (Authentication Header) protocol describes the packet
format and the default standards for packet structure. With the use of AH as the
security protocol, protection is extended forward into IP header to verify the integrity