GIGABYTE GN-BR404W - Manual (Page 81)

3-4-8 VPN Configuration
A VPN is a secure, private communication tunnel between two or more devices across a
public network (like the Internet). These VPN devices can be either a computer running
VPN software or a special device like a VPN enabled router. It allows your home computer
to be connected to your office network or can allow two home computers in different
locations to connect to each over the Internet.
Clients and Servers
A VPN server is a piece of hardware or software that can acts as a gateway into a whole
network or a single computer. It is generally ‘always on’ and listening for VPN clients to
connect to it.
A VPN Client is most often a piece of software but can be hardware too. A client initiates a
‘call’ to the server and logs on. Then the client computer can server network can
communicate. They are on the same ‘virtual’ network. Many broadband routers can 'pass'
one or more VPN sessions from your LAN to the Internet. Each router handles this
differently.
The Gigabyte router is a IPSec VPN which support following function:
1. Groups for Diffie-Hellman key negotiation - group 2, modp 1024-bit
2. Encryption transforms - Triple DES
3. Authentication transforms -HMAC using MD5
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