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3.6.3.5.2 VPN - IPSec
The router supports IPSec VPN to establish secure, end-to-end private network connections
over a public networking infrastructure.
Connection Name:
A user-defined name for the connection (e.g. “connection to office”).
Local:
Network:
Set the IP address, subnet or address range of the local network.
•
Single Address:
The IP address of the local host.
•
Subnet:
The subnet of the local network. For example, IP: 192.168.1.0 with
netmask 255.255.255.0 specifies one class C subnet starting from 192.168.1.1
(i.e. 192.168.1.1 through to 192.168.1.254).
•
IP Range:
The IP address range of the local network. For example, IP:
192.168.1.1, end IP:192.168.1.10
Remote:
•
Secure Gateway Address (or Domain Name):
The IP address or hostname of the
remote VPN device that is connected and establishes a VPN tunnel.
•
Network:
Set the IP address, subnet or address range of the remote network.
•
Proposal:
Select the IPSec security method. There are two methods of checking the
authentication information, AH (authentication header) and ESP (Encapsulating
Security Payload).
Use ESP for greater security so that data will be encrypted and authenticated. Using
AH data will be authenticated but not encrypted.
•
Authentication:
Authentication establishes the integrity of the datagram and ensures
it is not tampered with in transmit. There are three options, Message Digest 5 (
MD5
),
Secure Hash Algorithm (
SHA1
) or
NONE
. SHA1 is more resistant to brute-force
attacks than MD5, however it is slower.
1.
MD5:
A one-way hashing algorithm that produces a 128
−
bit hash.
2.
SHA1:
A one-way hashing algorithm that produces a 160
−
bit hash.
Encryption:
Select the encryption method from the pull-down menu. There are several
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