Multitech MTCBA-H3-EN3-P1 User's Guide download pdf (Page 52)

Chapter 3 – Using the Web Management Software

Multi-Tech Systems, Inc. MultiModem rCell User Guide 52

Authentication Key The VPN firewall could use either MD5-96 or SHA1-96 for authentication. For example,

MD5-96 could have a key of abcdefgh12345678.

Authentication Protocol

Key Length

Accepted Characters

SHA1-96

Must be 20 characters

Alphanumeric

MD5-96

Must be 16 characters

Alphanumeric

Encryption Method Select the encryption method. Options include: 3DES, AES-128, AES-192, AES-256, and

NULL (no encryption).

Encryption Key The router can use any one of the methods specified in its encryption algorithm. For

example 3DES uses 24 alphanumeric characters (192 bits) as its encryption key.

Example: 1234567890abcdefabcdabcd

Encryption Protocol

Key Length

Accepted Characters

Null

Must be 24 characters

Alphanumeric

3DES

Must be 24 characters

Alphanumeric

AES-128

Must be 16 characters

Alphanumeric

AES-192

Must be 24 characters

Alphanumeric

AES-256

Must be 32 characters

Alphanumeric

SPI Base The Security Parameter Index identifies a manual connection. The SPI is a unique

identifier in the SA (Secure Association – a type of secure connection) that allows the

receiving computer to select the SA under which a packet processes. SPI Base is a

number needed by the manual keying code. Enter any 3-digit hexadecimal number,

which is unique for a security association. It should be in the form 0xhex (0x100 through

0xfff is recommended). If you have more than one manual connection, then the SPI

Base must be different for each one.

Left Next Hop Next Hop is the address of the next device in a routing table’s path that moves a packet

to its destination. Configure this setting or leave it as a static value: 0.0.0.0. When not

configured, the value is set to the Gateway of the Box/Gateway configured on the

Interface/Right IP. The selection is based on the Left and Right IP.

Local WAN IP Select the Interface to initiate the IPSec tunnel (Left Security Gateway).

Local LAN Select the internal subnet of the local security gateway for which the security services

are to be provided. If the router acts as a host, this should be configured as None. Other

options are: Any, LAN, LAN Interface, WAN 1, WAN 1 Interface.

Remote Gateway IP Select the interface in which the IPSec tunnel ends. In the case of Road Warriors with a

Dynamic IP addresses, this should be configured as ANY. Other options include: LAN,

LAN Interface, WAN 1, WAN 1 Interface, and None.

FQDN FQDN is a Fully Qualified Domain Name that resolves to the Local Wan IP of the router

or in the case of GRE/IPSEC, it is used to identify the Wan IP of the remote location. This

is provided by your ISP or created by you if you are using a Dynamic DNS service. When

FQDN is selected, the Remote Gateway IP should be left blank.

Remote LAN This is the internal subnet of the remote security gateway for which the security

services are to be provided. If the remote end is a host, this should be configured as

None.

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