Chapter 13 Routing Protocols

 

Table 97 Network > Routing > OSPF > Edit (continued)

 

LABEL

DESCRIPTION

 

Authentication

Select which authentication method to use in the virtual link. This authentication

 

 

protects the integrity, but not the confidentiality, of routing updates.

 

 

None uses no authentication.

 

 

Text uses a plain text password that is sent over the network (not very secure).

 

 

MD5 uses an MD5 password and authentication ID (most secure).

 

 

Same as Area has the virtual link also use the Authentication settings above.

 

 

 

 

Text

This field is available if the Authentication is Text. Type the password for text

 

Authentication

authentication. The key can consist of alphanumeric characters and the

 

Key

underscore, and it can be up to 8 characters long.

 

 

 

 

MD5

This field is available if the Authentication is MD5. Type the default ID for MD5

 

Authentication ID

authentication in the area. The ID can be between 1 and 255.

 

 

 

 

MD5

This field is available if the Authentication is MD5. Type the default password for

 

Authentication

MD5 authentication in the area. The password can consist of alphanumeric

 

Key

characters and the underscore, and it can be up to 16 characters long.

 

 

 

 

Add icon

This column provides icons to add and remove virtual links.

 

 

To add a virtual link, click the Add icon at the top of the column. A new record

 

 

appears in the virtual link list.

 

 

To delete a virtual link, click on the Remove icon next to the virtual link. The web

 

 

configurator confirms that you want to delete the virtual link.

 

 

 

 

OK

Click OK to save your changes back to the ZyWALL.

 

 

 

 

Cancel

Click Cancel to exit this screen without saving.

 

 

 

13.4 Routing Protocol Technical Reference

Here is more detailed information about RIP and OSPF.

Authentication Types

Authentication is used to guarantee the integrity, but not the confidentiality, of routing updates. The transmitting router uses its key to encrypt the original message into a smaller message, and the smaller message is transmitted with the original message. The receiving router uses its key to encrypt the received message and then verifies that it matches the smaller message sent with it. If the received message is verified, then the receiving router accepts the updated routing information. The transmitting and receiving routers must have the same key.

The ZyWALL supports three types of authentication for RIP and OSPF routing protocols:

•None - no authentication is used.

•Text – authentication using a plain text password, and the (unencrypted) password is sent over the network. This method is usually used temporarily to prevent network problems.

•MD5 – authentication using an MD5 password and authentication ID.

MD5 is an authentication method that produces a 128-bit checksum, called a message-digest, for each packet. It also includes an authentication ID, which can be set to any value between 1 and 255. The ZyWALL only accepts packets if these conditions are satisfied.

•The packet’s authentication ID is the same as the authentication ID of the interface that received it.

 

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ZyWALL USG 100/200 Series User’s Guide