User's Manual Part 1

Chapter 8 Security
BM2022w User’s Guide
154
addresses. The BM2022w can distinguish up to 48 incoming SAs because you can select between
three encryption algorithms (DES, 3DES and AES), two authentication algorithms (MD5 and SHA1)
and eight key groups when you configure a VPN rule (see
Section 8.11.1 on page 141). The ID type
and content act as an extra level of identification for incoming SAs.
The type of ID can be a domain name, an IP address or an e-mail address. The content is the IP
address, domain name, or e-mail address.
8.12.7.1 ID Type and Content Examples
Two IPSec routers must have matching ID type and content configuration in order to set up a VPN
tunnel.
The two BM2022ws in this example can complete negotiation and establish a VPN tunnel.
The two BM2022ws in this example cannot complete their negotiation because BM2022w B’s Local
ID type is IP, but BM2022w A’s Remote ID type is set to E-mail. An “ID mismatched” message
displays in the IPSEC LOG.
8.12.8 Pre-Shared Key
A pre-shared key identifies a communicating party during a phase 1 IKE negotiation (see Section
8.12.3 on page 151 for more on IKE phases). It is called “pre-shared” because you have to share it
with another party before you can communicate with them over a secure connection.
Table 65 Local ID Type and Content Fields
LOCAL ID TYPE= CONTENT=
IP Type the IP address of your computer.
DNS Type a domain name (up to 31 characters) by which to identify this BM2022w.
E-mail Type an e-mail address (up to 31 characters) by which to identify this BM2022w.
The domain name or e-mail address that you use in the Local ID Content field
is used for identification purposes only and does not need to be a real domain
name or e-mail address.
Table 66 Matching ID Type and Content Configuration Example
BM2022w A BM2022w B
Local ID type: E-mail Local ID type: IP
Local ID content: [e-mail] Local ID content: 1.1.1.2
Remote ID type: IP Remote ID type: E-mail
Remote ID content: 1.1.1.2 Remote ID content: [e-mail]
Table 67 Mismatching ID Type and Content Configuration Example
BM2022W A BM2022W B
Local ID type: IP Local ID type: IP
Local ID content: 1.1.1.10 Local ID content: 1.1.1.2
Remote ID type: E-mail Remote ID type: IP
Remote ID content: [e-mail] Remote ID content: 1.1.1.0