6 id type and content – ZyXEL Communications ZyXEL ZyWALL P1 User Manual
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ZyWALL P1 User’s Guide
Chapter 9 VPN Screens
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9.6 ID Type and Content
With aggressive negotiation mode (see
), the ZyWALL identifies
incoming SAs by ID type and content since this identifying information is not encrypted. This
enables the ZyWALL to distinguish between multiple rules for SAs that connect from remote
IPSec routers that have dynamic WAN IP addresses. Telecommuters can use separate
passwords to simultaneously connect to the ZyWALL from IPSec routers with dynamic IP
addresses (see
for a telecommuter configuration example)
Note: Regardless of the ID type and content configuration, the ZyWALL does not
allow you to save multiple active rules with overlapping local and remote IP
addresses.
With main mode (see
), the ID type and content are encrypted to
provide identity protection. In this case the ZyWALL can only distinguish between up to 12
different incoming SAs that connect from remote IPSec routers that have dynamic WAN IP
addresses. The ZyWALL can distinguish up to 12 incoming SAs because you can select
between three encryption algorithms (DES, 3DES and AES), two authentication algorithms
(MD5 and SHA1) and two key groups (DH1 and DH2) when you configure a VPN rule (see
). 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.
Table 39 Local ID Type and Content Fields
LOCAL ID TYPE= CONTENT=
IP
Type the IP address of your computer or leave the field blank to have the ZyWALL
automatically use its own IP address.
DNS
Type a domain name (up to 31 characters) by which to identify this ZyWALL.
Type an e-mail address (up to 31 characters) by which to identify this ZyWALL.
The domain name or e-mail address that you use in the Content field is used for identification purposes
only and does not need to be a real domain name or e-mail address.
Table 40 Peer ID Type and Content Fields
PEER ID TYPE=
CONTENT=
IP
Type the IP address of the computer with which you will make the VPN connection
or leave the field blank to have the ZyWALL automatically use the address in the
Secure Gateway Address field.
DNS
Type a domain name (up to 31 characters) by which to identify the remote IPSec
router.
Type an e-mail address (up to 31 characters) by which to identify the remote IPSec
router.