ZyXEL Communications ZyXEL ZyAIR 100 User Manual

Page 508

ZyWALL 10~100 Series Internet Security Gateway

40-2

Monitor

Table 40-1 Menu 27.2: SA Monitor

FIELD DESCRIPTION EXAMPLE

This is the security association index number.

Name

This field displays the identification name for this VPN policy. This name is
unique for each connection where the secure gateway IP address is a public
static IP address.

When the secure gateway IP address is 0.0.0.0 (as discussed in the last
chapter), there may be different connections using this same VPN rule. In this
case, the name is followed by the remote IP address as configured in Menu
27.1.1. – IPSec Setup. Individual connections using the same VPN rule may
be terminated without affecting other connections using the same rule.

Taiwan

Encap.

This field displays Tunnel mode or Transport mode. See previous for
discussion.

Tunnel

IPSec

ALgorithm

This field displays the security protocols used for an SA. ESP provides
confidentiality and integrity of data by encrypting the data and encapsulating it
into IP packets. Encryption methods include 56-bit DES and 168-bit 3DES.
NULL denotes a tunnel without encryption.

An incoming SA may have an AH in addition to ESP. The Authentication
Header provides strong integrity and authentication by adding authentication
information to IP packets. This authentication information is calculated using
header and payload data in the IP packet. This provides an additional level of
security. AH choices are MD5 (default - 128 bits) and SHA -1(160 bits).

Both AH and ESP increase ZyWALL processing requirements and
communications latency (delay).

ESP DES

MD5

Select

Command

Press [SPACE BAR] to choose from Refresh, Disconnect, None, Next Page,
or Previous Page and then press [ENTER]. You must select a connection in
the next field when you choose the Disconnect command. Refresh displays
current active VPN connections. None allows you to jump to the “Press
ENTER to Confirm…” prompt.

Select Next Page or Previous Page to view the next or previous page of rules
(respectively).

Refresh

Select

Connection

Type the VPN connection index number that you want to disconnect and then
press [ENTER].

When you have completed this menu, press [ENTER] at the prompt “Press ENTER to Confirm…” to save
your configuration, or press [ESC] at any time to cancel.