ZyXEL Communications ZyXEL ZyWALL P1, User Manual

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ZyWALL P1 User’s Guide
192 Chapter 13 Remote Management
4 The IP address in the Secure Client IP Address field does not match the client IP
address. If it does not match, the ZyWALL will disconnect the session immediately.
5 There is already another remote management session with an equal or higher priority
running. You may only have one remote management session running at one time.
6 There is a firewall rule that blocks it.
13.1.2 Remote Management and NAT
When NAT is enabled:
• Use the ZyWALL’s WAN IP address when configuring from the WAN.
• Use the ZyWALL’s LAN IP address when configuring from the LAN.
13.1.3 System Timeout
There is a default system management idle timeout of five minutes (three hundred seconds).
The ZyWALL automatically logs you out if the management session remains idle for longer
than this timeout period. The management session does not time out when a statistics screen is
polling. You can change the timeout period in the
System screen.
13.2 Introduction to HTTPS
HTTPS (HyperText Transfer Protocol over Secure Socket Layer, or HTTP over SSL) is a web
protocol that encrypts and decrypts web pages. Secure Socket Layer (SSL) is an application-
level protocol that enables secure transactions of data by ensuring confidentiality (an
unauthorized party cannot read the transferred data), authentication (one party can identify the
other party) and data integrity (you know if data has been changed).
It relies upon certificates, public keys, and private keys (see Chapter 10 on page 151 for more
information).
HTTPS on the ZyWALL is used so that you may securely access the ZyWALL using the web
configurator. The SSL protocol specifies that the SSL server (the ZyWALL) must always
authenticate itself to the SSL client (the computer which requests the HTTPS connection with
the ZyWALL), whereas the SSL client only should authenticate itself when the SSL server
requires it to do so (select
Authenticate Client Certificates in the REMOTE MGMT ,
WWW screen). Authenticate Client Certificates is optional and if selected means the SSL-
client must send the ZyWALL a certificate. You must apply for a certificate for the browser
from a CA that is a trusted CA on the ZyWALL.
Please refer to the following figure.
1 HTTPS connection requests from an SSL-aware web browser go to port 443 (by default)
on the ZyWALL’s WS (web server).