Chapter 33 System
NXC5200 User’s Guide
477
33.6 WWW Overview
The following figure shows secure and insecure management of the NXC coming in
from the WAN. HTTPS and SSH access are secure. HTTP, Telnet, and dial-in
management access are not secure.
Figure 219
Secure and Insecure Service Access From the WAN
33.6.1 Service Access Limitations
A service cannot be used to access the NXC when:
1
You have disabled that service in the corresponding screen.
2
The allowed IP address (address object) in the Service Control table does not
match the client IP address (the NXC disallows the session).
3
The IP address (address object) in the Service Control table is not in the allowed
zone or the action is set to Deny.
4
There is a firewall rule that blocks it.
Zone
Select ALL to allow or prevent DNS queries through any zones.
Select a predefined zone on which a DNS query to the NXC is allowed or
denied.
Action
Select Accept to have the NXC allow the DNS queries from the specified
computer.
Select Deny to have the NXC reject the DNS queries from the specified
computer.
OK
Click OK to save your customized settings and exit this screen.
Cancel
Click Cancel to exit this screen without saving
Table 183
Configuration > System > DNS > Add Service Control Rule (continued)
LABEL
DESCRIPTION