HP 680n - JetDirect Print Server Administrator's Manual page 149

Access Control
Use this tab to display the Access Control List (ACL) on the
HP Jetdirect print server. An access control list (or host access list)
specifies individual host systems, or networks of host systems, that
will be allowed to access the print server and the attached network
device. Up to 10 entries can be included on the list. If the list is
empty (no hosts are listed), any supported system can access the
print server.
CAUTION
Note
Host systems are specified by their IP addresses or network
number. If the network contains subnets, an address mask may be
used to identify whether the IP address designates an individual
host system or a group of host systems.
Examples. See the table of sample entries below:
IP Address
192.0.0.0
192.1.0.0
192.168.1.2
ENWW
Use caution when using this feature. You may lose
your ability to communicate with the HP Jetdirect
print server if your system is not properly specified
in the list, or access through HTTP is disabled.
For use of the host access list as a security feature,
see Chapter 7.
By default, hosts with HTTP connections (for
example, through the embedded Web server or IPP
-- the Internet Printing Protocol) are allowed access
to the print server regardless of access control list
entries. To disable access by HTTP hosts, clear the
checkbox at the bottom of the list.
Mask Description
255.0.0.0 Allow all hosts with network number 192.
255.1.0.0 Allow all hosts on network 192, subnet 1.
Allow the host with IP address 192.168.1.2.
The mask 255.255.255.255 is assumed and is
not required.
Using the Embedded Web Server 149