HP Ew2400 - JetDirect Print Server Administrator's Manual page 146

Examples. See the table of sample entries below:
IP Address
192.0.0.0
192.1.0.0
192.168.1.2
To add an entry into the access control list, use the IP Address and
Mask fields to specify a host, and click (check) the Save checkbox
for that entry. Then click Apply.
To delete an entry from the list, clear the Save checkbox for that
entry. Then click Apply.
To clear the entire access control list, clear all Save checkboxes,
and click Apply.
Mgmt. Protocols
This link provides access to management communications and
other protocols that affect security.
Web Mgmt.
Use this tab to manage communications with the embedded Web
server from Web browsers. This tab appears only for full-featured
print servers.
Secure, encrypted Web-based communication is provided through
the Secure HTTP (HTTPS) protocol. If configured to require
HTTPS, the embedded Web server routes HTTPS communications
through port 443, the well-known port for HTTPS traffic. Although
ports 80, 280, or 631 continue for Internet Printing Protocol (IPP)
use, other non-secure communications (HTTP) are redirected to
HTTPS. Redirection of your browser to use HTTPS may be
transparent depending on your browser's capabilities.
By factory default, the print servers are configured to allow HTTPS
or HTTP.
ENWW
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 146