Sitecom WLM-2601 User Manual page 38

Firewall
The Broadband router provides extensive firewall protection by restricting connection
parameters, thus limiting the risk of hacker attacks, and defending against a wide array
of common Internet attacks. However, for applications that require unrestricted access to
the Internet, you can configure a specific client/server as a Demilitarized Zone (DMZ).
ACL
This page is used to IP addresses for Access Control. If ACL is enabled only the IP
Addresses that are in the ACL Table can access the CPE.