Control Access to the Internet
40
AC1900 Cable Modem Voice Router
4. Select ADVANCED > Security > Services.
5. Select or clear check boxes to enable or disable services.
• When firewall features are enabled, the modem router performs stateful packet
inspection (SPI) and protects against denial of service (DoS) attacks.
• When IPSec pass-through is enabled, IPSec traf
fic is forwarded. When it is disabled,
this traffic is blocked.
• When PPTP pass-through is enabled, PPTP traf
fic is forwarded. When it is disabled,
this traffic is blocked.
• When
Multicast is enabled, the modem router can pass multicasting streams through
the firewall.
• When port scan detection is enabled, the modem router can respond to
Internet-based port scans.
• When IP flood detection is enabled, the modem router can block malicious devices
that are attempting to flood devices.
• Y
ou can use the Web Features check boxes to set certain web-oriented cookies, Java
scripts, and pop-up windows to be blocked by the firewall.
• Y
ou can use the NAT ALG Status check boxes to allow NAT traversal filters for certain
application layer control and data protocols.
6. Click
the Apply button.
Your settings are saved.
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