D-Link DWC-1000 Руководство пользователя для ревизии A1 _версия ПО 4.4.1.x_ онлайн [236/368] 172917

D-Link DWC-1000 User Manual 236

Section 8 - Security

AlGs

Path:Security>Firewall>ALGs

ApplicationLevelGateways(ALGs)aresecuritycomponentsthatenhancetherewallandNATsupportofthis

controller to seamlessly support application layer protocols. In some cases enabling the ALG will allow the

rewalltousedynamicephemeralTCP/UDPportstocommunicatewiththeknownportsaparticularclient

application(suchasH.323orRTSP)requires,withoutwhichtheadminwouldhavetoopenlargenumberofports

to accomplish the same support. Because the ALG understands the protocol used by the specic application

thatitsupports,itisaverysecureandecientwayofintroducingsupportforclientapplicationsthroughthe

controller’s rewall.

1. Click Security > Firewall > ALGs tab.

2. Toggletheprotocol(s)toON that you want to allow through the controller.