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UPnP
Expert > NAT Forwarding > UPnP
Universal plug-and-play (UPnP) is a set of networking protocols which enables network
devices to communicate and automatically establish working configurations with each
other, such as computers, printers, mobile devices etc.
It’s typically used for data sharing, communications and entertainment p urposes,
although sometimes not preferred due to security concerns. Some devices may require
UPnP to be enabled to function properly. Use the switch to set UPnP to active or inactive,
according to your requirements.
ALG
Expert > NAT Forwarding > ALG
Application Level Gateway (ALG) settings are advanced functions that can resolve
issues where services are disrupted by the firewall. Each ALG module is a security
component that augments the firewall. Services such as VPNs or Virtual Servers may
require ALG modules enabled. By default all ALG modules are inactive. Use the
switches to enable any ALG module required. ALG Settings are recommended for
expert users only.