A-Link WNAPc, User Manual

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Keep Alive HSPA - Advanced
Screen snapshot – WAN Interface Setup – GSM 3.5G – Advanced
Item Description
Advanced You can modify keep alive HSPA settings manually.
IP IP address for ping. It is recommended to use IP address always
available.
Ping Interval Interval time between pings. Choose between 1 to 7 seconds
depending of your 3G modem.
Packet Size Packet size for ping.
3.3.14 Firewall - Port Filtering
Entries in this table are used to restrict certain types of data packets from your
local network to Internet through the Gateway. Use of such filters can be
helpful in securing or restricting your local network.
Screen snapshot – Firewall - Port Filtering
Item Description
Enable Port Filtering Click to enable the port filtering security function.
Port Range
Protocol To restrict data transmission from the local network on certain ports,
fill in the range of start-port and end-port, and the protocol, also put
your comments on it.