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M2M Cellular Gateway
Index skipping is used to reserve slots for new function insertion, when required.
5.1.h Options
There are some useful functions in this page. "Stealth Mode" lets gateway not to respond to port
scans from the WAN so that makes it less susceptible to discovery and attacks on the
Internet. "SPI" enables gateway to record the packet information like IP address, port address,
ACK, SEQ number and so on while they pass through the router. And the gateway checks every
incoming packet to detect if this packet is valid. "Discard Ping from WAN" makes any host on the
WAN side can`t ping this product. It means this device won`t reply any ICMP packet from Internet.
"Remote Administrator Hosts" enables only the LAN users to browse the web‐based utility to
perform administration task locally. This feature also enables you to perform administration task
also from a remote host. If this feature is enabled, only the specified IP address can perform
remote administration. If the specified IP address is 0.0.0.0, any host can access web‐based utility
to perform administration task. You can use subnet mask bits '/nn' notation to specified a group
of trusted IP addresses for example, '10.1.2.0/24'.
Firewall Options
Please check the "Enable" box to activate the functions needed.
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