Grandstream Networks HT503 User Manual page 41

Enable UPnP
Reply to ICMP on WAN
Port
WAN Side HTTP/Telnet
Access
White list for WAN
side
NATed traffic. Example: if 128 is configured, there will be at least 128kbps
limited for internal system, signaling and NATed traffic. Voice or RTP stream
will never be limited. See figure 3.
When set to "Yes", the HT503 acts as an UPnP gateway for your UPnP
enabled applications. UPnP = "Universal Plug and Play"
When set to "Yes", the HT503 responds to the PING command from other
computers, but is also made vulnerable to DOS attacks. Default is No.
When set to "Yes", the user can access the web configuration pages through
the WAN port, instead of through the PC port. Warning: this configuration is
less secure than the default option. Default is No.
List the IP address or IP range in the White list
Note for list Rules:
HTTP/telnet:
Case 1: WAN side telnet/HTTP access enabled
- If white list exists, then ONLY these IP addresses are ALLOWED to web
and telnet access.
- If black list exists and white list is empty, then ONLY these IP addresses
are NOT ALLOWED to web and telnet access.
Case 2: WAN side telnet/HTTP access is not allowed:
-All addresses are NOT ALLOWED http and telnet access.
SIP/RTP:
- If both white list and black list are empty, the behavior is same as before.
- If white list exists, then ONLY these IP addresses are ALLOWED SIP/RTP
HT503 User Manual
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