Prestige 2302 Support Notes
What is DDNS wildcard?
Some DDNS servers support the wildcard feature which allows the *.yourhost.dyndns.org hostname to be mapped to the same IP address as yourhost.dyndns.org. This feature is useful when there are multiple internal servers and you want users to be able to use addresses such as www.yourhost.dyndns.org and still reach your server.
Does the Prestige support DDNS wildcard?
Yes. the Prestige supports DDNS wildcard that WWW.DynDNS.ORG supports. To use wildcard, simply enter yourhost.dyndns.org in the Host field in SMT menu 1.1.
Can VPN tunnels still work on a Prestige using SUA?
Yes, the Prestige's SUA still works in IPsec ESP Tunneling mode. When packets go through the Prestige, SUA will translate the source IP address and source port for the host. To forward IPsec packets, the Prestige SUA can identify ESP packets with a protocol number of 50. Thus SUA will replace the source IP address of the IPsec packet with the router's WAN IP address. However, SUA will not change the source port of the UDP packets which are used for key managements. Since the remote gateway checks the actual source port during connection negotiation, SUA should not change the original source port.
How do I set up my Prestige to route IPsec packets over SUA?
For outgoing IPsec tunnels, no extra setting is required. To forward packets through the inbound IPsec ESP tunnel, you must configure the 'Default' server set in SMT menu 15. It is because SUA makes your LAN appear as a single device to the outside world. LAN users are invisible to outside users. So, to make an internal server accessible from the outside, you must specify the service port and the LAN IP address of the internal server in SMT menu 15. Thus Prestige is able to forward incoming packets to the requested service behind SUA and the outside users can access the server using the Prestige's WAN IP address. You must configure the internal IPSec gateway as the default server (unspecified service port) in SMT menu 15.
VoIP FAQ
What is Voice over IP?
Voice over IP (VoIP) is an emerging technology based on the open IEEE standards. VoIP refers to the transmission of voice data over the Internet. Various protocols are available for voice transport. The most commonly used are SIP and H.323.
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