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Originally Posted by Lakegeezer
How does the Wildblue satellite system work for uploaded traffic? I worked with one system that used dial-up for transmit and the satellite for receive. As a result, there were two IP addresses and the IPSEC VPN would not connect. More modern SSL style VPNs may work fine, but I haven't played with one yet. Roundtrip latency through a satellite link is about 1/4 second.
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All modern systems are send/recieve from the dish, no dialup, so asymetrical routing issues with having two IPs will not be an issue any longer. Round trip times are closer to (or above) 500 milliseconds (1/2 second). The math is easy for the latency: average 45K miles up and down and back again for 90k miles round trip. this is not including the distance the packet must travel on the Internet backbone. Speed of light is ~180,000 per second so you get 500 milliseconds.
This is REALLY slow in computer terms. For comparison, good cable Interet will give you sub 20 millisecond latency and 56K dialup modem will be around 100 milliseconds.
Here is a good FAQ from a provider:
http://www.spidersat.net/faqs_ip_ove....htm#FAQItem10