Challenges of VPN and Satellite
maintain their orbit just a little more than 23,000 miles above
the earth. Even at speeds approaching the speed of light, there
is a delay (measured in milliseconds) as data travels up to the
satellite and back down to earth. These unavoidable end-to-end
propagation delays range anywhere between 550ms-650ms for the
iDirect based Mobilsat Enterprise ISP network,
and 700ms-900ms for the HughesNet network.
These delays present a special
technical challenge to satellite users who need to secure their
data with a Virtual Private Network (VPN).While these delays do
not affect web surfing or email performance, VPN applications
that were not specifically designed for satellite networks will
still work. Most "off-the-shelf" VPN applications such
as Nortel, Cisco, Checkpoint, Netscreen, etc. typically do not
perform very well over HughesNet due to the higher inherent latency.
The higher the latency is, the
more impact you will see in overall network performance when using
an IPsec VPN. Using an IPSEC VPN application over HughesNet will
cause a 40%-75% reduction of the throughput of the connection.
Using an IPSEC VPN over iDirect will still cause a significant
reduction in performance, but not as bad.
Mobil Satellite Technologies
offers a very simple, proven solution to overcome latency
problems when using VPN over higher latency satellite networks.
Networks Bandit 2
Here for more information
|For use with any satellite
platform, provides application layer VPN encryption without
compromising satelite performance. Usually the most cost effective
solution for up to 5 teleworkers.