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sysadmin
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network
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tunnels
document updated 13 years ago, on Jun 11, 2011
network traversal
it normally uses
IP protocol 50 (ESP), but that can be moved to UDP port 4500
if both sides support
NAT-T
.
the stock Windows client
detailed analysis of pros/cons
it's a rather simplified client
third-party GUI to make it easier to config
StrongSWAN
writeups on getting it to interoperate with Windows
there
are
third-party Windows clients
Shrew VPN Client