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quicktun for Debian
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Below you can find some sample use case for quicktun.
Scenario:
Host1 behind NAT, not publicly reachable.
Host2 having public reachable address.
Configuration on Host1:
auto tun0
iface tun0 inet static
address 10.0.0.1 # local address of Host1
pointopoint 10.0.0.2 # this will be "local" address of Host2
netmask 255.255.255.255 # self explanatory
qt_remote_address <some.real.ip> # put here real address of machine that will act as server
qt_local_address 0.0.0.0 # you can specify real address of Host1 or just use 0.0.0.0 to bind to whatever
qt_tun_mode 1 # we're using TUN mode
qt_protocol nacltai # and NACLTAI encryption
qt_private_key bunchofrandomchars # SECRET part of keypair output from Host1
qt_public_key bunchofrandomchars # PUBLIC part of keypair output from Host2
Configuration on Host2:
auto tun0
iface tun0 inet static
address 10.0.0.2 # local address of Host2
pointopoint 10.0.0.1 # local address of Host1
netmask 255.255.255.255 # self explanatory
qt_remote_address 0.0.0.0 # you can specify real address of Host1 but when it's behind the NAT then just use 0.0.0.0
qt_local_address 185.115.155.253 # local public address of Host2
qt_tun_mode 1 # we're using TUN mode
qt_protocol nacltai # and NACLTAI encryption
qt_private_key bunchofrandomchars # SECRET part of keypair output from Host2
qt_public_key bunchofrandomchars # PUBLIC part of keypair output from Host1
After launching such configuration you should be able to reach Host1 from Host2 by connecting to 10.0.0.1.
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