mirror of
https://github.com/sshuttle/sshuttle.git
synced 2024-11-21 23:43:18 +01:00
45 lines
1.8 KiB
ReStructuredText
45 lines
1.8 KiB
ReStructuredText
TPROXY
|
|
======
|
|
TPROXY is the only method that has full support of IPv6 and UDP.
|
|
|
|
There are some things you need to consider for TPROXY to work:
|
|
|
|
- The following commands need to be run first as root. This only needs to be
|
|
done once after booting up::
|
|
|
|
ip route add local default dev lo table 100
|
|
ip rule add fwmark {TMARK} lookup 100
|
|
ip -6 route add local default dev lo table 100
|
|
ip -6 rule add fwmark {TMARK} lookup 100
|
|
|
|
where {TMARK} is the identifier mark passed with -t or --tmark flag (default value is 1).
|
|
|
|
- The ``--auto-nets`` feature does not detect IPv6 routes automatically. Add IPv6
|
|
routes manually. e.g. by adding ``'::/0'`` to the end of the command line.
|
|
|
|
- The client needs to be run as root. e.g.::
|
|
|
|
sudo SSH_AUTH_SOCK="$SSH_AUTH_SOCK" $HOME/tree/sshuttle.tproxy/sshuttle --method=tproxy ...
|
|
|
|
- You may need to exclude the IP address of the server you are connecting to.
|
|
Otherwise sshuttle may attempt to intercept the ssh packets, which will not
|
|
work. Use the ``--exclude`` parameter for this.
|
|
|
|
- Similarly, UDP return packets (including DNS) could get intercepted and
|
|
bounced back. This is the case if you have a broad subnet such as
|
|
``0.0.0.0/0`` or ``::/0`` that includes the IP address of the client. Use the
|
|
``--exclude`` parameter for this.
|
|
|
|
- You need the ``--method=tproxy`` parameter, as above.
|
|
|
|
- The routes for the outgoing packets must already exist. For example, if your
|
|
connection does not have IPv6 support, no IPv6 routes will exist, IPv6
|
|
packets will not be generated and sshuttle cannot intercept them::
|
|
|
|
telnet -6 www.google.com 80
|
|
Trying 2404:6800:4001:805::1010...
|
|
telnet: Unable to connect to remote host: Network is unreachable
|
|
|
|
Add some dummy routes to external interfaces. Make sure they get removed
|
|
however after sshuttle exits.
|