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Help with dropping ssh though linux router


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#1 pomtom44

pomtom44

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Posted 28 October 2017 - 12:15 AM

Hey all 
Back again with yet another networking question
(Sorry if this is in the wrong location, is a bit of a mix between linux, and networking)

This time there is the setup 
I have a linux router, doing portforwarding using IPtables. 
External client logs into internal server using ssh on routers external IP

What im looking for is a graceful way to close the connection 
Not block it, just close it. 
Currently I am adding a forward drop to the top of the tables list, and that breaks the connection, but it doesn't drop it properly, and as soon as I remove the rule, the connection just pops back up

What im wanting is for when I drop the connection, the client drops properly and has to re connect to the server, rather than just auto connecting 
(If that makes any sense?)

And yes I know there is a timeout, (putty will timeout if no connection is made within a certain time), but I want it to work for everything, even if the timeout isn't set on the client side

Thanks again for any help, and fingers crossed there is a good way of doing this



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