Plink timeout and proxy under linux

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http://stackoverflow.com – I have made a script in bash which create a connection to a list of server. After each connection, if it succeed, i execute a command. Connections are under a loop. For know i use Plink. My script works, but it takes too much time when the server is unreachable. I encountered another issue when i wanted to reach a server through a proxy. I have two goals : Configure the timeout of Plink in command line under Linux to make it shorter ("FATAL ERROR: Connection timed out" takes to much time to appear). Configure the proxy configuration of Plink to have the equivalent of the SOCKS5 and proxy h (HowTos)