Can you disable the Ctrl-S (XOFF) keystroke in Putty?

Solution 1:

Don't know about Putty, but you can use:

stty -ixon

on remote host, to disable START/STOP signals.

Solution 2:

The PuTTY solution:

1. before creating the session go navigate to Connection->SSH->TTY in the list.
2. in the "Mode" dropdown box, select IXON (nb: as of version 0.60, this list is not alphabetically ordered)
3. put "0" (zero) as the value of IXON.

Works as a charm, even if you open up a "GNU screen" on top of it, SSH to another host, or "su" to another user

If you're using GNU Bash, ctrl-S should allow you now to do a forward-search-history (aka: i-search)

You can see the difference in the output of "stty -a | grep -o ".ixon": With putty configured it prints "-ixon", without " ixon"