\b \c{&H} will be replaced by the host name you are connecting to.
+\b \c{&P} will be replaced by the port number you are connecting to on
+the target host.
+
For example, if you enter the host name
\c{c:\\puttylogs\\log-&h-&y&m&d-&t.dat}, you will end up with files looking
like
existing SSH connection set up by an instance of GUI PuTTY. The one
special case is that PSCP and PSFTP will \e{never} act as upstreams.
+It is possible to test programmatically for the existence of a live
+upstream using Plink. See \k{plink-option-shareexists}.
+
\H{config-ssh-kex} The Kex panel
The Kex panel (short for \q{\i{key exchange}}) allows you to configure
PuTTY currently supports the following algorithms:
+\b \i{ChaCha20-Poly1305}, a combined cipher and \i{MAC} (SSH-2 only)
+
\b \i{AES} (Rijndael) - 256, 192, or 128-bit SDCTR or CBC (SSH-2 only)
\b \i{Arcfour} (RC4) - 256 or 128-bit stream cipher (SSH-2 only)