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Apparently when plink or PuTTY connects to a netscreen firewall with a remote command such as "save", the session hangs after "Started session".
Interactive connections with no command (with both plink and PuTTY) work fine.
Some other clients (e.g. SecureCRT) are fine, but OpenSSH also has trouble:
bash-2.05a# ssh 256.256.256.256 -l netscreen -v -v -v save OpenSSH_2.9 FreeBSD localisations 20011202, SSH protocols 1.5/2.0, OpenSSL 0x0090601f ... firstname.lastname@example.org's password: debug3: clear hostkey 0 debug3: clear hostkey 1 debug1: Sending command: save debug1: Entering interactive session. Disconnecting: protocol error: rcvd type 15 debug1: Calling cleanup 0x8059d60(0x0)
(These firewalls claim a version string of SSH-1.5-SSH Protocol Compatible Server SCS 2.0. All connections are therefore SSH-1.)
We've had one report that this applies to Netscreen 4.x and previous, but that it works fine in newer versions (as well as SSH-2).