To: ssh_exchange_identification: Connection Closed

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Can you ssh to some other system and ssh in turn from there?  -- hugh

At 02:11 PM 8/12/03 -0400, you wrote:
>I have been getting the following error on my Debian server running Open
>SSH 3.4p1-1
>
>ssh_exchange_identification: Connection closed by remote host
>
>
>Now, here's the interesting thing, it only happens from certain systems.
>In particular, it happens from my office where the IS Dept. folks, in
>their wisdom, have installed some kind of NT firewall. And, it happens
>from bumpy.braille.uwo.ca, and I have no idea what kind of firewalling
>may be going on between Bumpy and the external net at uwo.ca.
>
>But, it doesn't happen from my newly installed Red Hat Severn system
>running on my portable machine, and it doesn't happen from
>speakup.octothorp.org.
>
>It gets even more interesting:
>
>My office machine and my portable are both running fresh installs of Red
>Hat Severn. So, they should perform the same, right? Unless some
>intervening element is changing things?
>
>I believe something is being stripped. If I do -v -v I get:
>
>debug3: key_read: missing whitespace
>debug3: key_read: missing whitespace
>debug3: key_read: missing whitespace
>debug3: key_read: missing whitespace
>debug3: key_read: missing whitespace
>debug3: key_read: missing whitespace
>debug3: key_read: missing whitespace
>debug2: key_type_from_name: unknown key type '-----END'
>debug3: key_read: missing keytype
>debug1: identity file /home/janina/.ssh/id_dsa type 2
>ssh_exchange_identification: Connection closed by remote host
>
>Let me repeat, this is from the same Red Hat installation that is on my
>portable which has no problems. So, I'm quite convinced something
>inbetween--very probably some kind of filtering rule on a firewall--is
>doing something to the "white space."
>
>Given that I can't make changes on intervening systems, what's the
>resolution? How do I downscale the security checking without
>compromising myself too much?
>
>
>_______________________________________________
>Speakup mailing list
>Speakup at braille.uwo.ca
>http://speech.braille.uwo.ca/mailman/listinfo/speakup





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