1.7 breaks SSH to some servers

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xinmpg

Posts: 4
Joined: Thu Aug 14, 2014 1:46 am

Post by xinmpg » Thu May 25, 2017 6:18 pm
Hello,

I recently auto-upgraded Viscosity to 1.7. I immediately noticed I could no longer ssh to at least one specific host over openvpn. The client will just hang indefinitely (longer than I've had the patience to wait, so at least 2-3 minutes. I was trying to SSH to the IP of the interface OpenVPN creates for the other end of the p2p tunnel. If I ssh'd from a whitelisted IP to its public IP, it worked fine (this is an ec2 host)


Pretty quickly into initial troubleshooting I realized this happened after upgrading to 1.7. I downgraded to 1.6.8 and can connect OK again.


The server eventually reports this in /var/log/secure:
May 25 07:43:16 xxxxx sshd[24047]: Bad protocol version identification '' from 10.10.10.2

The client is OS X 10.12.4, OpenSSH_7.4p1, LibreSSL 2.5.0
Server is CentOS 6.8, OpenSSH_5.3p1, OpenSSL 1.0.1e-fips 11 Feb 2013

Let me know if i can get any kind of logs or useful debug info.

James

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Posts: 2313
Joined: Thu Sep 04, 2008 9:27 pm

Post by James » Thu May 25, 2017 6:20 pm
Hi xinmpg,

Please see:
https://www.sparklabs.com/forum/viewtop ... 2329#p6949

Cheers,
James
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