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On Monday 27 Feb 2017 16:49:42 Andrew Savchenko wrote: |
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> On Thu, 23 Feb 2017 20:10:05 +0000 Mick wrote: |
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> > I am trying to understand why an ssh server keeps dropping the connection |
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> > when using openssh on Linux straight after a successful authentication, |
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> > but it works fine with Filezilla in MSWindows. |
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> |
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> [...] |
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> |
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> > I am guessing all this respawning probably triggers some DDoS protection |
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> > limit on the server and it disconnects the client. Have you observed |
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> > anything similar and would you know why Linux fails, but MSWindows works |
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> > as it should? |
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> I use HPN for years and connect to hundreds of servers, most of |
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> them are without HPN support. I have no problems so far. But HPN is |
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> unofficial and it may trigger problems. Maybe this is a bug in HPN, |
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> maybe a server's custom protection. |
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> |
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> Try to report this on bugzilla for openssh maintainers. |
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> |
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> Best regards, |
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> Andrew Savchenko |
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Thanks Andrew, but I am not sure if it is an openssh bug or the particular |
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server SSH implementation, which I do not control and the BOFH isn't |
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particular helpful. |
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|
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It may be an SSH implementation interoperability problem. A Linux Mint PC |
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suddenly fails to connect using the latest OpenSSH version (OpenSSH_7.2p2 |
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Ubuntu-4ubuntu2.1, OpenSSL 1.0.2g 1 Mar 2016) because the server does not |
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appear to return a list of authentication methods as it should. |
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|
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The Gentoo PCs fail to connect because it seems the client switches from |
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single to multithreaded CTR transaction and the SSH server then becomes over- |
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protective. |
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|
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I've posted in OpenSSH M/L about the Linux Mint behaviour, but had no |
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responses. |
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-- |
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Regards, |
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Mick |
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