Re: [BackupPC-users] heads up for newer versions of openssh

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"General list for user discussion, questions and support" <backuppc-users AT lists.sourceforge DOT net>

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Thu, 12 May 2016 10:21:26 -0400

Joe Konecny

May 11, 2016 at 2:46 PM

I found after several days of wrestling that UseDNS now defaults to "no" in
newer versions of openssh. This causes a from="hostname" clause in authorized_keys
to reject the connection. You either have to... 1. use an ip address from="x.x.x.x"
2. set "UseDNS yes" in sshd_config or 3. omit "from=" altogether. Hope this helps
someone.

Unless you are using DNSSEC broadly (unless you know all about it, you aren't), depending on DNS for security is a bad idea. This is a positive change, but a bummer that it's bitten you.

danno

--
Dan Pritts

ICPSR Computing & Network Services

University of Michigan

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