On Monday, October 5, 2020 8:24:09 PM PDT Robert Edmonds wrote: > Paul Vixie wrote: > > ssh gets hinky when i connect from a server whose PTR is "servfail" > > (dnssec > > "bogus") > > Unless you're using host-based authentication or the from= option with a > hostname pattern in an authorized_keys file, you can set "UseDNS no" in > the sshd config file, or upgrade to OpenSSH 6.8p1 or later where "UseDNS > no" is the default.
it's this way on purpose, not only a default. port knockers need PTR's here. -- Vixie @FSI
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