Bugzilla – Attachment 2674 Details for
Bug 2405
Description of UseDNS option is not accurate
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[patch]
Document UseDNS better
usednsdoc.diff (text/plain), 875 bytes, created by
Damien Miller
on 2015-07-17 13:46:38 AEST
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Description:
Document UseDNS better
Filename:
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Creator:
Damien Miller
Created:
2015-07-17 13:46:38 AEST
Size:
875 bytes
patch
obsolete
>Index: sshd_config.5 >=================================================================== >RCS file: /cvs/src/usr.bin/ssh/sshd_config.5,v >retrieving revision 1.206 >diff -u -p -r1.206 sshd_config.5 >--- sshd_config.5 10 Jul 2015 06:21:53 -0000 1.206 >+++ sshd_config.5 17 Jul 2015 03:45:50 -0000 >@@ -1494,11 +1494,20 @@ For more details on certificates, see th > .It Cm UseDNS > Specifies whether > .Xr sshd 8 >-should look up the remote host name and check that >+should look up the remote host name, and to check that > the resolved host name for the remote IP address maps back to the > very same IP address. >-The default is >-.Dq no . >+.Pp >+If this option is set to >+.Dq no >+(the default) then only addresses and not host names may be used in >+.Pa ~/.ssh/known_hosts >+.Cm from >+and >+.Xr sshd_config 5 >+.Cm Match >+.Cm Host >+directives. > .It Cm UseLogin > Specifies whether > .Xr login 1
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