pam_radius_auth delay

Steve Phillips steve at
Sat Apr 29 02:58:53 CEST 2017

Ahh, wait - bad form replying to myself I know, but realise what you just mentioned was the host generating the query.

I'll look into this and ensure there is a PTR entry, but I'm pretty sure there was.

Of note though, surely the system would just use the 'hostname' to populate this rather than trying to do a PTR lookup?


On 29/04/2017, 10:54 AM, "Freeradius-Users on behalf of Steve Phillips" < at on behalf of steve at> wrote:

    Hey Matthew,
    The delay happens if I use an IP address or a FQDN, and whether the FQDN is in the DNS system (of which there are two servers on the same subnet/switch) or if it is in my /etc/hosts file. This was one my original thoughts as well as generally delays like this are due to some form of timeout - but there doesn’t seem to be anything in the logs indicating a timeout.
    On 28/04/2017, 8:10 PM, "Freeradius-Users on behalf of Matthew Newton" < at on behalf of mcn4 at> wrote:
        Given that between these two log lines
        On Fri, Apr 28, 2017 at 04:35:21PM +1000, Steve Phillips wrote:
        > Apr 28 16:09:40 bastion sshd[9197]: pam_radius_auth: ignore last_pass, force_prompt set
        > Apr 28 16:10:00 bastion sshd[9197]: pam_radius_auth: Sending RADIUS request code 1
        there is a call to add a RADIUS attribute with details of the
        remote host the user is connecting from, I would suspect that
        there is a missing reverse DNS entry for it.
        Matthew Newton, Ph.D. <mcn4 at>
        Systems Specialist, Infrastructure Services,
        I.T. Services, University of Leicester, Leicester LE1 7RH, United Kingdom
        For IT help contact helpdesk extn. 2253, <ithelp at>
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