Hi.

I had a quick troubleshooting session yesterday and it seemed that TLS.PermitedPeer was case sensitive. It might have been something else as I was doing a fairly chaotic debugging across a relatively large installation and it might have been that something else helped but I think that when I had uppercase hostname listed in TLS.PermittedPeer i was getting rejections for not allowed certificate and when I swiched to lowercase it started working.

The system is SuSE 15.4, rsyslog version is 8.2302.0-3.1 (from Rainer's OpenSUSE build repo).

As with SuSE, the TLS driver is gtls and we're of course talking TLS.Authmode="name".

The old cert was issued for uppercase hostname so the configuration reflected that but when we reissued the certificate due to old one's expiration it stopped working. It coincided with other - relatively big - changes in infrastructure so I don't have a clear confirmation that this was indeed the case but I have a suspicion and therefore I'm asking if it's possible that the name match is done case-sensitively.

Best regards,

MK

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