your ircd does not support ssl client certificates - SERP Analysis

https://forums.unrealircd.org/viewtopic.php?t=8667

https://github.com/charybdis-ircd/charybdis/issues/235

https://www.reddit.com/r/irc/comments/t8jtwj/help_with_setting_up_ssl_on_server/

https://bbs.archlinux.org/viewtopic.php?id=145835

https://www.unrealircd.org/docs/SSL/TLS

https://community.letsencrypt.org/t/ircd-hybrid-ssl-setup-explanation/12651

https://docs.inspircd.org/tutorials/enable-tls/

https://forums.mirc.com/ubbthreads.php/topics/271260/ssl-expiring

https://unix.stackexchange.com/questions/77439/ngircd-xchat-ssl-issues

https://ubuntuforums.org/archive/index.php/t-1486054.html

https://github.com/matrix-org/matrix-appservice-irc/issues/747

https://forums.mirc.com/ubbthreads.php/topics/238775/mirc-client-certificate-support

https://serverfault.com/questions/308918/x509-authentication-for-ssl-irc

https://colinjs.com/IRCDSS_Help_1_3/IRCDSS.htm

https://wiki.anope.org/index.php/2.0/Configuration

https://bugs.quassel-irc.org/projects/1/wiki/Client-Core_SSL_support

https://libera.chat/guides/certfp

https://ahf.me/articles/2013/09/14/enhancing-ssl-security-for-irc-dane-support/

https://www.oftc.net/NickServ/CertFP/

https://wiki.znc.in/Signed_SSL_certificate

https://blog.wxm.be/2021/05/22/sasl-certfp-libera.html

https://help.codeux.com/textual/Using-CertFP.kb

https://news.ycombinator.com/item?id=11492038

https://old.freenode.net/kb/answer/certfp

https://www.postgresql.org/docs/current/libpq-ssl.html

https://wiki.znc.in/Cert

https://superuser.com/questions/1592584/connecting-to-a-znc-bouncer-with-hexchat-using-an-ssl-certificate

https://lug.oregonstate.edu/blog/irc_and_ssl/

https://community.letsencrypt.org/t/lets-encrypt-for-qwebirc-at-port-5000/63996

https://www.vulnscan.org/improving-irc-security-step-by-step/

https://joshcurry.co.uk/posts/irssi-connect-to-a-server-which-uses-a-self-signed-certificate/

https://wiki.ircnow.org/index.php?n=Ngircd.Ssl

https://forums.raspberrypi.com/viewtopic.php?t=243864

https://community.theforeman.org/t/restclient-sslcertificatenotverified-after-custom-cert-setup/5849

https://suchsecurity.com/using-letsencrypt-for-your-ircd.html

https://forums.gentoo.org/viewtopic-t-470653-start-0-postdays-0-postorder-asc-highlight-unrealircd.html

https://libera.chat/guides/connect

https://superuser.com/questions/1370210/weechat-only-connects-to-irc-server-with-ssl-if-ssl-verify-option-is-switched

https://www.experts-exchange.com/questions/26180094/IRC-SSL-certificate-verification.html

https://docs.aws.amazon.com/apigateway/latest/developerguide/getting-started-client-side-ssl-authentication.html

https://irssi.org/documentation/qna/certfp/

https://supernets.org/docs/ssl-client-certificates.html

https://docs.rapid7.com/metasploit/metasploitable-2-exploitability-guide

https://forums.hak5.org/topic/18016-ssl-verification-failing-on-irchak5org/

https://support.pingidentity.com/s/question/0D5Do0000191pmwKAA/followup-regarding-client-validation-problem-server-log-says-no-client-certificates-in-request

https://cloud.google.com/sql/docs/postgres/configure-ssl-instance

https://cacert-support.cacert.narkive.com/di54gZW2/website-form-email-unable-to-verify-the-first-certificate-error-when-used-for-irc-ssl

https://support.ptc.com/help/windchill/r13.0.1.0/en/Windchill_Help_Center/WCAdvDeployGuide/WCAdvDepAuth_ConfigAltAuth_HTTPSClientAuthentication.html