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Could not connect to OCSP responder error

Comments

8 comments

  • cPanelMichael
    AH01974: could not connect to OCSP responder

    Hi Scott, I don't see any recent outage reports from Comodo on their
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  • Scott Galambos
    Its constantly happening. Never stops. 3 times or so a minute.
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  • Scott Galambos
    This works fine and resolves fine for your info. I have a bunch of domains that are password protected by apache. Not sure if thats it. server: dig ocsp.comodoca.com @MYDNS_IP +short ocsp.comodoca.com.edgesuite.net. a652.dscb.akamai.net. 184.84.243.64 184.84.243.42
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  • cPanelMichael
    Hello Scott, Do you have any firewall rules that could potentially block traffic to or from the Comodo OCSP IP addresses? Thank you.
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  • Scott Galambos
    No, no rules. And no problem telneting to 184.84.243.x either. I added 184.84.243.0/24 to csf.allow anyway to be safe.
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  • cPanelMichael
    No, no rules. And no problem telneting to 184.84.243.x either. I added 184.84.243.0/24 to csf.allow anyway to be safe.

    Could you open a
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  • WorkinOnIt
    I had the same repetitive error last year and opened a support ticket (8873739 - SSL stapling error) and had a very helpful tech who informed me it was because IPV6 was enabled on my network, but hadn't been configured in the server - Since I am not using IPV6, I disabled it. I don't know if this is the same issue you have, but I was able to solve it via the following steps (I am not suggesting you do this, unless it's the same issue you are facing) 1) add to etc/sysctl.conf net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 Then execute with # sysctl -p 2) rebuild Apache # netstat -tpln |grep http 3) reboot server Problem was solved.
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  • Usif Nasirov
    No, no rules. And no problem telneting to 184.84.243.x either. I added 184.84.243.0/24 to csf.allow anyway to be safe.

    your problem maybe solved)) but I want to leave note for someone who need to help. I did ping is everything is ok. ping successfully. just I systemctl stop csf /scripts/updatesigningkey /scripts/mainipcheck That's all, problem solved. Maybe someone has the similar problem.
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