Vendor239 problems· 2 reviewed

Cloudflare

239 incident problems in Cloudflare environments.

Read first

When DNS changed but some clients still hit the old backendAn InfraTree guide that lays out the first signals to check, the CLI verification order, common misdiagnoses, and a safe recovery path when the DNS record is updated but resolver cache, HTTP/2 keepalive, or client pools hold on to the old target.Network3 min read When firewalld looks open but connections keep getting blockedAn InfraTree guide that lays out the first signals to check, the CLI verification order, common misdiagnoses, and a safe recovery path when a port rule appears to exist but the connection fails because of zone, runtime/permanent drift, source binding, or an upstream firewall.Network3 min read How to separate timeout and connection refused by network pathAn InfraTree guide that lays out the first signals to check, the CLI verification order, common misdiagnoses, and a safe recovery path when DNS, route, firewall, proxy, and listener states all look like the same connection failure.Network3 min read

Recommended problems

Reviewed problems first, then problems with detailed scenarios.

NETWORK-1626A DNS failover rule is ready and one check still failsOne DNS failover probe still fails after an endpoint move.ReviewedNetworkBeginner7 minFree SECURITY-1613A WAF rule is relaxed and one API call still gets 403One API call still gets 403 after relaxing a WAF rule.ReviewedSecurityBeginner7 minFree

All problems (239)

NETWORK-1626A DNS failover rule is ready and one check still failsOne DNS failover probe still fails after an endpoint move.ReviewedNetworkBeginner7 minFree SECURITY-1613A WAF rule is relaxed and one API call still gets 403One API call still gets 403 after relaxing a WAF rule.ReviewedSecurityBeginner7 minFree SECURITY-1706A WAF false positive is fixed and one request still blocksA request still blocks after the WAF false positive was fixed.SecurityBeginner8 minFree SECURITY-1627A WAF false positive is fixed and one request still failsOne request still fails after a WAF schema fix.SecurityBeginner8 minFree SECURITY-1639A WAF false positive is fixed and one request still failsOne request still fails after a schema fix.SecurityBeginner8 minFree SECURITY-1659A WAF false positive is fixed and one request still failsOne request still fails after a schema fix.SecurityBeginner8 minFree SECURITY-1669A WAF false positive is fixed and one request still failsOne request still fails after a schema fix.SecurityBeginner8 minFree SECURITY-1675A WAF false positive is fixed and one request still failsOne request still fails after the WAF rule was fixed.SecurityBeginner8 minFree SECURITY-1686A WAF false positive is fixed and one request still failsOne request still fails after the WAF rule was corrected.SecurityBeginner8 minFree SECURITY-1696A WAF false positive is fixed and one request still failsOne request still fails after the WAF rule was corrected.SecurityBeginner8 minFree SECURITY-1716A WAF false positive is fixed and one request still failsA request still fails after the WAF rule was corrected.SecurityBeginner8 minFree SECURITY-1726A WAF false positive is fixed and one request still failsA request still fails after the WAF rule was corrected.SecurityBeginner8 minFree SECURITY-1736A WAF false positive is fixed and one request still failsA request still fails after the WAF rule was corrected.SecurityBeginner8 minFree SECURITY-1746A WAF false positive is fixed and one request still failsA request still fails after the WAF rule was corrected.SecurityBeginner8 minFree SECURITY-1756A WAF false positive is fixed and one request still failsA request still fails after the WAF false positive fix.SecurityBeginner8 minFree SECURITY-1766A WAF false positive is fixed and one request still failsA request still fails after the WAF rule was corrected.SecurityBeginner8 minFree SECURITY-1776A WAF false positive is fixed and one request still failsA request still fails after the WAF false positive fix.SecurityBeginner8 minFree SECURITY-1786A WAF false positive is fixed and one request still failsA request still fails after the WAF false positive fix.SecurityBeginner8 minFree SECURITY-1796A WAF false positive is fixed and one request still failsA request still fails after the WAF false positive fix.SecurityBeginner8 minFree SECURITY-1806A WAF false positive is fixed and one request still failsA request still fails after the WAF false positive fix.SecurityBeginner8 minFree