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I see below errors in log
Server certificate authentication failed for EDL name<TEST-PASS> ip/fqdn<https://abc.com/feeds/TEST-HC-PASS> Common name of
the server certificate <abc.com> reason(26)<unsupported certificate purpose>
2018-02-14 04:00:29.351 -0800 Error: ebl_fetch_url_from_remote_libcurl(pan_cfg_ebl.c:1783): curl_easy_perform failed, Err(60):Peer certificate cannot be authenticated with given CA certificates
2018-02-14 04:00:29.352 -0800 Error: ebl_fetch_url_from_remote_libcurl(pan_cfg_ebl.c:1865): EDL entry(0x1d24000, 0xf0b3400, 0x30fe5600 vsys1/TEST-PASS, 1, 1 ip) Cert validation failed for EDL name:TEST-HC-PASS
you might have forgotten to add the SAN section in the certificate (HostName) to have the same value as the CN. Almost all SSL Client libraries (PANOS EDL client between them) validate the DNS hostname against the SAN section instead of the CN.
(as per RFC 6125, published in '2011 the validator must check SAN first, and if SAN exists, then CN should not be checked)
@xhoms I added the Host Name and Ip fields but it still doesn't work. However i noticed below message in system logs.
event id: tls-edl-auth-failure
Reason: "unsupported certificate purpose"
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