I am seeing an odd issue with two of our externally facing systems where access over the web on HTTPS works, and uses the correct COMODO certificates, but internally it is using self-signed certificates.
The command being used to test this is:
openssl s_client -showcerts -connect wiki.domain.com:443
Externally, this returns:
Server certificate subject=/OU=Domain Control Validated/OU=EssentialSSL Wildcard/CN=*.domain.com issuer=/C=GB/ST=Greater Manchester/L=Salford/O=COMODO CA Limited/CN=COMODO RSA Domain Validation Secure Server CA
Internally (from the local subnet) I see:
Server certificate subject=/C=US/ST=Somewhere/L=Somecity/O=CompanyName/OU=Organizational Unit Name (eg, section)/CN=Common Name (eg, YOUR name)/emailAddress=Email Address issuer=/C=US/ST=Somewhere/L=Somecity/O=CompanyName/OU=Organizational Unit Name (eg, section)/CN=Common Name (eg, YOUR name)/emailAddress=Email Address
Any idea why this would be happening please? I can't figure out what's going on here.
Please ask if you need further details, am happy to provide. Thank you.