# Certificate failure connecting to auth.__MYDOMAIN__

- Link: https://www.agilicus.com/faq/certificate-failure-connecting-to-auth-__mydomain__/
- Published: 2025-03-05T18:58:28+00:00
- Author: Don Bowman

If you see a TLS/SSL certificate when starting (or installing) the connector, it
usually indicates there is a SSL-inspecting firewall on site.

If you have a openssl installed, you can run this command:

openssl s_client -showcerts -servername auth.__MYDOMAIN__ -connect auth.__MYDOMAIN__:
443 </dev/null

It should emit something like below, note the ISRG Root X1 and the Let’s Encrypt.

    ```wp-block-code
    root@rtr:~# openssl s_client -showcerts -servername auth.agilicus.com -connect auth.agilicus.com:443 </dev/null
    CONNECTED(00000003)
    depth=2 C = US, O = Internet Security Research Group, CN = ISRG Root X1
    verify return:1
    depth=1 C = US, O = Let's Encrypt, CN = R10
    verify return:1
    depth=0 CN = auth.agilicus.com
    verify return:1
    ---
    Certificate chain
     0 s:CN = auth.agilicus.com
       i:C = US, O = Let's Encrypt, CN = R10
       a:PKEY: rsaEncryption, 2048 (bit); sigalg: RSA-SHA256
       v:NotBefore: Feb 13 09:47:07 2025 GMT; NotAfter: May 14 09:47:06 2025 GMT
    -----BEGIN CERTIFICATE-----
    MIIE8jCCA9qgAwIBAgISA8KDmAmZrQROkCo9atCLeVDYMA0GCSqGSIb3DQEBCwUA
    MDMxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQwwCgYDVQQD
    EwNSMTAwHhcNMjUwMjEzMDk0NzA3WhcNMjUwNTE0MDk0NzA2WjAcMRowGAYDVQQD
    ExFhdXRoLmFnaWxpY3VzLmNvbTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoC
    ggEBAL1IA85qUqUSo3jKR6vNgLDRqPYsriX1R7kEoiCZfeMoPnWpia70meCezHy8
    BdHs3Vhav1jLQvv3VUa+0ouh61qZMZ5daDnshdn/mgcNlvheqxC7gLBo+uRLuMDA
    96w6pm51Mo7UCwj+/CDhDNVbhTG1wCgsgYKZYs4v3epXzLgY1U9U+YH0Y7Lbwq2l
    jWw+AOAAozEiOKUMwOQwYut476UOaOkoAUx9tcDAssj4NwJ8mwGUeerZ9larOv0y
    Y4NSW/Mc+aIpOotZQ9Qvs3v1z8U5/JWPuUqCyag0pnYs+IZXFo5sZBV/9Mevoyoq
    wRjOS4CFfpaVix7x04tlEFxvnRMCAwEAAaOCAhUwggIRMA4GA1UdDwEB/wQEAwIF
    oDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAd
    BgNVHQ4EFgQUWKF8pzlpBAyy6BgVJ4XYjGclipkwHwYDVR0jBBgwFoAUu7zDR6Xk
    vKnGw6RyDBCNojXhyOgwVwYIKwYBBQUHAQEESzBJMCIGCCsGAQUFBzABhhZodHRw
    Oi8vcjEwLm8ubGVuY3Iub3JnMCMGCCsGAQUFBzAChhdodHRwOi8vcjEwLmkubGVu
    Y3Iub3JnLzAcBgNVHREEFTATghFhdXRoLmFnaWxpY3VzLmNvbTATBgNVHSAEDDAK
    MAgGBmeBDAECATCCAQQGCisGAQQB1nkCBAIEgfUEgfIA8AB2AMz7D2qFcQll/pWb
    U87psnwi6YVcDZeNtql+VMD+TA2wAAABlP7qBrsAAAQDAEcwRQIhALEu1X27I+ri
    KPr8YHbJkoJC5MrRcyty17i1dSsofSv5AiB7Z1So5zkm+P0YoB1YA565NahOS1eo
    xCnzBYkhjzcEPQB2AKLjCuRF772tm3447Udnd1PXgluElNcrXhssxLlQpEfnAAAB
    lP7qBrMAAAQDAEcwRQIhAL/i58WlCBWAELpFjiDDSLZFTY8HReOhUUN20Srp928b
    AiBenIEa3TXkLpROo+s8JLwrSe+3IeStW1461Pm+256ssjANBgkqhkiG9w0BAQsF
    AAOCAQEAt7c/TU7oHw4v8KAMzTHicT/uugTty0mdzl8tw+G30TO6SGKdn79ddhPa
    052d4S2SoEW1p9r3OrpzjMZEywEG4hN4MS6vsILTKKQ0BFKEjqWkTz5YH+oWjwiJ
    ABlaajkTcLbiBk8xcDVR0TpND7sjMAqurRf/cFeuGevsAACdY7S4swMIPp1OXdZb
    cSXkZ3ET6NpItL/WfF0JG9ke3OVrtaF9mETG1Hvy/lHkUP2qTSrV3GLqG+tOPEfH
    KzQCaDOPHZt9V82finAqRYCOOdeB41REF2uoBrokCc5qm7flyzsUVGhkOuleoorj
    utKYMp7QRmHn2LCAgfYctnRoIrm1pA==
    -----END CERTIFICATE-----
     1 s:C = US, O = Let's Encrypt, CN = R10
       i:C = US, O = Internet Security Research Group, CN = ISRG Root X1
       a:PKEY: rsaEncryption, 2048 (bit); sigalg: RSA-SHA256
       v:NotBefore: Mar 13 00:00:00 2024 GMT; NotAfter: Mar 12 23:59:59 2027 GMT
    -----BEGIN CERTIFICATE-----
    MIIFBTCCAu2gAwIBAgIQS6hSk/eaL6JzBkuoBI110DANBgkqhkiG9w0BAQsFADBP
    MQswCQYDVQQGEwJVUzEpMCcGA1UEChMgSW50ZXJuZXQgU2VjdXJpdHkgUmVzZWFy
    Y2ggR3JvdXAxFTATBgNVBAMTDElTUkcgUm9vdCBYMTAeFw0yNDAzMTMwMDAwMDBa
    Fw0yNzAzMTIyMzU5NTlaMDMxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBF
    bmNyeXB0MQwwCgYDVQQDEwNSMTAwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEK
    AoIBAQDPV+XmxFQS7bRH/sknWHZGUCiMHT6I3wWd1bUYKb3dtVq/+vbOo76vACFL
    YlpaPAEvxVgD9on/jhFD68G14BQHlo9vH9fnuoE5CXVlt8KvGFs3Jijno/QHK20a
    /6tYvJWuQP/py1fEtVt/eA0YYbwX51TGu0mRzW4Y0YCF7qZlNrx06rxQTOr8IfM4
    FpOUurDTazgGzRYSespSdcitdrLCnF2YRVxvYXvGLe48E1KGAdlX5jgc3421H5KR
    mudKHMxFqHJV8LDmowfs/acbZp4/SItxhHFYyTr6717yW0QrPHTnj7JHwQdqzZq3
    DZb3EoEmUVQK7GH29/Xi8orIlQ2NAgMBAAGjgfgwgfUwDgYDVR0PAQH/BAQDAgGG
    MB0GA1UdJQQWMBQGCCsGAQUFBwMCBggrBgEFBQcDATASBgNVHRMBAf8ECDAGAQH/
    AgEAMB0GA1UdDgQWBBS7vMNHpeS8qcbDpHIMEI2iNeHI6DAfBgNVHSMEGDAWgBR5
    tFnme7bl5AFzgAiIyBpY9umbbjAyBggrBgEFBQcBAQQmMCQwIgYIKwYBBQUHMAKG
    Fmh0dHA6Ly94MS5pLmxlbmNyLm9yZy8wEwYDVR0gBAwwCjAIBgZngQwBAgEwJwYD
    VR0fBCAwHjAcoBqgGIYWaHR0cDovL3gxLmMubGVuY3Iub3JnLzANBgkqhkiG9w0B
    AQsFAAOCAgEAkrHnQTfreZ2B5s3iJeE6IOmQRJWjgVzPw139vaBw1bGWKCIL0vIo
    zwzn1OZDjCQiHcFCktEJr59L9MhwTyAWsVrdAfYf+B9haxQnsHKNY67u4s5Lzzfd
    u6PUzeetUK29v+PsPmI2cJkxp+iN3epi4hKu9ZzUPSwMqtCceb7qPVxEbpYxY1p9
    1n5PJKBLBX9eb9LU6l8zSxPWV7bK3lG4XaMJgnT9x3ies7msFtpKK5bDtotij/l0
    GaKeA97pb5uwD9KgWvaFXMIEt8jVTjLEvwRdvCn294GPDF08U8lAkIv7tghluaQh
    1QnlE4SEN4LOECj8dsIGJXpGUk3aU3KkJz9icKy+aUgA+2cP21uh6NcDIS3XyfaZ
    QjmDQ993ChII8SXWupQZVBiIpcWO4RqZk3lr7Bz5MUCwzDIA359e57SSq5CCkY0N
    4B6Vulk7LktfwrdGNVI5BsC9qqxSwSKgRJeZ9wygIaehbHFHFhcBaMDKpiZlBHyz
    rsnnlFXCb5s8HKn5LsUgGvB24L7sGNZP2CX7dhHov+YhD+jozLW2p9W4959Bz2Ei
    RmqDtmiXLnzqTpXbI+suyCsohKRg6Un0RC47+cpiVwHiXZAW+cn8eiNIjqbVgXLx
    KPpdzvvtTnOPlC7SQZSYmdunr3Bf9b77AiC/ZidstK36dRILKz7OA54=
    -----END CERTIFICATE-----
    ---
    Server certificate
    subject=CN = auth.agilicus.com
    issuer=C = US, O = Let's Encrypt, CN = R10
    ---
    No client certificate CA names sent
    Peer signing digest: SHA256
    Peer signature type: RSA-PSS
    Server Temp Key: X25519, 253 bits
    ---
    SSL handshake has read 3054 bytes and written 403 bytes
    Verification: OK
    ---
    New, TLSv1.3, Cipher is TLS_AES_256_GCM_SHA384
    Server public key is 2048 bit
    Secure Renegotiation IS NOT supported
    No ALPN negotiated
    Early data was not sent
    Verify return code: 0 (ok)
    ---
    DONE
    ```