Hello monks

I am trying to install perlbrew on Linux machine

[user@host ~]$ cat /etc/redhat-release
Red Hat Enterprise Linux Server release 6.8 (Santiago)
[download]

When I try using curl or wget, I continue to get certificate error:

[user@host ~]$ curl -L https://install.perlbrew.pl | bash

curl: (60) Peer certificate cannot be authenticated with known CA cert
+ificates
More details here: http://curl.haxx.se/docs/sslcerts.html

curl performs SSL certificate verification by default, using a "bundle
+"
 of Certificate Authority (CA) public keys (CA certs). If the default
 bundle file isn't adequate, you can specify an alternate file
 using the --cacert option.
If this HTTPS server uses a certificate signed by a CA represented in
 the bundle, the certificate verification probably failed due to a
 problem with the certificate (it might be expired, or the name might
 not match the domain name in the URL).
If you'd like to turn off curl's verification of the certificate, use
 the -k (or --insecure) option.
[download]

I tried with -k option as well but that also fails:

[user@host ~]$ curl -kL https://install.perlbrew.pl | bash
  % Total    % Received % Xferd  Average Speed   Time    Time     Time
+  Current
                                 Dload  Upload   Total   Spent    Left
+  Speed
103  1548  103  1548    0     0   1335      0  0:00:01  0:00:01 --:--:
+--  1335

## Download the latest perlbrew
curl: (60) Peer certificate cannot be authenticated with known CA cert
+ificates
More details here: http://curl.haxx.se/docs/sslcerts.html

curl performs SSL certificate verification by default, using a "bundle
+"
 of Certificate Authority (CA) public keys (CA certs). If the default
 bundle file isn't adequate, you can specify an alternate file
 using the --cacert option.
If this HTTPS server uses a certificate signed by a CA represented in
 the bundle, the certificate verification probably failed due to a
 problem with the certificate (it might be expired, or the name might
 not match the domain name in the URL).
If you'd like to turn off curl's verification of the certificate, use
 the -k (or --insecure) option.
[download]

Using wget throws following error:

[user@host ~]$ wget -O - https://install.perlbrew.pl | bash
--2019-03-06 10:58:43--  https://install.perlbrew.pl/
Resolving install.perlbrew.pl... 64.62.231.202
Connecting to install.perlbrew.pl|64.62.231.202|:443... connected.
ERROR: cannot verify install.perlbrew.pl’s certificate, issued by “/DC
+=com/DC=<my_domain>/DC=<my_domain>/CN=<my_domain> Enterprise Root CA”
+:
  Self-signed certificate encountered.
To connect to install.perlbrew.pl insecurely, use ‘--no-check-certific
+ate’.
[download]

Using ‘--no-check-certificate’ option also gives the same error as above.

Could this be a firewall issue (I am behind a corporate firewall) or SSL certificate issue as error says?

Trying to find if someone faced this and know how to get around it.

UPDATE: Marked subject as SOLVED.