IGEL ICG with Let’s Encrypt Certificates


I’m having some issues configuring ICG with Let’s Encrypt Certificate (Certbot). I followed the following article to create the certificates.

kb.igel.com/igelicg-2.02/en/recommendation-for-a-free-signed-certificate-for-icg-31601251.html

I imported the following certs, I tried with both cert1.pem and fullchain1.pem and we get the same error when connecting to ICG “Failed to get server certificate”. When we type the external URL in a browser, we don’t get any certificate error and the chain looks good.

Anyone successfully configured ICG with Let’s Encrypt certs?


How did you import them to the UMS.? The article isn’t clear how to add them to the UMS. I see an option to import a root certificate for the ICG., but not an option to import a signed certificate.


I agree. I first connected to our network share and the I run the following commands.

sudo -i

cd /etc/letsencrypt/archive/icg.yourdomain.com

cp *.pem /tmp

chmod 777 /tmp/*.pem

I tried to copy the files to my dfs share with the following command but I keep getting an access denied error. I ended up grabbing them with filezilla (sftp).

`cp *pem /run/user/1000/gvfs/smb-share:server=http://ad.domain.com ad.domain.com,share=SHARE$`

It seems that the root certificate (DST Root CA X3) was missing so I downloaded it from www.identrust.com/support/downloads

I converted the p7b file to pem running this command:

openssl pkcs7 -inform DER -in trustidrootx3_chain.p7b -print_certs -outform PEM -out trustidrootx3_chain.pem

I then imported and created the chain accordingly.

However when I complete the ICG setup I now get the following error:

No matter what we try we get the same error when connecting to ICG “Failed to get server certificate”.

When we type the external URL in a browser, we don’t get any certificate error and the chain looks good.

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