Hi Yann, Earlier I've downloaded Websphere Server Root certificate in Base-64 format. So I was using inform as pem as DER is not working. Not I've downloaded in DER format and ran below command that you gave. After restarting my apache and when I try to access url I see below error. [Mon Feb 12 07:22:12.631833 2018] [ssl:warn] [pid 21729:tid 139998669920000] AH02268: Proxy client certificate callback: (Virtual:443) downstream server wanted client certificate but none are configured [Mon Feb 12 07:22:12.644376 2018] [proxy_http:error] [pid 21729:tid 139998669920000] (103)Software caused connection abort: [client 10.246.8.176:53774] AH01102: error reading status line from remote server WASSERVER:PORT [Mon Feb 12 07:22:12.644411 2018] [proxy:error] [pid 21729:tid 139998669920000] [client 10.246.8.176:53774] AH00898: Error reading from remote server returned by /URI Was wondering if Apache(Client) don't connect to Websphere (Server) if Websphere uses a Self-signed certificate? Warm Regards, Naveen Kumar Reddy N -----Original Message----- From: Yann Ylavic [mailto:ylavic.dev@xxxxxxxxx] Sent: Monday, February 12, 2018 2:31 AM To: users@xxxxxxxxxxxxxxxx Subject: EXT: Re: Mutual authentication between Apache HTTP server and an application server. Hi, On Mon, Feb 12, 2018 at 1:30 AM, Naveen Nandyala - Vendor <Naveen.Nandyala@xxxxxxxxxxx> wrote: > > /tmp/was.crt was created as below. > > Extracted root certificate from WAS. > Converted .cer file to crt using below command. > > openssl x509 -inform PEM -in was.cer -out was.crt Isn't "was.cer" rather in DER format? The above command is a no-op, and you probably want PEM for the certificate used on the proxy, so maybe : $ openssl x509 -inform DER -in was.cer -outform PEM -out was.crt ? Regards, Yann. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx