Hello everyone, '''Context''' I have a website on my raspberry for my photos. I have created a client and server ssl certificate to secure the best '''Result''' On my brower "Pale Moon" (firefox fork), it works fine. When I go to my site, I am asked to validate the ssl client certificate before entering the site. On Firefox, I immediatelly get the message : 400 Bad Request No reuqired SSL certificate was sent. I don't get any error code specific to Firefox '''What I have done to client certifiat''' '''Creation of authority certificate''' I put in the file openssl.cnf : [ req ] default_md = sha1 distinguished_name = req_distinguished_name [ req_distinguished_name ] countryName = Country countryName_default = FR countryName_min = 2 countryName_max = 2 localityName = Locality localityName_default = France organizationName = Organization organizationName_default = Raspberry commonName = Common Name commonName_max = 64 [ certauth ] subjectKeyIdentifier And I execute the following command : openssl req -config ./openssl.cnf -newkey rsa:2048 -nodes -keyform PEM -keyout ca.key -x509 -days 3650 -extensions certauth -outform PEM -out ca.cer '''The key client ''' openssl genrsa -out client.key 2048 '''The CSR file''' openssl req -config ./openssl.cnf -new -key client.key -out client.req '''and then the certificat file : ''' openssl x509 -req -in client.req -CA ca.cer -CAkey ca.key -set_serial 101 -extfile openssl.cnf -extensions client -days 3650 -outform PEM -out client.cer '''P12 ''' In order to integrate my certificate in my browser, I convert to p12 format file openssl pkcs12 -export -inkey client.key -in client.cer -out client.p12 I then integrate my p12 certificate the same way under Pale Moon and Firefox '''My question ''' How do I get Firefox to ask me for the client certificate without it ignoring it? My certificat visible on Firefox attached