Hi. On Wed, 04 May 2016 17:25:40 +0100 Ron Leach <ronle...@tesco.net> wrote:
> List, good afternoon, > > I'd appreciate some advice about how to fix an SSL error I'm hitting > while accessing a government website required for online filing. > Oddly, this error has just occurred, but we've been using the service > without difficulty for a few years. > > The SSL failure is reported by the application as an > "SSL Certificate Verification Error"; no other information. Considering that https://secure.gateway.gov.uk tells me about *selecting* a valid certificate - it could mean that your *client* became expired recently. > Using openssl -showcerts, a "verify error" is reported. Here's the > dialogue - I've skipped the bulk of the certificate texts. > > ron@debians5:~$ openssl s_client -showcerts -connect > secure.gateway.gov.uk:443 </dev/null You'll always get errno 20 that way as openssl does not use any Certified Authority information unless told to do so. Try this: openssl s_client -showcerts -connect secure.gateway.gov.uk:443 \ -CApath /etc/ssl/certs </dev/null Reco