ot accediendo a sitios seguros

["Luis A. R. Paz" <luis@azunet.minaz.cu>]

Hola amigos estaba tratando de abrir una pagina de una empresa donde 
trabaja un colega mio y me dice lo sgte ..


Secure Connection Failed

      
     

     
       
       

         

url.com uses an invalid security certificate.

The certificate is not trusted because it is self signed.
The certificate is only valid for Convenio Integral

(Error code: sec_error_untrusted_issuer)




       
       


   * This could be a problem with the server's configuration, or it 
could be someone trying to impersonate the server.

   * If you have connected to this server successfully in the past, the 
error may be temporary, and you can try again later.


eso tiene que ver con el navegador que estoy usando ?(iceweasel) o en el 
servidor remoto tienen mal configurado el certificado ssl ??