Hongwei Li wrote: [...]
[...]
However, I face a problem when I use Firefox. I got:
You have received an invalid certificate. Please contact the server administator or email correspodent and give them the following information:
Your certificate contains the same serial number as another certificate issued by the certificate authority. Please get a new certificate containing a unique serial number.
What does that mean -- "the same serial number as another certificate..."?
This is because you already "accepted" a test certificate from a different computer and FireFox is complaning that it's not unique. You need to purchase a valid cert from a certificate authority (Verisign, Thawte...).
If you want SSL for pure encryption and don't care to pay for a valid cert, then you can just generate one.
You can also just go to FireFox preferences and delete the offending cert.
-- Regards, Matt Florido (Newly acquainted with FC3)
