Figure 578 Opera 9: Certificate Manager - ZyXEL Communications ZyWALL USG 300 User Manual

Appendix D Importing Certificates
3 In the Certificates manager, select the Authorities tab, select the certificate that you
want to remove, and then click Delete.
Figure 578
4 The next time you go to the web site that issued the public key certificate you just
removed, a certification error appears.
There is no confirmation when you delete a certificate authority, so be
absolutely certain that you want to go through with it before clicking the button.
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Opera 9: Certificate manager
ZyWALL USG 300 User's Guide