ZyXEL Communications ZYWALL 5 - 15.13 Verifying a Trusted Remote Host’s Certificate

ZyWALL 5 User’s Guide
Chapter 15 Certificates 267
15.12 Trusted Remote Hosts
Click CERTIFICATES, Trusted Remote Hosts to open the Trusted Remote Hosts screen
(see the following figure). This screen displays a list of the certificates of peers that you trust
but which are not signed by one of the certification authorities on the Trusted CAs screen.
You do not need to add any certificate that is signed by one of the certification authorities on
the Trusted CAs screen since the ZyWALL automatically accepts any valid certificate signed
by a trusted certification authority as being trustworthy.
CRL Distribution
Points
This field displays how many directory servers with Lists of revoked certificates
the issuing certification authority of this certificate makes available. This field
also displays the domain names or IP addresses of the servers.
MD5 Fingerprint This is the certificate’s message digest that the ZyWALL calculated using the
MD5 algorithm. You can use this value to verify with the certification authority
(over the phone for example) that this is actually their certificate.
SHA1 Fingerprint This is the certificate’s message digest that the ZyWALL calculated using the
SHA1 algorithm. You can use this value to verify with the certification authority
(over the phone for example) that this is actually their certificate.
Certificate in PEM
(Base-64) Encoded
Format
This read-only text box displays the certificate or certification request in Privacy
Enhanced Mail (PEM) format. PEM uses 64 ASCII characters to convert the
binary certificate into a printable form.
You can copy and paste the certificate into an e-mail to send to friends or
colleagues or you can copy and paste the certificate into a text editor and save
the file on a management computer for later distribution (via floppy disk for
example).
Export Click this button and then Save in the File Download screen. The Save As
screen opens, browse to the location that you want to use and click Save.
Apply Click Apply to save your changes back to the ZyWALL. You can only change
the name and/or set whether or not you want the ZyWALL to check the CRL that
the certification authority issues before trusting a certificate issued by the
certification authority.
Cancel Click Cancel to quit and return to the Trusted CAs screen.
Table 83 Trusted CA Details (continued)
LABEL DESCRIPTION