Chapter 43 Troubleshooting
ZyWALL ATP Series User’s Guide
812
Make sure the Zyxel Device’s current date and time are correct.
I cannot get a certificate to import into the Zyxel Device.
1 For My Certificates, you can import a certificate that matches a corresponding certification request that
was generated by the Zyxel Device. You can also import a certificate in PKCS#12 format, including the
certificate’s public and private keys.
2 You must remove any spaces from the certificate’s filename before you can import the certificate.
3 Any certificate that you want to import has to be in one of these file formats:
• Binary X.509: This is an ITU-T recommendation that defines the formats for X.509 certificates.
• PEM (Base-64) encoded X.509: This Privacy Enhanced Mail format uses lowercase letters, uppercase
letters and numerals to convert a binary X.509 certificate into a printable form.
• Binary PKCS#7: This is a standard that defines the general syntax for data (including digital signatures)
that may be encrypted. A PKCS #7 file is used to transfer a public key certificate. The private key is not
included. The Zyxel Device currently allows the importation of a PKS#7 file that contains a single
certificate.
• PEM (Base-64) encoded PKCS#7: This Privacy Enhanced Mail (PEM) format uses lowercase letters,
uppercase letters and numerals to convert a binary PKCS#7 certificate into a printable form.
• Binary PKCS#12: This is a format for transferring public key and private key certificates.The private key
in a PKCS #12 file is within a password-encrypted envelope. The file’s password is not connected to
your certificate’s public or private passwords. Exporting a PKCS #12 file creates this and you must
provide it to decrypt the contents when you import the file into the Zyxel Device.
Note: Be careful not to convert a binary file to text during the transfer process. It is easy for this
to occur since many programs use text files by default.
I cannot access the Zyxel Device from a computer connected to the Internet.
Check the service control rules and to-Zyxel Device security policies.
I uploaded a logo to display on the upper left corner of the Web Configurator login screen and
access page but it does not display properly.
Make sure the logo file is a GIF, JPG, or PNG of 100 kilobytes or less.
I uploaded a logo to use as the screen or window background but it does not display properly.
Make sure the logo file is a GIF, JPG, or PNG of 100 kilobytes or less.
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