ZyXEL Communications USG FLEX H Series - 24.4 DNS & DDNS

Chapter 24 System
USG FLEX H Series User’s Guide
361
Figure 221 System > SNMP V3 > Add
The following table describes the labels in this screen.
24.4 DNS & DDNS
DNS (Domain Name System) is for mapping a domain name to its corresponding IP address and vice
versa. The DNS server is extremely important because without it, you must know the IP address of a
machine before you can access it.
Table 177 System > SNMPV3 > Add
LABEL DESCRIPTION
User Specify the username of a login account on the Zyxel Device. The associated password is
used in authentication algorithms and encryption methods.
Password Enters a password consists of eight characters.
User
Authentication
Select an authentication algorithm. MD5 (Message Digest 5) and SHA (Secure Hash
Algorithm) are hash algorithms used to authenticate SNMP data. SHA authentication is
generally considered stronger than MD5, but is slower.
Privacy Specify the encryption method for SNMP communication from this user. You can choose one
of the following:
• DES - Data Encryption Standard is a widely used (but breakable) method of data
encryption. It applies a 56-bit key to each 64-bit block of data.
• AES - Advanced Encryption Standard is another method for data encryption that also
uses a secret key. AES applies a 128-bit key to 128-bit blocks of data.
Group Select the access rights to MIBs:
• read-write - The associated user can create and edit the MIBs on the Zyxel Device, except
the user account.
• read-only - The associated user can only collect information from the Zyxel Device.
Apply Click Apply to save your changes back to the Zyxel Device.
Reset Click Reset to return the screen to its last-saved settings.