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Chapter 2
2-10
Configuring remote access for noncrypto-enabled versions of the system
The Telnet and FTP configuration options are presented only if you do not
have a full crypto-enabled version of the BIG-IP. If you have a
crypto-enabled version of the software, you are prompted to configure SSH.
Configuring Telnet
Use this option to configure the Telnet server on a BIG-IP only. The Setup
utility prompts you to configure each service independently. This allows
you to enable Telnet.
The utility prompts you for a configuration address for each service from
which administrators may access the BIG-IP. You can use wildcard
characters (*) to include all addresses from a specific part of the network.
This utility also prompts you to create a support account for access by
technical support.
If inetd is not currently configured, this utility configures inetd for the
requested services. If the ports for Telnet are closed, this utility opens the
ports to permit Telnet connections to the BIG-IP.
Configuring FTP
Use this option to configure FTP on the BIG-IP. The Setup utility prompts
you for an IP address from which administrators may access the BIG-IP
with FTP. You can use wildcard characters (*) to include all addresses from
a specific part of the network. This utility also prompts you to create a
support account for access by technical support.
If the service port for FTP is closed, this utility opens the service port to
permit FTP connections to the BIG-IP.
Configuring NTP support
You can synchronize the time on the unit to a public time server by using
Network Time Protocol (NTP). NTP is built on top of TCP/IP and assures
accurate, local timekeeping with reference to clocks located on the Internet.
This protocol is capable of synchronizing distributed clocks, within
milliseconds, over long periods of time. If you choose to enable NTP, make
sure UDP port 123 is open in both directions when the unit is behind a
firewall.
Configuring NameSurfer for zone file management
If you have the 3-DNS module installed, you can configure NameSurfer to
handle DNS zone file management. We strongly recommend that you
configure NameSurfer to handle zone file management by selecting
NameSurfer to be the master on the unit. If you select NameSurfer as the
master, NameSurfer converts the DNS zone files on the system, becomes the
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