Moxa V2406-24I-CT-LX [29/81] Disabling the telnet ftp server

V2406/2422/2426 Linux User’s Manual Managing Communications

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Disabling the Telnet/FTP Server

Disable the daemon by typing “#” in front of the first character of the row to comment out the line. For example,

to disable the FTP server, use the following commands:

discard dgram udp wait root /bin/discard

discard stream tcp nowait root /bin/discard

telnet stream tcp nowait root /bin/telnetd

#ftp stream tcp nowait root /bin/ftpd -l

After you finish writing or modifying the code, remember to execute “umount /” to change the root directory

back to Read-only mode.

MOXA:~# umount /

DNS Client

The V2406/2422/2426-LX supports DNS client (but not DNS server). To set up DNS client, you need to edit

three configuration files: /etc/hostname, /etc/resolv.conf, and /etc/nsswitch.conf.

/etc/hostname

1. Mount the root file system with write permission.

MOXA:~# mount -o remount,rw /dev/hda1 /

2. Edit /etc/hostname:

MOXA:~# vi /etc/hostname

MOXA

3. After you finish writing or modifying the code, remember to execute “umount /” to change the root

directory back to Read-only mode.

MOXA:~# umount /

4. Re-configure the hostname.

MOXA:~# /etc/init.d/hostname.sh start

5. Check the new hostname.

MOXA:~# hostname

/etc/resolv.conf

This is the most important file that you need to edit when using DNS. For example, before using # ntpdate

time.stdtime.gov.tw to update the system time, you will need to add the DNS server address to the file. Ask

your network administrator which DNS server address you should use. The DNS server’s IP address is specified

with the nameserver command. For example, add the following line to /etc/resolv.conf (assuming the DNS

server’s IP address is 168.95.1.1):

nameserver 168.95.1.1