Moxa W406-CE [36/74] Disabling the ftp server

W315A/325A Linux User's Manual Managing Communications

4-2

Telnet/FTP

In addition to supporting Telnet client and FTP client/server, the W315A/325A also supports SSH and sftp

client/server. To enable or disable the Telnet/ftp server, you first need to edit the file

/etc/inetd.conf.

Enabling the Telnet/ftp server

The following example shows the default content of the file /etc/inetd.conf. The default is to enable the

Telnet/ftp server:

discard dgram udp wait root /bin/discard

discard stream tcp nowait root /bin/discard

ftp stream tcp nowait root /bin/ftpd -l

Disabling the ftp server

Disable the daemon by typing ‘#’ in front of the first character of the row to comment out the line.

DNS

The W315A/325A supports DNS client (but not DNS server). To set up DNS client, you need to edit three

configuration files:

/etc/hosts, /etc/resolv.conf, and /etc/nsswitch.conf.

/etc/hosts is the first file that the Linux system reads to resolve the host name and IP address.

/etc/resolv.conf is the most important file that you need to edit when using DNS for the other programs.

For example, before you use #ntpdate time.nist.goc 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 if the DNS server’s IP address is 168.95.1.1:

nameserver 168.95.1.1

10.120.53.100 – PuTTY

root@Moxa:/etc# cat resolv.conf

# resolv.conf This file is the resolver configuration file

# See resolver(5).

#nameserver 192.168.1.16

nameserver 168.95.1.1

nameserver 140.115.1.31

nameserver 140.115.236.10

root@Moxa:/etc#

/etc/nsswitch.conf defines the sequence to resolve the IP address by using /etc/hosts or

/etc/resolv.conf.