Solution to SolarisTELNETftp over long time

Solution for SolarisTELNETftp-Linux Enterprise Application-Linux server application information. Symptoms:
1. The client uses IPtelnet from the server. ftp takes a long time, and ftp or even timeout exits.

2. on the server side arp-a, the command does not display back for a long time.

Root cause:
The DNS of the Solaris server tries to reverse resolve the host name of the client.

Solution:
1. Modify the/etc/nsswitch. conf file. Remove the dns field.
For example:
# Vi/etc/nsswitch. conf
~~
# You must also set up the/etc/resolv. conf file for DNS name
# Server lookup. See resolv. conf (4 ).
Hosts: files # dns <Remove this dns field.>
Ipnodes: files
~~

2. Complete the DNS reverse resolution settings.