About the Telnet,ftp,ssh login slow issue

Issue This article describes how to resolve the problem of telnet,ftp SSH login in DNS environment.

Answer

For systems that use DNS, the problem of remotely initiating telnet,ftp SSH logins is slow .

1. Check DNS configuration
Please check the/etc/resolv.conf file to make sure the configuration is correct.
If you do not use DNS in your system, delete the/etc/resolv.conf. (Not emptied, please delete directly)

2. Setting up Telnet,FTP Service
Edit/etc/inetd.conf file, add parameter C in Telnet and ftp stream tcp6 nowait root usrsbinftpd ftpd-c
Telnet stream tcp6 nowait root usrsbintelnetd telnetd-a-C
Refresh the inetd service
# refresh-s inetd

(2) SSH service
To edit the/etc/ssh/sshd_config file, set the Usedns option to No, as follows
Usedns No
Restarting the SSHD service
# stopsrc-s Sshd
# startsrc-s Sshd

About the Telnet,ftp,ssh login slow issue