An easy way to test the port on AIX

An easy way to test the AIX port-Linux Enterprise Application-Linux server application information. The following is a detailed description. The following uses port 80 as an example to describe how to test whether a port works:

1. Edit the/etc/services file and find the following two lines:
Http 80/tcp # World Wide Web HTTP
Http 80/udp # World Wide Web HTTP

Use # To comment out the two rows and add the new two rows as follows:
# Http 80/tcp # World Wide Web HTTP
# Http 80/udp # World Wide Web HTTP
Telnet2 80/tcp
Telnet2 80/udp

2. Edit the/etc/inetd. conf file and find the following line:
Telnet stream tcp6 nowait root/usr/sbin/telnetd-

Add a row under it
Telnet2 stream tcp6 nowait root/usr/sbin/telnetd-

3. # refresh-s inetd

4. # lssrc-ls inetd
Confirm a row in the output
Telnet2/usr/sbin/telnetd-a active

5. # netstat-
The output of this command shows that port 80 is listening, that is
Tcp 0 0 *. 80 *. * LISTEN

6. Try to log on to the server from another AIX machine with the following command. If the server can log on normally, port 80 is working properly.
# Telnet 80

7. # netstat-an | grep 80
You can see that a connection is established through port 80, similar to the following output:
Tcp4 0 0 9.181.50.90.80 9.181.50.107.3750 ESTABLISHED

8. The test is complete.
Note that after the test is completed, change the/etc/services and/etc/inetd. conf files back to the previous status and refresh the inetd service:
# Refresh-s inetd