Telnet cannot connect tomcat port in linux

Problem:

Telnet under Windows and Tomcat under Linux cannot work.

Reason:

Firewall setting problem under Linux /etc/sysconfig/iptables

Related video sharing: linux video tutorial

Solution:

1. Turn off the firewall under Linux

service iptables stop

2. Add firewall access permissions for the tomcat port

vim /etc/sysconfig/iptables

Copy a development command for port 22

-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT

Add it at the end and change 22 to your tomcat port number.

3. Restart the service

service iptables restart

4. Restart tomcat

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