Verify the Firewall Settings

For the SL4000 and STA to communicate using SCI, the firewall settings must be properly configured.

1. Verify the following firewall settings:
   • Firewall is running
   • Check hosts.allow and hosts.deny files if using those OS services
   • REJECT rules are not interfering with the inbound and outbound SCI ports (such as 7103, 7102, and 7026)
   • Port forwarding from 162 to 7029 (port 7029 may be different if you have customized it)
   • Network router configuration between the STA server and library

   To verify, open a terminal session and login as the root user. Issue the following:

   # systemctl status iptables
   # more /etc/hosts.allow
   # iptables -L
   

2. If needed, use the iptables command to remove or modify the firewall rules to allow SCI communication. For example:

   # iptables -D INPUT 5
   

   WARNING:

   Removing or modifying firewall rules can create security risks and must be done by a qualified security administrator.

3. Verify the iptables settings:
   1. Verify iptables rules were been saved correctly using the service iptables save command.

      # service iptables save
      

   2. Verify the iptables server is enabled. For example:

      # systemctl status iptables
      # systemctl start iptables
      # systemctl enable iptables