![]() If you want to see when the process is accessing the config file, I ugess you can do it with strace and just filter the trace for the configuration path/filename. When you log in after the reboot and check your iptables firewall with a command like this: iptables -L -v you should see the expected output. Main PID: 2899 (code=exited, status=0/SUCCESS) Linux iptables firewall - Viewing your iptables firewall settings after a reboot Assuming that you configured your iptables firewall properly, you should now be ready to reboot your system. ![]() So, by providing -A as the parameter, we appended a new rule into the chain. For example, the commands we discussed in the last section added a rule in the INPUT chain: iptables -A INPUT -p tcp -dport 22 -j DROP. Process: 2899 ExecStart=/usr/libexec/iptables/iptables.init start (code=exited, status=0/SUCCESS) iptables -A INPUT -s 10.10.10.10 -j DROP Whenever the computer is rebooted or restarted, the iptables service and the existing rules are flushed out or reset. The iptables command allows us to append or delete rules from these chains. Loaded: loaded (/usr/lib/systemd/system/rvice enabled vendor preset: disabled)Īctive: active (exited) since Mon 15:56:29 UTC 1min 19s ago Redirecting to /bin/systemctl status rvice Here is a sample output : service iptables status Then you can check the uptime with service iptables status. If you want to swap to iptables, then you have to install it : yum install iptables-services Like in CentOS 6 just swap the number 80 for your required port and run the reload command This command opens the requested port. ![]() ![]() You can check to see if iptables is installed on your system by: rpm -q iptables iptables-1.4.7-5.1.el62. By default CentOS/RHEL 7 is running firewalld service. Iptables should be installed by default on all CentOS 5.x and 6.x installations. If you type service iptables status it should show you the uptime of iptables. ![]()
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