4 FAQ tagged "firewall"

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Access Any Remote Server Port Without Modifying Firewall Settings
I’ve couple of remote servers and I’d like to access few admin only application running on port 10000 and 3001. My firewall only allows port 80, 443, 25, 22 and 110 for public access. Do I need to open port 10000 and 3001 for everyone using firewall? How do I access my admin only apps without opening port 10000 and 3001?
How to: Open Ssh Port 22 on Linux APF Firewall under CentOS / RHEL
Q. I’d like to change ssh port from 22 to 2346. I changes the ssh port and reloaded OpenSSH but didn’t get through my firewall. I’m using APF firewall script under cPanel control panel? How do I open port 2346?
A. By default APF configured via /etc/apf/conf.apf file. All you have to do is login as [...]
Linux Firewall: Display Status and Rules of Iptables Firewall
Q. How do I display / list all rules in the selected chain? How do I find out which rules are active? What is blocked and opened with my firewall?
A. To List all rules in the selected chain use the -L option. If no chain is selected, all chains are listed. As [...]
Iptables is not sending LOG to syslog file
Q. I am running SSH/MySQL/Webserver and setup iptables based firewall. But my logs are send to console rather than the system log files. How do make sure that iptables LOG target messages are send to /var/log/messages file?
A. IPTABLES LOG module turns on kernel logging of matching packets. When this option is set for a [...]

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