What is bastion host? How do I configure bastion host under Linux? How do I create a firewall for a bastion host under any Linux distribution?
I want to make changes to an iptables configuration. How to do I Save and Restore an iptables Configuration in Ubuntu Linux server?
I admin ecom website and a lot of bogus traffic comes from countries that do not offer much in commercial value. How do I just configure Apache or iptables to just refuse connections to certain countries?
Q. How do I detect port scan attacks by analyzing Debian Linux firewall log files and block port scans in real time? How do I detect suspicious network traffic under Linux?
Q.Can you explain the meaning of following two firewall rules present in my /etc/sysconfig/iptables rules under CentOS Enterprise Linux version 5.2?
-A RH-Firewall-1-INPUT -p 50 -j ACCEPT
-A RH-Firewall-1-INPUT -p 51 -j ACCEPT
Q. I’ve CentOS Linux server configured with APF firewall. How do I open port 22 from specific IP address only? I’ve fix static ADSL IP address assgined and I’d like to open port 22 from my IP 18.104.22.168 only using APF firewall script. How do I configure firewall?
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Q. I’ve only one public IP address assigned by my ISP using metro Ethernet connection. eth0 has public IP and eth1 is connected to our network switch. How do I configure Linux box to forward traffic to my web server hosted at 192.168.1.100 IP address?
Continue reading “How To Run Linux Web Server / Service on Private IP Network”