IP Masquerading in Linux

Posted at January 5, 2017 at 4:53 pm by Jithin

IP Masquerade is a networking function in Linux similar to the one-to-many NAT (Network Address Translation) servers found in many commercial firewalls and network routers. IP Masquerade, also called IPMASQ or MASQ, allows one or more computers in a network without assigned IP addresses to communicate with the Internet using Linux server's assigned IP address. If a Linux host is connected to the Internet via PPP, Ethernet, etc., the IP Masquerade feature allows other "internal" computers connect   [...]

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How to Use Nmap Command

Posted at September 8, 2016 at 6:31 pm by Jithin

Network Mapper is an open security tool used for network exploration, security scanning and auditing.  The nmap command includes plenty of options which make the utility much more efficient, but difficult for new users. Nmap are commonly used for: 1) Security audits 2) Multiple systems and network administrators find it useful for routine tasks such as network inventory 3) Managing service upgrade schedules 4) Monitoring host or service up-time. 1) Install nmap sudo apt-get inst   [...]

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Best Open Source Firewall Solutions

Posted at August 22, 2016 at 10:28 am by Jithin

Security is the most primary feature of any system. Any system is susceptible to denial of service, cracking, intrusion, snooping (intercepting the data of another user), or viruses/worms/Trojan horses. To protect the system from such attacking we use a secure box. One of the steps to prevent such activities is using a firewall. A firewall is network security system, which protects the internal and external networks. The firewall works under a set of security rules, which allows you to contro   [...]

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