Firewall and intrusion detection system are two important components in the field of network security, which play a key role in preventing and detecting network intrusion. The combination of firewall and intrusion detection system can make the network more secure. Firewalls can prevent external attacks, while IDS can detect and report internal or external potential threats.
If an attack breaks through the firewall, IDS can still find and report it in time so that administrators can take appropriate measures to prevent further attacks. Firewall is a device located at the boundary of the network, which can control the access of network traffic according to predefined security policies. Firewalls can prevent unauthorized access and data transmission, such as prohibiting external network traffic from entering your local area network or restricting access to specific network segments.
At the same time, the firewall can also be used to monitor network activities and timely discover and report any suspicious connections or behaviors. Intrusion detection system (IDS) is a tool to monitor and analyze network traffic. Its main task is to detect and report any signs that may indicate hackers or unauthorized access.
Important measures to prevent hacker intrusion:
1. Strengthen password management: Strong passwords are the first line of defense against hackers. Use long and complicated passwords and change them regularly. Avoid using easy-to-guess passwords, such as birthdays and names. In addition, ensure that the login credentials of all critical systems are protected by strong passwords.
2. Implement security policy: formulate and implement a set of clear security policies, including network use, data backup, user rights management, etc. Conduct safety training for users so that they know how to identify and avoid potential safety risks.
3. Update and patch regularly: There are inevitably security holes in the operating system and application software. In order to prevent hackers from exploiting these vulnerabilities, systems and software should be updated regularly, and the latest security patches should be installed.
4. Use security tools: Using firewalls, intrusion detection systems (IDS), security event information management (SIEM) and other tools can help organizations monitor and identify potential security threats. These tools can help organizations find abnormal network traffic, unauthorized access attempts and other signs that may indicate hacker attacks.