Definition
IPv4 (Internet Protocol version 4) is the fourth version of the Internet protocol (IP) that enables devices to communicate over the Internet. It has four sets separated by dots, each with a value between 0 and 255 (like 192.168.01).
However, IPv4 has some drawbacks, so IPv6 is replacing it to improve functionality and provide a larger address space.
IPv4 Drawbacks
- Insufficient security features: Unlike IPv6, IPv4 lacks advanced security features to prevent cyber threats like IP spoofing, DDoS attacks, and session hijacking.
- Compatibility issues: IPv4 isn’t compatible with IPv6, resulting in security gaps that hackers can easily exploit.
- Fewer IP addresses: IPv4 has limited IP address space, supporting a maximum of 4.3 billion unique addresses. This is insufficient for the increasing number of internet-enabled devices.
Preventing IPv4 Hacker Attacks
- Employ more secure protocols like IPv6, SSH, and HTTPS to encrypt your traffic and prevent malware.
- Implement access controls and firewalls to block malicious traffic and restrict unauthorized access.
- Use a VPN to encrypt your data as it transits over public networks.