In simple terms, a network port receives and transmits information on a network for a specific service. While port scanning targets multiple ports on a single system, port sweeping targets one specific port number across multiple systems at once. It is also essential to understand that port scanning and port sweeping are not synonymous, as both terms are frequently used. Malicious hackers also use the same process to identify port security weaknesses that they can use to compromise a network’s security and gain access.ĭue to possible vulnerabilities associated with network ports, penetration testers and other cybersecurity professionals must understand the importance of using the most relevant port scanning techniques for a particular situation. The overarching goal of port scanning is to find ports, hosts, and server locations vulnerable to an attack and to diagnose those points’ security levels. Port scanning then commences by sending packets to specific ports on a host (Fortinet, 2020). Port scans almost always occur after an initial network scan, which detects network hosts and maps them to their IP addresses. Port scanning can also reveal the presence of firewalls and other security measures between a server and a user’s device (Avast Business, 2021). Port scanning aims to determine the organization of IP addresses, hosts, and ports in a network-in particular, which ports are open and sending or receiving data. Keep reading to gain a deeper understanding of port scanning, and check out EC-Council’s C|PENT course to learn more about advancing your career in cybersecurity. Port scanning is a fundamental part of the pre-attack phase of a penetration test.ĮC-Council’s Certified Penetration Testing Professional (C|PENT) certification teaches port scanning, advanced Windows attacks, and many other penetration testing techniques essential for success as a cybersecurity professional. Ethical hackers and penetration testers frequently use port scanning techniques to locate vulnerabilities in a network that malicious hackers can use to gain access. Port scanning techniques are a valuable part of any cybersecurity professional’s toolkit. Preventing Malicious Hacks with Port Scanning Techniques
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