Network penetration testing companies specialize in identifying vulnerabilities and security gaps in internal and external network infrastructures. These firms simulate real-world cyberattacks to uncover risks such as open ports, outdated software, weak firewall rules, and insecure protocols. Leading global companies like Rapid7, Trustwave, and NCC Group offer in-depth network security assessments. In India, top providers include Kratikal, SecureLayer7, SISA InfoSec, and eSec Forte, known for their expertise in ethical hacking and regulatory compliance. These companies help organizations strengthen their network defenses, prevent unauthorized access, and maintain robust cybersecurity postures through detailed testing, analysis, and remediation support.