Individual skill
pentesting-ntp
Testing NTP services (default 123/UDP for time data and legacy control, 4460/TCP for NTS-KE/TLS) for monlist/Mode-7 amplification exposure, remote query/control leakage, time-shift MITM, weak NTS-KE TLS, and known ntpd/chrony/ntpd-rs CVEs during authorized engagements.
internal/tools/skills/data/network-services-pentesting/pentesting-ntp/SKILL.md
Source commit d42f381ad34843e71a42658e5c57290c713e85af
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- Instructions only
- Last checked
- Nov 9, 2026
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- Repository last updated
- Nov 9, 2026
- License
- Apache-2.0
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- cybersecurity Repository topic
- security Repository topic
- bug-bounty Repository topic
- automation Repository topic
- autonomous-pentesting Repository topic
- ai-agent Repository topic
- ai-security Repository topic
- ethical-hacking Repository topic
- golang Repository topic
- penetration-testing Repository topic
- penetration-testing Declared skill tag
- network-services Declared skill tag
- ntp Declared skill tag
- data Derived category
- testing Derived category
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# Pentesting NTP (port 123)
## When to Use
- Default port `123/udp` (data + legacy Mode-6/7 control); `4460/tcp` for NTS-KE (RFC 8915, TLS 1.3 key establishment).
- When `nmap` shows `123/udp open ntp udp-response`.
- NTP syncs clocks for auth, crypto and logging — an attacker who influences NTP can bypass time-based controls or hinder forensics.
- Internet-facing NTP is a prime DDoS reflection/amplification source (the legacy `monlist` query).
## Quick Enumeration
```bash
# Safe discovery + vuln scripts (excludes dos/brute)
nmap -sU -sV --script "ntp* and (discovery or vuln) and not (dos or brute)" -p 123 <IP>
# Explicit monlist amplification check