Individual skill
pentesting-nfs
Testing NFS services (default port 2049, with rpcbind/mountd on 111 and dynamic ports) for exported share enumeration, missing authentication, UID/GID impersonation, no_root_squash/no_all_squash misconfiguration, subtree_check export escape, and group-based file access (e.g., /etc/shadow) during authorized engagements.
internal/tools/skills/data/network-services-pentesting/pentesting-nfs/SKILL.md
Source commit d42f381ad34843e71a42658e5c57290c713e85af
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- Last checked
- Nov 7, 2026
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- 1,311
- Repository last updated
- Nov 7, 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
- nfs Declared skill tag
- security Derived category
- testing Derived category
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# Pentesting NFS (port 2049)
## When to Use
- Default port `2049/tcp/udp`; NFSv2/v3 also rely on `rpcbind` (`111`) and `mountd` (dynamic) — NFSv4 needs only 2049.
- When `nmap`/`rpcinfo` shows `nfs`, `mountd`, `nfs_acl`, or RPC program `100003`.
- For enumerating exports, mounting shares, and abusing UID/GID trust and squash misconfigurations to read/write privileged files.
## Quick Enumeration
```bash
# Exports + permissions (NFSv3 via mountd)
showmount -e <IP>
# rpcbind / RPC program discovery (locate mountd, nlockmgr, etc.)
rpcinfo -p <IP>