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Provides information between Unix based systems. Port is often probed, it can be used to fingerprint the Nix OS, and to obtain information about available services. Port used with NFS, NIS, or any rpc-based service.
**Default port:** 111/TCP/UDP, 32771 in Oracle Solaris
You can try to exploit it. Anyway, first of all you will **need to guess the NIS "domain name"** of the machine (when NIS is installed it's configured a "domain name") and **without knowing this domain name you cannot do anything**.
Upon obtaining the NIS domain name for the environment (example.org in this case), use the ypwhich command to ping the NIS server and ypcat to obtain sensitive material. You should feed encrypted password hashes into John the Ripper, and once cracked, you can use it to evaluate system access and privileges.
If during a nmap scan you see open ports like NFS but the port 111 is filtered, you won't be able to exploit those ports.\
But, if you can simulate a locally a portmapper service and you tunnel the NFS port from your machine to the victim one, you will be able to use regular tools to exploit those services.\
More information in [https://medium.com/@sebnemK/how-to-bypass-filtered-portmapper-port-111-27cee52416bc](https://medium.com/@sebnemK/how-to-bypass-filtered-portmapper-port-111-27cee52416bc)
Provides information between Unix based systems. Port is often probed, it can be used to fingerprint the Nix OS, and to obtain information about available services. Port used with NFS, NIS, or any rpc-based service.
<summary><strong>Learn AWS hacking from zero to hero with</strong><ahref="https://training.hacktricks.xyz/courses/arte"><strong>htARTE (HackTricks AWS Red Team Expert)</strong></a><strong>!</strong></summary>
* If you want to see your **company advertised in HackTricks** or **download HackTricks in PDF** Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
* Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)
* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** 🐦 [**@carlospolopm**](https://twitter.com/carlospolopm)**.**
* **Share your hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.