Ensure nis server services are not in use

HighLevel 1Automatedfreebsd

Description

The Network Information Service (NIS), formerly known as Yellow Pages, is a client- server directory service protocol used to distribute system configuration files. The NIS client ( ypbind ) was used to bind a machine to an NIS server and receive the distributed configuration files. The NIS service is inherently an insecure system that has been vulnerable to DOS attacks, buffer overflows and has poor authentication for querying NIS maps. NIS generally has been replaced by such protocols as Lightweight Directory Access Protocol (LDAP). Audit: rc.conf (sysrc) must not enable nis_server_enable.

How it is checked

Audit method: Shell command

shell

command -v sysrc >/dev/null 2>&1 || exit 1; r=compliant; for k in nis_server_enable; do v=$(sysrc -q -n $k 2>/dev/null); case "$v" in [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) r="$k=$v";; esac; done; echo "$r"

Expected output: compliant

How it is fixed

Fix method: Guidance or infrastructure patch

sysrc nis_server_enable="NO"; then stop the service (service <name> onestop)

Properties

Operating systems: Any
Tags: freebsdservices
Reference: CIS FreeBSD 14 Benchmark v1.0.1 - 2.2.5 Ensure nis server services are not in use

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

shell

tmaegis scan --target freebsd