Disable DHCP Client in ifcfg

An XCCDF Rule

Description

For each interface on the system (e.g. eth0), edit /etc/sysconfig/network-scripts/ifcfg-interface and make the following changes:

Correct the BOOTPROTO line to read:
```
BOOTPROTO=none
```
Add or correct the following lines, substituting the appropriate values based on your site's addressing scheme:
```
NETMASK=255.255.255.0
IPADDR=192.168.1.2
GATEWAY=192.168.1.1
```

Rationale

DHCP relies on trusting the local network. If the local network is not trusted, then it should not be used. However, the automatic configuration provided by DHCP is commonly used and the alternative, manual configuration, presents an unacceptable burden in many circumstances.

ID: xccdf_org.ssgproject.content_rule_sysconfig_networking_bootproto_ifcfg
Severity: Unknown
References: 11 14 3 9

BAI10.01 BAI10.02 BAI10.03 BAI10.05 DSS05.02 DSS05.05 DSS06.06

CCI-000366

4.3.3.5.1 4.3.3.5.2 4.3.3.5.3 4.3.3.5.4 4.3.3.5.5 4.3.3.5.6 4.3.3.5.7 4.3.3.5.8 4.3.3.6.1 4.3.3.6.2 4.3.3.6.3 4.3.3.6.4 4.3.3.6.5 4.3.3.6.6 4.3.3.6.7 4.3.3.6.8 4.3.3.6.9 4.3.3.7.1 4.3.3.7.2 4.3.3.7.3 4.3.3.7.4 4.3.4.3.2 4.3.4.3.3

SR 1.1 SR 1.10 SR 1.11 SR 1.12 SR 1.13 SR 1.2 SR 1.3 SR 1.4 SR 1.5 SR 1.6 SR 1.7 SR 1.8 SR 1.9 SR 2.1 SR 2.2 SR 2.3 SR 2.4 SR 2.5 SR 2.6 SR 2.7 SR 7.6

A.12.1.2 A.12.5.1 A.12.6.2 A.14.2.2 A.14.2.3 A.14.2.4 A.9.1.2

CM-6(a)

PR.IP-1 PR.PT-3
Updated: about 1 year ago


for config_file in /etc/sysconfig/network-scripts/ifcfg-*; do
	if grep -q ^BOOTPROTO= $config_file; then
		sed -i 's/^BOOTPROTO=.*/BOOTPROTO=none/' $config_file
	else
		echo BOOTPROTO=none >>$config_file	fi
done

Disable DHCP Client in ifcfg

Description

Rationale

Remediation - Shell Script