Detections
Analytics
SLEM-05-254035 - SLEM 5 must not be performing Internet Protocol version 6 (IPv6) packet forwarding by default unless the system is a router.
Information
Routing protocol daemons are typically used on routers to exchange network topology information with other routers. If this software is used when not required, system network information may be unnecessarily transmitted across the network.Solution
Configure SLEM 5 to not performing IPv6 packet forwarding by default by running the following command as an administrator:> sudo sysctl -w net.ipv6.conf.default.forwarding=0
If "0" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf":
> sudo sh -c 'echo "net.ipv6.conf.default.forwarding=0" >> /etc/sysctl.d/99-stig.conf'
> sudo sysctl --system
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_SLEM_5_V1R4_STIG.zip
Item Details
Category: CONFIGURATION MANAGEMENT
References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-261326r996448_rule, STIG-ID|SLEM-05-254035, Vuln-ID|V-261326
Plugin: Unix
Control ID: bcd76b7874a6d9cab2b8863ff0adba5518ebacb7b3c3475219016d68b8e644ca