UCF STIG Viewer Logo

The SLES for vRealize must not have 6to4 enabled.


Overview

Finding ID Version Rule ID IA Controls Severity
V-239547 VROM-SL-000640 SV-239547r662092_rule Medium
Description
6to4 is an IPv6 transition mechanism that involves tunneling IPv6 packets encapsulated in IPv4 packets on an ad hoc basis. This is not a preferred transition strategy and increases the attack surface of SLES for vRealize.
STIG Date
VMware vRealize Operations Manager 6.x SLES Security Technical Implementation Guide 2021-07-01

Details

Check Text ( C-42780r662090_chk )
Check SLES for vRealize for any active "6to4" tunnels without specific remote addresses:

# ip tun list | grep "remote any" | grep "ipv6/ip"

If any results are returned the "tunnel" is the first field.

If any results are returned, this is a finding.
Fix Text (F-42739r662091_fix)
Disable the active "6to4" tunnel:

# ip link set down

Add this command to a startup script, or remove the configuration creating the tunnel.