← Back to VMware vRealize Operations Manager 6.x SLES Security Technical Implementation Guide

V-239547

CAT II (Medium)

The SLES for vRealize must not have 6to4 enabled.

Rule ID

SV-239547r662092_rule

STIG

VMware vRealize Operations Manager 6.x SLES Security Technical Implementation Guide

Version

V2R2

CCIs

CCI-000382

Discussion

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.

Check Content

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

Disable the active "6to4" tunnel:

# ip link set <tunnel> down

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