STIGQter STIGQter: STIG Summary: VMware vRealize Operations Manager 6.x SLES Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 28 Sep 2018:

The SLES for vRealize must manage excess capacity, bandwidth, or other redundancy to limit the effects of information flooding types of Denial of Service (DoS) attacks.

DISA Rule

SV-99245r1_rule

Vulnerability Number

V-88595

Group Title

SRG-OS-000142-GPOS-00071

Rule Version

VROM-SL-000760

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Configure SLES for vRealize to use TCP syncookies when experiencing a TCP SYN flood.

# sed -i 's/^.*\bnet.ipv4.tcp_syncookies\b.*$/net.ipv4.tcp_syncookies=1/' /etc/sysctl.conf

Reload sysctl to verify the new change:

# sysctl -p

Check Contents

Check that SLES for vRealize is configured to use TCP syncookies when experiencing a TCP SYN flood.

# cat /proc/sys/net/ipv4/tcp_syncookies

If the result is not "1", this is a finding.

Vulnerability Number

V-88595

Documentable

False

Rule Version

VROM-SL-000760

Severity Override Guidance

Check that SLES for vRealize is configured to use TCP syncookies when experiencing a TCP SYN flood.

# cat /proc/sys/net/ipv4/tcp_syncookies

If the result is not "1", this is a finding.

Check Content Reference

M

Target Key

3461

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