STIGQter STIGQter: STIG Summary: VMware vRealize Automation 7.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-100367r1_rule

Vulnerability Number

V-89717

Group Title

SRG-OS-000142-GPOS-00071

Rule Version

VRAU-SL-000790

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Configure the TCP backlog queue size with the following command:

# sed -i 's/^.*\bnet.ipv4.tcp_max_syn_backlog\b.*$/net.ipv4.tcp_max_syn_backlog=1280/' /etc/sysctl.conf

Reload sysctl to verify the new change:

# sysctl -p

Check Contents

Check that the SLES for vRealize has an appropriate TCP backlog queue size to mitigate against TCP SYN flood DOS attacks with the following command:

# cat /proc/sys/net/ipv4/tcp_max_syn_backlog

If the TCP backlog queue size is not set to at least the recommended default setting of "1280", this is a finding.

Vulnerability Number

V-89717

Documentable

False

Rule Version

VRAU-SL-000790

Severity Override Guidance

Check that the SLES for vRealize has an appropriate TCP backlog queue size to mitigate against TCP SYN flood DOS attacks with the following command:

# cat /proc/sys/net/ipv4/tcp_max_syn_backlog

If the TCP backlog queue size is not set to at least the recommended default setting of "1280", this is a finding.

Check Content Reference

M

Target Key

3459

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