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The vCenter VAMI service must limit the number of allowed simultaneous session requests.


Finding ID Version Rule ID IA Controls Severity
V-259137 VCLD-80-000001 SV-259137r935315_rule Medium
Denial of service (DoS) is one threat against web servers. Many DoS attacks attempt to consume web server resources in such a way that no more resources are available to satisfy legitimate requests. Mitigation against these threats is to take steps to limit the number of resources that can be consumed in certain ways. VAMI provides the "maxConnections" attribute of the <Connector Elements> to limit the number of concurrent Transmission Control Protocol (TCP) connections. This comes preconfigured with a tested, supported value that must be verified and maintained.
VMware vSphere 8.0 vCenter Appliance Management Interface (VAMI) Security Technical Implementation Guide 2023-10-29


Check Text ( C-62877r935313_chk )
At the command prompt, run the following command:

# /opt/vmware/sbin/vami-lighttpd -p -f /opt/vmware/etc/lighttpd/lighttpd.conf 2>/dev/null |grep "server.max-connections"

Expected result:

server.max-connections = 1024

If the output does not match the expected result, this is a finding.

Note: The command must be run from a bash shell and not from a shell generated by the "appliance shell". Use the "chsh" command to change the shell for the account to "/bin/bash". Refer to KB Article 2100508 for more details:

Fix Text (F-62786r935314_fix)
Navigate to and open:


Add or reconfigure the following value:

server.max-connections = 1024

Restart the service with the following command:

# vmon-cli --restart applmgmt