The F5 BIG-IP appliance must be configured to set the "Max In Progress Sessions per Client IP" value to 10 or less.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-260056	F5BI-AP-000239	SV-260056r947393_rule		Low

Description
The "Max In Progress Sessions Per Client IP" setting in an APM Access Pro?le is a security con?guration that limits the number of simultaneous sessions that can be initiated from a single IP address. This is particularly helpful in preventing a session ?ood, where a hacker might attempt to overwhelm the system by initiating many sessions from a single source. By capping the number of sessions per IP, this setting can help maintain the system's stability and integrity while also providing a layer of protection against such potential attacks. False positives may result from this setting in networks where users are behind a shared proxy. Sites should conduct operational testing to determine if there are adverse operational impacts. Log reports should be obtained to identify recurring IP sources within the user community.

Description

The "Max In Progress Sessions Per Client IP" setting in an APM Access Pro?le is a security con?guration that limits the number of simultaneous sessions that can be initiated from a single IP address. This is particularly helpful in preventing a session ?ood, where a hacker might attempt to overwhelm the system by initiating many sessions from a single source. By capping the number of sessions per IP, this setting can help maintain the system's stability and integrity while also providing a layer of protection against such potential attacks. False positives may result from this setting in networks where users are behind a shared proxy. Sites should conduct operational testing to determine if there are adverse operational impacts. Log reports should be obtained to identify recurring IP sources within the user community.

STIG	Date
F5 BIG-IP Access Policy Manager Security Technical Implementation Guide	2024-01-26

Details

Check Text ( C-63787r947391_chk )
If the site has documented that this setting has been tested operationally and is operationally harmful because of false positives, this is not a finding. From the BIG-IP GUI: 1. Access. 2. Profiles/Policies. 3. Access Profiles. 4. Click the Access profile name. 5. In the "Settings" section, verify "Max In Progress Sessions per Client IP" is set to 10 or less. If the F5 BIG-IP APM access policy is not configured to set a "Max In Progress Sessions per Client IP" value to 10 or less, this is a finding.

Check Text ( C-63787r947391_chk )

If the site has documented that this setting has been tested operationally and is operationally harmful because of false positives, this is not a finding.

From the BIG-IP GUI:
1. Access.
2. Profiles/Policies.
3. Access Profiles.
4. Click the Access profile name.
5. In the "Settings" section, verify "Max In Progress Sessions per Client IP" is set to 10 or less.

If the F5 BIG-IP APM access policy is not configured to set a "Max In Progress Sessions per Client IP" value to 10 or less, this is a finding.

Fix Text (F-63693r947392_fix)
Note: Implementation is OPTIONAL. This setting may break some known proxies. Testing should be performed in advance to prevent operational impact. From the BIG-IP GUI: 1. Access. 2. Profiles/Policies. 3. Access Profiles. 4. Click the Access profile name. 5. In the "Settings" section, set "Max In Progress Sessions per Client IP" to 10 or less. Note: If the setting is grayed out, check the box to the right of the setting and then update it. 6. Click "Update". 7. Click "Apply Access Policy".

Fix Text (F-63693r947392_fix)

Note: Implementation is OPTIONAL. This setting may break some known proxies. Testing should be performed in advance to prevent operational impact.

From the BIG-IP GUI:
1. Access.
2. Profiles/Policies.
3. Access Profiles.
4. Click the Access profile name.
5. In the "Settings" section, set "Max In Progress Sessions per Client IP" to 10 or less.
Note: If the setting is grayed out, check the box to the right of the setting and then update it.
6. Click "Update".
7. Click "Apply Access Policy".