Rule ID
SV-260056r947393_rule
Version
V2R4
CCIs
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.
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.
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".