Sure (if Checkpoint allows)
How to increase / disable max_header_length
Solution ID | sk44674 |
Product | IPS |
Version | R70, R71, R75, NGX R65, R76, R77 |
OS | SecurePlatform, Windows, Linux |
Platform / Model | All |
Date Created | 28-Apr-2010 |
Last Modified | 18-Feb-2014 |
Symptoms
- Drops in SmartView Tracker: 'exceeded max_header-length' for product Smart Defense / IPS even though the value was changed under Smart Defense / IPS.
Cause
It was not changed for all instances in Smart Defense / IPS. Each profile has its own setting. All the settings need to be changed.
Solution
On the Security Management via GuiDBedit.
1.Log out of all smart console applications.
2.Log in to GuiDBedit.
3.Search guidbedit for the following data string http_max_header_length.
Make sure the value is the value you want it set to on all profiles (detailed below). The default is 2100, max is 12288. (Left side shows current value changeable, right side shows default value not changeable).
Then click Ctrl+F and click find next. You should see this parameter for each of the following object names. For each of them, perform the change. They should, but might not appear in the following order:
AdvancedSecurityObject
TemplateAdvancedSecurityObjectConnectra
DeactivatedAdvancedSecurityObject
AdvancedSecurityObjectConnectra
TemplateAdvancedSecurityObject
RecommendedAdvancedSecurityObject
If Smart Defense / IPS is deactivate and the issue persists (traffic still being dropped), adjust the DeactivatedAdvancedSecurityObject to the desired length.
4.After performing the changes, save and exit.
5.Install policy.
6.If the drop is still present, consider increasing the value even further.
In case the solution fails completely, consider disabling http_max_header_length enforcement:
1.Log out of all smart console applications.
2.Log in to GuiDBedit.
3.Search guidbedit for the following data string http_enforce_max_header_length.
Change it's value from true to false on all profiles:
AdvancedSecurityObject
TemplateAdvancedSecurityObjectConnectra
DeactivatedAdvancedSecurityObject
AdvancedSecurityObjectConnectra
TemplateAdvancedSecurityObject
RecommendedAdvancedSecurityObject
4.After performing the changes, save and exit.
5.Perform cpstop and cpstart on the Security Management.
6.Install policy.
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