Removing size lime on ASM logs

Hi Utkc137,

By default, the BIG-IP ASM security policy implements a size limitation on HTTP requests. The BIG-IP ASM system drops HTTP requests that are larger than the configured request buffer size and logs the request as a violation on the Security > Event Logs > Application > Requests page in the Configuration utility. The default request buffer size is 10 megabytes. This size is configurable and the maximum value is 30 megabytes for BIG-IP ASM 11.x and later.

1. Go to Security > Options > Application Security > Advanced Configuration > System Variables
2. For Search By Parameter Name, enter long_request_buffer_size and select Go.

   The long_request_buffer_size parameter displays.

3. Select long_request_buffer_size.
4. For Parameter Value, enter the maximum length in bytes that you want the BIG-IP ASM security policy to accept

   You can increase the value of the long_request_buffer_size internal parameter to a maximum of 30 megabytes, by performing the following procedure

    

   

    

   

    

   
   Additionally, changing the long_request_buffer_size parameter value requires that you restart the BIG-IP ASM service, resulting in a brief traffic disruption.

   Note: The Auto-Accept and Policy Builder utilities do not support increasing the BIG-IP ASM request buffer size.

    Note: You must perform a 'tmsh restart sys service asm' for this change to take effect! If you are using a device group you must perform 'tmsh restart sys service asm' on all members of the device group for this change to take effect!

   root@(F5-Design_Engg02)(cfg-sync Standalone)(Active)(/mmon)(tmos)# restart sys service asm
   

   https://my.f5.com/manage/s/article/K01235989

   https://my.f5.com/manage/s/article/K7935

   https://my.f5.com/manage/s/article/K13367

    

   Hope this helps

   🙏