Default SSL session cache size of ProxySG, ASG and SWG VA

Products

• Advanced Secure Gateway Software - ASG
• ProxySG Software - SGOS

Issue/Introduction

Determine the default SSL session cache size for each ProxySG, ASG or SWG VA appliance. After increasing SSL session cache by following TECH247135 you want to revert to original SSL session cache.

Resolution

Default SSL session cache size depends on total available RAM on the appliance. For ProxySG Appliances with 

RAM Size	4GB	6GB	8GB	12GB	16GB	24GB	32GB	40GB	64GB	128GB
Session Cache	12,231	20,844	20,949	31,434	41,847	41,894	55,875	69,903	111,799	223,647

 

 

 

 

 

 

Exceptions 

1. SWG VA V100 with 4GB RAM 5,369 
2. SWG VA V100 with 8GB RAM 8,113
3. SGOS 6.7.1.x / 6.7.2.x / 6.7.3.x for most devices session cache size is used as half of the size mentioned above to reduce overall memory usage. This will be reverted back again on 6.7.4.x and later versions.

For Advanced Secured Gateway(ASG) Appliances total amount of RAM is being shared between Proxy and CAS. SSL session cache default size is determined based on how much is allocated for Proxy.

Total installed RAM on ASG appliance can be found under https://x.x.x.x:8082/sysinfo --> under section /Diagnostics/Hardware/Info

To view how much is allocated or proxy Navigate to web UI of ASG --> proxy --> Maintenance --> Systems and Disks --> Summary --> Memory installed 

For example  ASG-S400-20 has total 24GB memory installed. For proxy 16GB is allocated. Hence SSL session cache default size would be 41,894