Skip to main content
maraica
maraica
New Member
June 20, 2019
Solved

Slow internet speed & file sharing while connected to VPN

  • June 20, 2019
  • 1 reply
  • 21796 views

Hi Everyone, 

 

We have a SSL VPN for our corporate users on a Fortigate 5001V (daily average users 10-15).  Everyone internet speed slows down as soon as they connect to vpn.  Below are some examples of speed test without and with vpn.  Please let me know if this is normal expected behavior slow down or if there is something that we can do to improve the situation.  I can also provide tracert if need be.  We do have a manage network so I do not full cli access to the blade, but I can pass any recommendation to our manage provider company:

 

The issue is more significant and a pain point when users map a server shared folder and they try to save or dowload the file.  The VPN blade is in the west coast and most share folders are also in the west coast.  I do expect some slowness while updating huge excel files in the NY shares drive folders.  Our typical time from vpn or from mpls is always consistent at 75ms from LA to NY (while on vpn or mpls is always at around 73ms), so I think the culprit could be the fortinet 5001v.  

 

 

100/100  -> on vpn 20/10

300/20  -> on vpn 30/3

70/10 -> on vpn 15/2

175/5 -> on vpn 15/5

 

thank you

 

Manuel

    Best answer by hubertzw
    https://help.fortinet.com/fos50hlp/54/Content/FortiOS/fortigate-hardware-acceleration-52/acceleration-overview.htm

    1 reply

    hubertzw
    hubertzw
    New Member
    June 20, 2019

    I understand you compare the Internet speed between their own Internet connection in their locations, not Internet available from the location where FortiGate is installed, correct?

     

    Can you verify the device model? FortiGate has some 5k models but I don't see 5000v. Is it physical appliance or VM?

    maraica
    maraicaAuthor
    New Member
    June 20, 2019

    Yes, these are remote users joining the ssl vpn mostly from home.  

     

    It is the 5000 series in LA datacenter.  It is a physical appliance.  We rebooted last night to see if things improved but no luck!

    FortiGate® 5000 Series Solution Scalable Data Center and Carrier-Graded Security Systems

     

    I will verify the specific model

     

    thanks

    hubertzw
    hubertzw
    New Member
    June 20, 2019

    By this hardware specification FG-5001E devices has 9Gbps throughput for SSL VPN.

    https://www.fortinet.com/content/dam/fortinet/assets/data-sheets/Fortinet_Product_Matrix.pdf

    You shouldn't have any problems with the platform. What is the software version?

    Terms & ConditionsAccessibility statement