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SSL VPN bandwith limited?

Steffen.
Hey guys,

we use with our Sophos SG 330 "SSL VPN" for our employee´s. Some of them complain about a slow connection speed and bandwith limitations when connected to VPN. The up- and downloadspeed seems to be limited at 1.5MB/s per client. It doesn´t matter if we download/copy files to the fileserver or download files from the internet with the enabled vpn tunnel. We also tested to access a dmz server from a private connection without vpn and could use the whole bandwith of the connection. QoS is disabled for every interface on our SG330.

What we´ve tried so far:

- IPS deactivated
- Web Filter deactivated
- Application Control deactivated
- UDP instead of TCP for SSL VPN

We use the following settings for ssl remote access:

Encryption algorithm: AES-128-CBC
Authentication algorithm: SHA1
Key size: 1024 bit
[x] Compress SSL VPN Traffic 

Is there some kind of bandwith limit for a vpn connection? Our site to site ip sec tunnel to our remote office uses definitly more than the 1.5MB/s bandwith.

Regards,
Steffen


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  • 0
    also are the clients using wifi or hardline?  If wifi which technology(a,b,g,n.ac)?  HOw many other devices are on the wlan and are they all the same technology(i doubt it).  What are they running the vpn clients on?  

    If hardwired how many other devices ar on that internal lan of theirs(including the aforementioned wlan devices)?

    There's tons of things on the other end that can cause issue.  There's no hard limits on vpn bandwidth that i know of but there's a host of things that can cause speed issues..[:)]

    Owner:  Emmanuel Technology Consulting

    http://etc-md.com

    Former Sophos SG(Astaro) advocate/researcher/Silver Partner

    PfSense w/Suricata, ntopng, 

    Other addons to follow

Reply
  • 0
    also are the clients using wifi or hardline?  If wifi which technology(a,b,g,n.ac)?  HOw many other devices are on the wlan and are they all the same technology(i doubt it).  What are they running the vpn clients on?  

    If hardwired how many other devices ar on that internal lan of theirs(including the aforementioned wlan devices)?

    There's tons of things on the other end that can cause issue.  There's no hard limits on vpn bandwidth that i know of but there's a host of things that can cause speed issues..[:)]

    Owner:  Emmanuel Technology Consulting

    http://etc-md.com

    Former Sophos SG(Astaro) advocate/researcher/Silver Partner

    PfSense w/Suricata, ntopng, 

    Other addons to follow

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