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Site-to-Site VPN - Speed

zeus1976

Hello,

Due I have to transfer 100 GB to my friend recoginized that the upload is very slow (1.57 Mbps) into an VPN Tunnel. Site A (Home) ->> friend (Upload my data from home). I have disabled all feature and check following configuration:


- Web-Proxy disable

- Application Control disable

- Intrusion Prevention disable

- QoS disable

- activate in the VPN configuration "Support path MTU discovery"

- checked the Internet speed without VPN: Download 220 Mbps / Upload 23 Mbps

- changed the MTU to 1392 (Cablecom Modem) & UTM

Question:

Have the cablecom modem and the Sophos UTM the same MTU Size? At the moment everthing is 1500 or I testet 1392 on both devices.

Notice: Internet connectin is 250 / 25

Do you know this issue? Any ideas what I can check?

Thank you for your help.

Best regards



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  • 0

    Does #7 in Rulz give you any hints?

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
  • 0 in reply to BAlfson

    Hello Bob,

    Thank you for your answer. In the meanwhile I did another check (FTP Access to my Location):

    • Location Home:
      • FTP Server - NAT Rule - Firewall Rule (FTP Server is a Synology Server)

    • Location B:
      • Access from Location B to Location A (FTP Server from Location Home - Download a File) (1GB)

    Speed Result: 22 Mbit (Upload max 25Mbit)

    Now everthing is pointing to the VPN Connection and after checking the list from Bob I can exclude the follwing points:

    1. NIC Problem is excluded

    2. QoS is not the problem

    3. Fullduplex is not the problem

    4. Switches are all ok

    Remark: MTU Change on the WAN Side didn't help unfortunately. Have somebody another idee? Thank you for your help.


    Best regards

  • 0 in reply to zeus1976

    Hello,

    Somebody have an idee?

    Thx.

    Best regards

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