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Internet Speed is very slow, when connect to VPN
Posted: Mon May 27, 2024 11:43 am
by ramkunwar
Whenever I connect to SoftEther VPN (server running on cloud ), internet speed significantly drops to 2-4 MBPS.
However, without the VPN, much faster internet speed of 150-200 MBPS. Interestingly, when I connect to AWS VPN (Other VPN Server), the internet speed remains at a decent 50 MBPS, which is satisfactory.
I've diligently attempted various troubleshooting methods found online to resolve this issue, but unfortunately, none have proven successful thus far.
I treid below list of options with modifications
Maximum Number of TCP Connections
ENABLED/DISABLED SecureNAT
Maximum Number of TCP connections
Upload Bandwidth
Download Bandwidth
DisableKernalModeSecure
DisbaleRawModeSecure
suggest some solution or right approch to resolve this issue
Thanks!
Re: Internet Speed is very slow, when connect to VPN
Posted: Mon May 27, 2024 11:52 am
by solo
Re: Internet Speed is very slow, when connect to VPN
Posted: Mon May 27, 2024 1:17 pm
by ramkunwar
Code: Select all
Item Name | Normal View|Simplified View
------------------------------------------------------+-------------------+---------------
Time Span for Measurement | 00:00:15.008|
Data Correction for Ethernet Frames | Yes|
Communication Data Volume in Download Direction |1,481,281,517 Bytes| 1.48 GBytes
Communication Data Volume in Upload Direction | 582,305,878 Bytes| 582.31 MBytes
Total Communication Data Volume |2,063,587,395 Bytes| 2.06 GBytes
Relay Device Input Output Total Throughput Computation| No|
Average Throughput in Download Direction | 789,595,691 bps| 789.60 Mbps
Average Throughput in Upload Direction | 310,397,589 bps| 310.40 Mbps
Total Average Throughput | 1,099,993,280 bps| 1.10 Gbps
Re: Internet Speed is very slow, when connect to VPN
Posted: Tue May 28, 2024 8:50 am
by ramkunwar
Code: Select all
VPN Server>ServerInfoGet
ServerInfoGet command - Get server information
Item |Value
--------------------------------+-----------------------------------------------------------------------
Product Name |SoftEther VPN Server (64 bit)
Version |Version 4.42 Build 9798 (English)
Build |Compiled 2023/06/30 11:06:58 by buildsan at crosswin with OpenSSL 3.0.9
Host Name |VPN-SERVR-CPX11-US-EAST
Server Type |Standalone Server
Type of Operating System |Linux
Product Name of Operating System|Linux
Operating System Vendor |Unknown Vendor
Operating System Version |Unknown Linux Version
Type of OS Kernel |Linux Kernel
Version of OS Kernel |Linux Kernel
Re: Internet Speed is very slow, when connect to VPN
Posted: Tue May 28, 2024 8:53 am
by ramkunwar
Code: Select all
VPN Server>BridgeList
BridgeList command - Get List of Local Bridge Connection
Number|Virtual Hub Name|Network Adapter or Tap Device Name|Status
------+----------------+----------------------------------+---------
1 |DEFAULT |eth0 |Operating
The command completed successfully.
Re: Internet Speed is very slow, when connect to VPN
Posted: Tue May 28, 2024 11:36 am
by solo
OK, more info is trickling in, yet you still have not posted what was asked for. Before you do, try another config to resolve this issue - do not bridge eth0 directly but create a SE soft tap and then bridge it to eth0.
Re: Internet Speed is very slow, when connect to VPN
Posted: Sat Jun 15, 2024 7:00 am
by LeeHS
Maybe turning on "Disable UDP Acceleration" and "Disable NAT-T" can increase the speed. This feature is in the VPN properties and advanced settings of SoftEther VPN Client.
Re: Internet Speed is very slow, when connect to VPN
Posted: Mon Oct 21, 2024 3:54 am
by slitherince
I recommend changing the VPN protocol to UDP and adjusting the MTU settings to around 1400 bytes.