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Any Linksys 1900 ACS users in the room?


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#1 the1lemming

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Posted 18 November 2017 - 03:25 PM

If you have a Linksys 1900 ACS router and you have it set up as a VPN Client, would you be willing to share your Internet speeds?

 

 

I am trying to work out if I my router configured correctly and if I have maxed out its encryption abilities.  At the moment my encrypted speeds hover around 40-45mbps. 

 

I'd just like to know if I could squeeze out a little more with a bit more tweaking.

 

Cheers.

 

:-)



#2 zhang888

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Posted 18 November 2017 - 06:32 PM

OpenVPN 2.4.0 and above supports AES-256-GCM which might improve your performance.

You need to find a firmware which supports it.


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#3 the1lemming

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Posted 18 November 2017 - 06:53 PM

OpenVPN 2.4.0 and above supports AES-256-GCM which might improve your performance.

You need to find a firmware which supports it.

 

You'll have to forgive me with my lack of IT experience as I do not understand your very brief reply.

 

Could you please tell me what AES-265-GCM is and how it is better/faster than the AES-256-CBC that my Linksys router is using?

 

How would I be able to check what version of OpenVPN I am using to confirm if it is version 2.4.0?

 

And could you tell me if you use a Linksys 1900ACS router as mentioned in the OP?

 

Thank you



#4 zhang888

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Posted 18 November 2017 - 07:18 PM

Your OpenVPN version should be in the log file of the VPN connection, which can be either in GUI and most definitely available

by telnet/SSH to your router's firmware.

AES-256-GCM has a smaller overhead and it performs better especially on embedded devices like routers.

 

Depending on the firmware you are running, OpenVPN 2.4.0 might be available, my recommendation is LEDE firmware (OpenWRT fork).

DD-WRT or Tomato might have versions for it as well, but you will have to check their wiki for this.

 

I always travel with a router with the same Marvell Armada 385 CPU (Turris Omnia) and the speeds are around ~80-90Mbit.


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#5 the1lemming

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Posted 19 November 2017 - 03:28 PM

I always travel with a router with the same Marvell Armada 385 CPU (Turris Omnia) and the speeds are around ~80-90Mbit.

 

 

This is the confusing part for me.  Back in February I was getting speeds of 80 to 100Mbps and these speeds were confirmed by the AirVPN Support Team along with a forum contributor who had the same router and got the same speed results as confirmation.

 

I am not sure when things changed however today I can only get speeds ranging from 30-45Mbps at the very best.  If I use the Eddie software on my desktop computer I get Throughput/Download speeds of 110-115Mbps speeds.

 

Only two things have changed since February.  The first thing is that my Internet Service Provider doubled my Internet speeds at no extra cost.  The second thing to change was that my Internet Service Provider gave me a new free router to cope with these new speeds.  The free router is working in Modem Mode only and is connected to my router which is doing and the VPN encryption.

 

I am very confused as to why my AirVPN Throughput/Download speeds have dramatically dropped by 60% in just six months.

 

I have tried asking AirVPN Support and the only answers I get are that I am getting a good speed, which is very good, and that my throughput speeds are reliant on the Router processor.

 

Sadly AirVPN Support has not addressed how or what could have caused a 60% drop in speed while using their VPN Service.  I am only told that my Router has limitations because the processor is not as powerful as a Desktop Processor.



#6 lostboy

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Posted 21 November 2017 - 01:29 PM

Hi

Going to make a guess that you are on VM in the UK? If so, is your protocol UDP / port 443? If so change to TCP / port 80. If not, ignore me :)



#7 the1lemming

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Posted 22 November 2017 - 09:45 AM

Hello,

 

I was sceptical about changing the port after a few random attempts at different combinations and not getting any advice about ports from the AirVPN Support team however I gave  your suggestion a go.

 

And, I must say that I am genuinely impressed because my internet speeds doubled immediately.

 

I'm now hitting around 80mbps and with a bit more tweaking I'm sure I can get more.

 

I doubt that the router can exceed much beyond 100mbps but lets be realistic, I am comparing a domestic router's processing power against a desktop Intel i7 processor.

 

My desktop using the Eddie software can hit 150mbps and my little router has  the potential to hit 100mbps, surely this is a phenomenal result for such a small outlay on minimal hardware?

 

BTW

How did you know that port 80 was a good choice?



#8 lostboy

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Posted 22 November 2017 - 10:35 AM

Great news. It was the protocol - UDP - VM throttle it ;) 80mbps is good. I have a similar but lower spec router and get about 55mbps. For 200mbps + , use a VM with 3 CPU core's assigned via Eddie.

EDIT

You'll need to setup policy based routing though, to use Eddie and a VM or else you'll be routing your VM's Eddie VPN connection through the router VPN which will slow things down more. To do this the easiest way is to work out what IPs you want to use the router VPN and add those IP's in the policy based routing section of your gui with a /32 netmask. ie "192.168.100.10/32"



#9 the1lemming

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Posted 23 November 2017 - 08:25 PM

Good Evening Lostboy,

 

I am very sorry but my technical knowledge is very rudamentary and I did not understand any of the last reply you made.  Please forgive my lack of knowledge.

 

However I must state that I do not use the Eddie software on my desktop computer at all.  I let my router do the work.

 

Cheers







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