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Re: [tlug] Tokyo ISP Throttling? Why does my internet speed increase so much by setting up a proxy?
- Date: Mon, 22 Feb 2016 12:06:16 +0900 (JST)
- From: Tim Osburn <email@example.com>
- Subject: Re: [tlug] Tokyo ISP Throttling? Why does my internet speed increase so much by setting up a proxy?
- References: <CAAcd6GqhTNOq=vmX7Yr4uEZM5Ef1zxqRdh-kOe612vis3j-D6A@mail.gmail.com>
On Sun, 21 Feb 2016, Jawaad Mahmood wrote:I'm very confused about this. I am running NTT Flez Hikari to my mansion; it's slow as molasses.However, today I setup a Squid3 proxy server on a cloud server I own. When I connected to that (and connected my wife), all of a sudden all sorts of slow / dropped connection problems went away.Jawaad, Sorry for the long reply, this Email sorta grew and got out of hand. :)You mentioned NTT Flez Hikari, which I believe NTT only provides the line/pipe between your home modem and the provider/ISP (NTT is basically like a layer 2 provider in a sense). Then you also have the provider/ISP which you didn't mention which provides the internet over that pipe (layer 3 and up). If it's not consistent I would probably rule out NTT as the issue and look at your ISP. But that may not always be the case.Who is your ISP Is your traffic to your squid proxy encrypted? 1) Are you using WIFI at home when there is slowness? There could be RF interference from neighbors Access Points or cordless phones if that's the case causing poor performance and packet loss. If so try plugging in a cable and not using wifi. 2) Perhaps your route to the destination has changed. It's possible your provider/ISP has poor internet peering to their providers and the route to where you are going is sub optimal or the peering point is congested, dropping packets or taking on errors. You might also provide a 100 iterations for the destinations through a program called MTR (Matt's TraceRoute). It might help show you points along the path that may be congested or suspect of poor quality. Unix https://www.bitwizard.nl/mtr/ https://github.com/traviscross/mtr Windows http://winmtr.net/download-winmtr/ https://sourceforge.net/projects/winmtr/files/Latest/ 3) Your provider/ISP may be traffic shaping, throttling or doing some sort of bandwidth management/deprioritization on specific traffic that is effecting your through put when not using your proxy. Then when you use your proxy they don't see that traffic or touch it since it's either on a unknown WEB port or because it's encrypted and they have no idea what it is. A large mobile provider in the US did this or may be still doing this on mobile phones. They also at one pointed added in additional identifiable headers to web requests that were not encrypted when you browsed to sites. Something like the below can allow you to detect that. Example: http://www.osburn.com/info/ https://www.osburn.com/info/Is it also possible your proxy is compressing your data which in turn results if typically what looks like faster connectivity?4) It's possible they are doing packet inspection so when you tunnel to your device using TLS/SSL they can not see into that so they just pass it without inspecting or adding latency to that. 5) Have you eliminated the possibility of something "local" between your PC and your NTT Modem that might be effecting your traffic? In line or software based? Try rebooting your router and/or modem. Disable your firewall/anti virus software as quick test. Does it only effect your computer? Also it's very important to also check your MTU settings on your device that connects to your provider if that they are doing any sort of encapsulation between you and them. Not having that right will result in dropped packets and what might seem as slow connectivity. Your provider should be able to tell you what your MTU should be, if PPPoE then you might try a MTU setting of 1454 instead of the tyical default ~1490. 6) Like others have mentioned it is also possible others in your building could be consuming lots of internet as well. If your mansion is anything like ours where there are lots of people in it, it's likely NTT has several fibers into your building. On each fiber (for example our building) they typically will put up to 16 customers on a single 1GigE fiber. Customers in our building have several speeds to choose from which max out at 100mbps up/down over. It could be if you complain and they have multiple fibers into the building, they might be able to move you over to another fiber that might not be as congested as the one you are on. Of course that's only if that's really is the case. It also may take several calls and complaints to motivate them to do that also as they will need to send someone out to your building to physically move your connection over to another node. Also in our building NTT is not the only "line" fiber/teleco. At our building there 2 other telecos that have fiber into our building. Then also each of those telecos have a list of providers/ISPs you can then choose from. Lots of choices and sometimes hard to know which to pick. So maybe you might have more options then you know, talking to your building manager might help you discover if you have additional choices other then NTT as a line telco. Switching providers may also be what you need to do if it turns out to be the provider and not the line carrier. Just to clarify the terms: LINE = The circuit between your outlet on the wall to your ISP Provider ISP/PROVIDER = the ISP that is proving you IP access to the internet (layer 3)I've been told that in Japan, these are typically not the same companies. Where as in the US they typically are the same company.6) You just might give your provider/ISP a call and tell them whats happening, they may have something miss-configured or know about a sub optimal routing issue that is effecting their customers. 7) Do you have a encrypted VPN service you can also test, how does it compare when using that? Try MTR with and without a full on encrypted VPN and see how your times look using that as that will force you to take a different path. Tim Osburn http://www.m2os.com W7RSZ / JG1MBR https://instagram.com/tim.osburn/
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