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Old 23-May-2003, 11:36
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Lightbulb Emule tweak tips guide / how to speed up emule ed2k network client

I've put mirror of this guide at Emule tips guide - it will remain there also so please feel free to link to it

Specific emule connection speed up information and tips are at towards the bottom of this post (see 'Emule connection tweaks').

You may wonder why you should use emule in place of edonkey, well that's a matter of choice, I prefer emule, it's open source and very regularly updated. Changing from edonkey is very simple, just download the zip file and copy the files into your edonkey directory (perhaps backup the directory first!).

What Is Emule / Edonkey?: emule is a popular peer2peer / p2p file sharing client, it's an open source version of edonkey and uses the same ed2k / edonkey2000 p2p network. Most of the edonkey tips are therefore applicable. Emule is a little like napster, the differences from napster include: It has many servers in many countries which are unlikely to be shut down. It allows sharing of any file type (not just mp3's). It does multiple source download, i.e. it will retrieve the file from many places at once, it can give a very fast download (like 60 Kbytes/sec on 512/256 ADSL).

The real strength of emule is the content, the amount of high quality downloadable content beats most any other p2p networks currently, this is especially so for large files like movies (700 megs plus). A strong sense of community is created by ed2k link sites which sets emule and edonkey apart from most other p2p networks. A verified ed2k content link guarentees the file you download is correct, the link itself contains a 'hash' (long number or string) that says exactly what data the finished file will have, you need never download a 'fake file' again!

See the ed2k links at the bottom of this post for more details.

Here's a few tips to serve as a guide which should help improve emule download speeds, I'll post more as I get round to it, please add advice or tell us about your emule settings and tweaks if I haven't covered it

In no particular order:


Dont pen your emule in!: emule (along with other p2p progs) behaves like a 'server', that means it wants to accept connections from other 'peers'. If you trust that emule is relativly secure then you should allow it *full access* to the internet. It's easy to believe that running a firewall and only allowing emule to connect in certain ways makes you more secure, I think that is wishful thinking! If you run a firewall then I'd advise allowing any connection to emule both udp an tcp incoming and outgoing, anything else will not allow edonkey to work at its best.

You can check how 'penned in' your emule is by looking at the bottom right of the client window, if you are connected to a server then the little icon should have green arrows round the logo, e.g.



Sometimes the server is too busy to give you a proper connection, try re-connecting to another server if the id is normally high (green icon) but you have been given a low id / emule is penned in (icon is yellow). The number is an ID which emule gets when it connects to a server, a low number (like 150 or so) indicates you are penning your emule in, the number needs to be in the many millions for true emule usage.

Another good source of information on this is at http://www.edonkey2000.com/documenta...reachable.html.

Emule can use configurable ports, the ports it will use are listed in

'preferances' > 'connection' in the 'client port' area.

If you are behind a NAT / router these ports need to be mapped to your internal network IP address and any firewalls you have should allow these ports to be connectable from the internet. The port on the left is TCP the one on the right is UDP. On mine I allow both inbound from any IP by configuring my firewall / NAT. I don't personally believe emule is totally secure (no software is w/o bugs!) but forceing emule to connect via a server may not make it any more secure or could even make it less secure (in theory at least), it depends on what exploit is found, just keep an eye out for new versions and updates


Cap the upload: (on a broadband connection anyway) The reason to do this isn't so you share less, emule and the edonkey network needs people sharing or no one gets anything. When you are downloading data for each little bit that emule downloads it must send an 'ack' (acknowlegement) if your upload stream is running at your connection limit these 'acks' wont get back/will be slowed down so you won't be sent the next little bit. Set the upload cap to about 70% to 90% of your total upload total capacity should improve download speed, so for instance if you are on 512/256 ADSL the max upload is about 25k/sec, set the upload cap at about 20k/sec in the options. Emule has a built in ratio mechanism, if you set the upload less than 10 or 11k/sec you will be 'punished' (i.e. your download speed will be severly capped which I think is kinda good!). You can tell if you have set the cap too low because the upload speed will be set to a fixed value when you close and re-open the window.

The setting is in 'preferances' > 'connection' in the 'limits' part on the right.




Use a links website: I think using a 'ed2k links' website is the way to go, many people use these sites and therefore the listed version of a file is likely to be available from more sources (better spread). Searching emule / edonkey network yourself is good for things which are a little obscure but you can often get some really great ideas on what to get next by looking at sites which list lots of emule / edonkey content (see the ed2k links thread). Also check out a service called jigle (again see links thread) as it does a good job of searching the edonkey / emule network and will show the different names a file is shared with.


Emule connection tweaks: If you use NT/XP or win2k then you can really tweak up some of the settings, assuming your router / NAT and PC that runs emule will handle it. Win98 doesn't do such a good job managing network connections and a slow PC (p300) won't handle much tweaking either. Some router / firewalls will spit the dummy at the large amount of entries in the NAT table if you tweak these too high (you have been warned!). These are the values I use and they seem to work for me, try tweaking them is all I suggest and let us know how you get on!

Some popular content is so well spread there are literally 1000's of people sharing the same file, emule and the edonkey network is very good at finding sources for the file you want, this is where you client's config could limit or increase your download speed.

On the connections screen (see below) you can set the 'max sources per file', I have set mine to 2500, I have seen this limit reached but 2500 seems enough generally. The other setting 'max connections' is total connections for your client, since most of the time I download 2 popular files at once (tops) I have mine set to twice the 'max sources per file' (I doubt I ever get to this limit!). You can check if the 'max connections' is ever reached, it's on the statistics window

'Statistics' (window) > 'Connection' > 'Max Connection Limit Reached'

I have never seen mine show anything other than 0 (i.e. limit not reached).



The other interesting setting is in the

'Preferances' > 'Extended Settings'

The 'max. new connections / 5secs'

Here again is dependant on your OS and the speed of your PC as well as the NAT (I suspect most NAT setups can handle quite a high value). This setting tells the client how many new connections it can make in a set period of time (obvious really!). I have mine set to 1000, it's not going to make as big a difference as the 'max sources per file' (above) but is will help a small amount when you start a new file that is well spread.

The last setting on the same window is 'use credit system', if you assume most people have this turned on and you turn it on also it will speed up transfers between you and others trying to get the same file. The way that emule identifies and remembers clients has changed (from 29c the new behaviour is the default) to use a unique generated public private key pair (see emule 29c available for more details) which means that you will still keep your credits even if your IP changes.


Download priority: On the main 'transfer' window you can right click and set the priority of a download, this option is used to determine which of the files you are downloading get priority. Emule stops you downloading multiple files from one person at the same time, so where another client may have all the files you need you can only be queued for one of those, so set this to 'high' for the most urgent download (or perhaps set it 'high' for the download with the least sources on the network).


Faster queue turnround (credit system) This is a little tweak you can do if you are bored waiting for a specific file and you have other files shared.

Let's say you have 20 completed files shared and you start downloading a new file. It's likely that your upload queue is full of people downloading the other files you are sharing, this stops people downloading the new file from you as they get stuck somewhere down the queue, in turn your credit rating is lowered as you download parts from them but they don't download from you.

A way round this is to goto the 'shared files' tab and find the file you are downloading, set this to 'release' (the new file will only appear once you have downloaded a few megs of it). Setting to release gives priority to the file and people trying to get this file from you get priority in your upload queue, thus allowing faster turn-round of credits for the file.

It's not that clear it makes that much difference (or perhaps any) but if you are bored try it out and let me know what you think, it's only useful if you share other files (hopefully you do! )


Security If you have win2k or XP then a good little security option added recently is the "Run eMule as Unprivileged User". It works by creating a user account on your PC that has less access to sensitive files and system controls. If you normally login to your PC as an Administrator level user then this is a really good thing to turn on. Setting is in "Preferences > Security" down the bottom.


Kad Network Kad is an alternate way for clients to find each other rather than using the main ed2k server system (it's a good idea to use both Kad and the ed2k servers).

There's not a great deal to say about this, just turn it on and connect it. To enable Kad goto "Preferences > Connection" and check "Kad" in the bottom right corner. To connect to Kad should be simple, goto the Kad icon at the top of Emule and the first time press "Bootstrap", it should just connect. If you look in the "Servers" window under "My Info" it should show connected (note that you don't want it to include the word "Firewalled" - since you won't get as good connectivity that way).


Patience Last but not least, new users of emule may do all the tweaking and select a well spread file from a popular ed2k links site, watch the screen for an hour and wonder why they have only downloaded a few kbytes.

Emule works by downloading off clients and uploading to clients, many people run emule 24/7, they probably have over 1000 people waiting to download something from them. You are only going to get to the head of their queue after some waiting. If I look at the stats on my emule it shows most of the people currently downloading from me have waited over a day to get a download (this isn't unusual I think!).

I suggest leaving it running 24/7 if you can, stopping and restarting it may mean you loose your place in the queue. As a rough estimate emule doesn't really get going till after a few hours, sometimes longer, the longer you can leave it on the better!


A seperate thread exists for ed2k links please add more ed2k links if you know of them!

Have fun sharing

Sil

PS, my NAT / firewall solution I made a seperate post about, easy introduction to a neat setup <thread>:Make Your Own Router - secrets revealed

Last edited by silver; 30-March-2005 at 08:16.
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Old 23-May-2003, 12:19
Tony
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thanks am trying that, would it not be better to set the upload capacity lower??
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Old 23-May-2003, 12:33
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yes and no, the upload capacity should not be set lower than 10 or 11 kBs , if you connection is 512/256, setting it lower puts you on a sliding scale of reduced download (you will notice this if you set it lower than 10 I think). This allows it to work nicely for those on dialup, since setting the upload to a low value (2 kBs for dialup?) won't affect their download (since it's quite low also).

You could as you say set the upload limit to 12 or 13 kBs and the download is still unlimited, but for a number of reasons I don't think this is the best idea. Firstly emule / edonkey network relies on people sharing, the more people give the better for all (a kind of 'moral' thing!). The way the credit system works means that the more you give the better your rating and the quicker you get the files you need, there's no simple way to avoid the credit rating sytem (thankfully!). Lastly, why limit when you probably aren't using the upload capacity of your connecton for anything else, so long as you give yourself a 5 KBs margin or so then lettting emule use the rest isn't going to affect your general usage in most cases, your surfing and other downloading isn't using the upload so isn't really affected?

That's my personal view, each must decide for themselves I guess

Sil

edit - there's no doubt ways of hacking the client to avoid the sliding scale that relates download to upload capacities, I think this is a bad idea for the above reasons!

Last edited by silver; 23-May-2003 at 12:37.
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Old 23-May-2003, 13:16
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oops - may not have answered your question, I though you meant 'limit' not capacity, the capacity settings on the left are only used in the statistics graph. On mine I have the download window twice the scale of the upload one so it's easier to see what's what. I also have changed the timeline to 8 hours so I can see what happened overnight

Sil

PS, added 'download priorty' text into first post.

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Last edited by silver; 22-January-2006 at 11:31.
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Old 23-May-2003, 13:29
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ahhh i see. will get back to it in a bit and look
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Old 18-June-2003, 11:24
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Tony,

Did you notice any difference?

Sil

PS,. General Note: Not sure I was clear but to add, increasing the max sources is only going to make a difference when a file is *very* well spread, in effect it just makes your client queue itself with more peers/clients for that file.

There's no magic in p2p, you best you can get download is the combined speed of all the uploads (well it is stating the obvious but worth stating perhaps!).
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Old 18-June-2003, 12:20
Tony
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hi sil

yes it certainly seemed to make a differance, always difficult to prove as speeds can be all over the place as you know,

have had to do a re-install of XP and all software and have not got round to modifying mule again and it seems to be slower.

one thing is certain your mods did not make it worse so they are worth doing
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Old 18-June-2003, 16:39
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kewl

for a well spread file it should make a measurable difference, should be able to max out your download most of the time

I don't think theres is a downside as such, some would argue that if there's more current downloads than your download bandwidth can handle that it's not an efficient use of the p2p network, i.e. you would be stopping others downloading. There's a small grain of truth in that, obviously if you are maxing your download bandwidth totally then you may want to change the download priority to 'normal' or 'low' and/or reduce 'max sources per file'.

Leaving 'max sources per file' on a high value if the file you want isn't well spread doesn't appear to use any more resources, in so far as tcp or udp connections (I don't know internally what emule does) so shouldn't have any ill effects

Sil
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Old 24-August-2003, 02:25
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added part titled 'Faster queue turnround (credit system)', it seems to make a difference to me, I have 30 or so files shared at any one time and increasing the priority for a file I want to get quickly seems to help,. or perhaps I imagine it!

there's some other tricks I have thought of which I will get round to posting at some point,. there's a neat trick to mess with the credit system which I may post once I check it works

Sil

PS,. I hope you find this guide useful, if so please consider linking it from other forums or sites you visit, it's linked from a few already and I often check the weblogs,. it's nice to see peeps linking it

Last edited by silver; 27-July-2004 at 14:27.
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Old 18-September-2003, 11:05
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Is there any way to alter the number of uploads?
I know 8 at time aint that much but I would prefer 5 at a time.

Using a Netgear DG814 with it's latest firmware, and the firmware is a bit unstable, router is quite easy to crash with too many active connections :|

Had to update the firmware as all previous versions were causing DDOS attacks on a NTP server that was set in the router (silly netgear) new firmware has a list of 8 of them, previous ones only had 1 server, and it would keep hammering that server untill it got a reply. (shame ya can't pick yer own as pipex has it's own ntp servers)
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Old 18-September-2003, 14:13
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Not in emule (there could well be a mod'd emule that lets you) as far as I can tell the number of users in the current uploads list is roughtly based on the upload speed you have set . On mine it seems to give each uploader about 3.5k (well that's how it looks on mine) so the more upload capacity you set the more people that will be allowed into the current uploads queue.

router crashes, the setting that should help here is the 'max connections' - if you set this to 50 or something (experiment is the way to find out what value is best) should help a lot,.. this is not the same as 'max sources per file' which can still be set reasonably high. Once a new file has settled into emule and is downloading the 'max connections' doesn't have that much bearing on the downloads (unless it's set really low!).

Also reduce the 'max. new connections / 5secs' - setting this lower really won't make that much difference in the long run as it has most effect when you start a new download and has very little effect after emule has been downloading for a while.



Sil
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Old 18-September-2003, 18:26
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Yeah found that out buy playing about abit.
Will tweak about a ikkle bit more, to see what's best
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Old 12-February-2004, 02:20
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Question NAT/Router Configuration

"If you are behind a NAT / router these ports need to be mapped to your internal network IP address and any firewalls you have should allow these ports to be connectable from the internet."
- Silver

I am not sure how I would go about doing this. I use a 4 port router. Any help appreciated.
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Old 12-February-2004, 14:03
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Hi Arval,

Welcome to TS!

How you open those ports depends entirely on which router you have, each works in a slightly different way.

In general you are looking for a configuration setting on the router called 'port mapping' or 'server access' or some such. If you post a link to your router on the web someone may be able to give further information.

An example for one router is at <thread>:emule low id using bt voyager 2000 wireless network HELP!!

Sil

PS, I might split this thread or you can start a new thread with the the title <router make / model> emule low id port mapping problem (or some such!)
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Old 01-March-2004, 16:41
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Thanks for the help Silver but it seems to be working pretty darn well with just yellow hands around the little globe thingy so I'll just leave myself more secure by leaving my router alone. I'm regularly getting 51 or 52 kbps when set to 20kbps upload and that's enough for me

Cheers all the same, great thread
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Old 02-March-2004, 19:09
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Talking thanks

wow thanks for that it realy helped me out there is just one thing i would like to ask. i have just downloaded the new version v0.42b and could you tell me what the kad means or what it is for many thanks

mike
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Old 03-May-2004, 20:01
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Thanks to silver :-)
I tweaked emule v0.42 with a few of his researched settings and have a marked improvment of almost 60% I almost gave up on it as a slowmo, "Soz emule for the grilling I gave you" I thought onlY supernova was fast.... Wrong :-
Just plumbed in a WAG54G and I am currently port triggering, some settings I found,, Wish me luck please :-)

Hoping it all stays nice and fast, if anyone has any tips, or indeed need a few tips on it, i can tell you what i have achieved so far....

Thanks again silver.. Wow this is my 1st post here :-)
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Old 03-May-2004, 21:54
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Glad you found it useful readme

I've not run emule in a few months and haven't even checked out exactly what the kad stuff does so the guide might need a little updating!

Sil

PS, welcome to TS!
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Old 28-May-2004, 20:50
DO64
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Unhappy My transfers stops periodically. Can anyone help me?

I'm new with eMule. I've been using it for 2 weeks (practically without stop on a 7/24 basis), and I'm having a problem from the very beginning: My downloads suddenlly stops (every 10 or 15 minutes), and after a little while (may be 1 or 2 minutes), they continue. The matter is than this stop produces a loss of connection with the sources of the files I'm trying to download. I've no noticed my uploads stops (or at least not in such a manner). My PC is under a NAT/Firewall with a 2Mb connection. Can somebody help me? Could this be a configuration problem?
Thanks a lot!

DO64
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Old 28-May-2004, 21:24
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Hi DO64,

It sounds like it might be maxing out the connection somehow,. what speed upload does you ISP connection have and what limits have you set in the limits thingy?

Sil

PS, welcome to TS!
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Old 08-June-2004, 14:58
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Angry

My ISP gives me 2M/128Kb (DSL).
I tried to set upload limit to 6 and to 8,10,15,20.
Download speed is never above 10.
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  #22  
Old 08-June-2004, 15:57
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thats really your issue, the cable product you have got has quite a low upload speed (128K) so you are saturating the upload - which slows down the download side,.

really you prolly need to set the upload to 8K or thereabouts - which will cap your download (I believe) not much can be done about it really (well there are always ways round it if is really bothering you I guess)

Sil
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Old 09-June-2004, 10:16
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Thanx for your help, SIl.

It is too sad. Greater upload costs.

Please tell me does lowid big matter on this issue?



btw English is my third language
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Old 10-June-2004, 09:41
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it's better to not have lowid, as it adds load to the servers, lowid will generally mean you get slower transfer overall.

Sil
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Old 11-June-2004, 05:59
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Damm this guide rocks!

I had this really hard to download file....so I tried the "Faster queue turnround (credit system)"...and almost inmediately began to download....and the people that were downloading from me put me in the front of the downloading queue....the only problem that I saw it's that my overhead skyrocketed....from .2K to 1K...so I guess that this is really useful if you just can't seem to finish a file.....or its a very new release.....this "trick" is so clever and has so manny implications that I'm amazed... I think everyone should try it as it turns out that you don't have to download from a lot of people....just a few ....and they download from you as well..it's a cycle...

I'm afraid of trying moving the "max sources per file" and the "max connections" as my service is only 96k/96k and I don't wan't to kill the bandwith with overhead....as I had to put my upload limit on 10k to unlock my download limit....alredy on the edge here...

PS. I found this on google..it was the first result of searching for "emule tips"


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Old 01-July-2004, 23:37
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Thumbs up Great stuff!

I followed the guide and now my downloads have gone from a 2kbps average to a 50kbps average!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Old 04-July-2004, 12:20
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Default new eMule v0.43a

Anyone have any new tweaks for the newest v0.43a? There's a lot of new stuff in this version!
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Old 23-July-2004, 13:54
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Originally posted by Yellow Canary
Anyone have any new tweaks for the newest v0.43a? There's a lot of new stuff in this version!
I've had a play with emule recently, so far as I can tell they've removed some of the A4AF (asked for another file) from the right click context menu in the transfer list. Probably not a bad thing as constant fiddling with those settings will not help too much.

The other main changes (in 43b at least)

Addition of the Kad network as an option. Basically I'd turn this on (preferences > connections) then on the Kad screen at the top press 'bootstrap'. Kad is essentially a 'serverless' ed2k network, a bit like gnutella, allowing Kad may give some extra sources for files.

Security settings, (preferences > security). If you have XP or win2k then this is good, turn on "run emule as unprivileged user", especially if you normally login to your PC as an Admin level user. It makes a new user account called "eMule_Secure" that has reduced access to your PC (so if emule were to be exploited less damage can be done). You need to restart emule for the change to take effect.

Sil

PS, have updated the first post to include the above
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Old 26-July-2004, 14:46
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Default Lowid

You will also get given a Lowid if your IP address ends in a '0'

As i found out the otherday thought i hadnt opened firewall ports but they where open it was just the ip ending in a 0.
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Old 29-September-2004, 16:46
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100,000 views

Sil

PS, I have put another copy of this guide at Emule Tricks And Tips for fun - it will remain there also so please feel free to link to it

Last edited by silver; 29-September-2004 at 16:58.
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