IPFW Help

[beezkneeze]

There is something very specific that I am wanting to achieve as far as slowing down internet for certain applications and stuff with IPFW, but I haven't the faintest clue how to do it.

I would really appreciate it if someone would help me out, if you are willing I'll get into further details about what I'm wanting to do exactly.

 

[Tallest Skil]

How do we know if we can even help you if you won't tell us what you're doing?

 

[beezkneeze]

Sorry, okay basically I am trying to slow down the incoming internet connection, while not slowing down the outgoing internet connection to an application.

Does that help some? Sorry for my vagueness before.

 

[angelwatt]

Check out this mini tutorial. I think you can only set it up per port number, rather than per application, but may be wrong on that.

 

[beezkneeze]

Sorry Im a complete nub. But how do you know what port certain applications are under?

 

[angelwatt]

Sorry Im a complete nub. But how do you know what port certain applications are under?

Let us know what app and we'll try to tell you. A browser for instance uses port 80, FTP uses 21, etc.

 

[beezkneeze]

world of warcraft

 

[angelwatt]

See Blizzard's support page on this topic.

 

[beezkneeze]

Well now that I know the ports are 1119 and 3724 , what do I do know? I wasn't kidding when I said I was an idiot.

 

[angelwatt]

Well now that I know the ports are 1119 and 3724 , what do I do know? I wasn't kidding when I said I was an idiot.

Editing the IPFW configuration is not for novices really as it could have some bad effects on your machine if misconfigured. I haven't even messed with it myself from the command line. The tutorials I pointed out are as specific as I can answer.

 

[beezkneeze]

Yarg.

Thanks for the help anyway man, I'll try and make sense of the tutorial. But do you know of anyone on the forums who has successfully messed with IFPW before?

 

[Jethryn Freyman]

Download WaterRoof (a GUI for IPFW) and check out the "Bandwidth Manager" tab. It has what you're looking for.

 

[beezkneeze]

OMG thanks so much, downloading now. I'll tell you how it goes.

 

[beezkneeze]

Ok, how do I set it up once I'm at this point:

 

[freiheit]

A specific example needing IPFW help

I'm tagging onto this because I have a similar question about using IPFW which is not handled by WaterRoof (as far as I was able to tell after downloading it).

My specific issue is I want to limit total incoming bandwidth to, say, 90KB/s. I want to have multiple queues within that pipe -- one for HTTP traffic (ports 80 and 443), one for email traffic (ports 25 and 110), and one catch-all for anything else, but... here's the tricky part... I want to be able to have multiple HTTP connections going at once and having equal shares of the HTTP queue. If I only have one HTTP connection going, it should get the full allotment of its queue, but if I have 3 HTTP connections going, then each should get 1/3 of that queue.

I have read the ipfw manpage and several examples online but none address this scenario. I understand that I need to use "masks" on my queue setup, but have had no success in trying. It seems every time I make a change to test it out, even if I set the total bandwidth higher, my actual throughput drops.

I am running MacOS 10.6.