[Forte]

I'm attempting to get my iBook to connect to the internet with my not-so-Mac-friendly ISP with said ISP's provided/supported USB modem. I've got the modem working just fine, but I can't connect (the connection always gets refused at a certain point). I found out yesterday that they use different MTU, MRU/RWIN, and MSS settings to the defaults, which seems to correspond with the error I get in my connection log.

I know how to change the MTU ('sudo ifconfig {device} mtu 1400' in Terminal), but I'm kind of stuck when it comes to changing the MRU/RWIN and MSS.
The MRU needs to be 1400, and the MSS needs to be 1432.

Does anyone know the commands for this (or where to look for them)?

[John Strung]

You might try IPNetTunerX from http://www.sustworks.com

[Forte]

Thanks very much. I'll see how it works out. ^^

[Sod Off Sadr]

any ISP that is worth anything has ethernet modems. If they provided you a USB one, get rid of it. Demand an ethernet modem.

All your problems will be solved.

[Forte]

UK ISPs tend to only provide USB ones so as to make their support job easier with the clueless users - not to mention this ISP doesn't even officially have Mac support for it's DSL service (and I can't afford to take a gamble on buying a new modem if I won't be able to get it to connect anyway, so suggesting it doesn't really help... :/). I just know it's supposed to be possible to connect to it with the aforementioned MTU, MRU, and MSS settings, even with a USB modem. I've had my iBook for four months, and still haven't managed to get it online, it's really very frustrating. X_X;;

[John Strung]

See if you can get any help at UK Broadband FAQ or UK Broadband Forums

[Forte]

Unfortunately, I tried that some four months ago, both there and here, and I'm still having no luck.

Thankyou for the suggestion, though. ^^; I appreciate the help.

EDIT: I suppose I should mention that IPNetTunerX didn't help, and neither did a similar free app, called 'RMAC'... :/