Apple devices extremely sluggish with Motorola SBG6580 modem

Yeah, I've been having the same problem, called the TWC guy over and he replaced it with the same model, worked fine on his POS protecto PC, opened 5 youtube videos all fine; opened 5 youtube videos on mine and it slowed down to 56k. I knew right then it had to be the modem, how could they not test this ****? They're gonna end up losing a ton of money for house calls that won't solve the problem.

Is turning off the Firewall safe?

I live in West Chester OH and my ISP is Time Warner Cable. A month ago I upgraded to what TWC calls Wideband RR service. They installed Motorola SBG 6580 and immediately my web access speed really bogged down. TWC in Cincinnati uses the 6580 as a cable modem only - no router.

By process of elimination I ruled out Cisco wireless router, cables, ...... In our house we have 2 macbooks, an iMac and a Dell running Windows 7. I rarely see the Dell - it's usually at school with my son. So when I was finally able to test it it ran like a scalded dog. Then I found your guys thread. So I called and and chatted online twice with TWC - I won't tell you my experience - I'm guessing this is a family show. They didn't even know what a cable modem is. WOW. So they were unable to turn off the firewall on the 6580. Can one of you guys help me on this? Thanks!

Just to add another voice to the collection...I was experiencing the same problem with my ISP (Time Warner Broadband) and turning off the firewall in the modem worked like a charm. I'm now getting 50 Mbps down and 5 Mbps up with no more stalling etc of the internet. thank you!!!

Ok. Just FYI - TWC technical support is pathetic. Anyway, with the help of all those posting before me and bouncing around in Motorola's website I found: 192.168.0.1 put me into the Cable Modem setup. Unchecked firewall and bursting, saved, reopened browser and BINGO! Pat

THANK YOU SOOOO MUCH! It is SOOO nice to actually find real solutions here!!!! Firewall be ******! I unchecked all the Firewall options and now my internet connection is a real high speed connection!

THANK YOU GUYS!!!!!!!!!!!!! Everything works great now.

What other router/modem settings should/could I change to get even better results? I have changed nothing besides the name of the router, the type of password, the password itself and now I have changed the firewall preferences. Any other suggestions???

I relaize this is an old thread - and you likely have found an answer or another solution - but in case you are still looking or someone else happens across this thread - the default user name and pasword on the SBG6850 are admin and motorola - which you can then change after you log in.

As an additional note - I have had a few times where things seemd to slow down - and the router status showed only one channel in use - a reboot of the router solved that.

I am having a couple other issues that *might* be realted to the router - with FTP to a Mac OS X Lion Server for example - but may not be.

Another interesting tidbit - the firmware is not user upgradeable - not sure how to detemine what the latest firmware is or how often the cable co will update it - mine is currently - SBG6580-3.3.0.0-GA-06-022-NOSH

I was having the same problem with my SBG6580 as everyone else and I eventually found this post. I turned off the firewall and what do you know, it's fixed. But I didn't really like the idea of not having firewall so I did some testing and found that what also fixed the problem is just turning off IP Flood Detection the option right above the Firewall Protection option. This also fixed issues with my PS3. So my recommendation to all of those people having problems is that you do this first before you turn off your firewall. Good Luck to all and thanks to everyone who helped find a solution.

-James

Thanks guys, I was shopping for a new gateway unit when I stumbled across this and it fixed everything!

To any of the respondents in this thread who are using a Motorola SBG6580 with an Airport Extreme base station:

I've owned a couple of different Motorola SBG series cable modem/router/Wifi devices. I'm probably going to buy the SBG6580 soon. Lately, I left the router portion of the SBG intact, turned OFF WiFi on the SBG, and have set my Airport base station to "bridge" mode in order to use the Airport Extreme to create my wireless network. I've never had any problem with this setup but I'm wondering how the settings on the SBG need to be changed in order to use the Airport Extreme as the router. Any advice would be appreciated. Are there any speed advantages to doing this?

The reason I left the router on the SBG intact is because I've read that causes fewer problems on the Time Warner cable internet service than using an Airport unit as the router.

Hi Scott,

I found this online which I believe will help you.

http://gol10dr.com/motorola-surfboard-sb6580-playing-nice-with-a

You might have to cut n paste the link or google sb6580 with airport extreme

Thanks for the info. I've printed it to a PDF file and saved it in case I need it in the future.

As it turned out, a week or so after my previous post I did purchase this cable modem/wireless router. I disabled NAT within the cable modem and let my AE Base Station do that job as well as create my local WiFi network. I haven't had any problems. I initially set up the cable modem/router to create a network (now disabled) using the same name/password as the one that my AE Base Station does which gives me redundancy if the AE Base Station fails.

I’m having similar issues with the SBG6580 modem as described above but am not even able to access the modem through the http://192.168.0.1/ address. I have disconnected all other devices and even tried connecting solely through an Ethernet cable. Even though I can access the Internet, I’m still not able to access the modem in order to disable the firewall. The error I’m getting is that "Safari can’t open the page because the server where this page is located isn’t responding." Any advice?