SBG8300

I am unable to change the fourth octet of my SBG8300 modem/router.   Also, how do I disable DHCP on it? 

I can’t change my modem password by going to website 192.168.0.1 as shown in the manual because the page says page not secure, unsafe, go back.  I can’t change my password on the iphone app because there is no option for account management.  I called the number in the manual for Arris SBC8300 and the rep I was talking to directed me to the page which was red flagged as NOT SECURE.  We got disconnected and when she called me back my iphone Malwarebytes labelled her number as KNOWN SCAMMER.  This is the worst customer service I ever experienced. I have not been able to get any help with changing my modem password.  

i need to extend wifi coverage at home.  budget is limited.  i have an arris surfboard sbg3800 that is my cable modem/wifi router.  hoping i can buy one of the wifi6 mesh units.  i am unable to run any cat6 to other parts of the home so hoping i can extend via just using the mesh units

My modem disconnects from the internet several times during the day. Our provider is Spectrum. They have stopped by several times and even replaced the cable from the pole to my box. My downstream and upstream QAM values are shown in the photo. I connected to the box using 192.168.0.1 when the internet was out and under Troubleshooting | Diagnostic Tools under Test Connectivity the status showed “Inactive”. I am not sure what that means. Once I reboot the router, I have connectivity for several hours and then it goes down again. On average, it goes down at least 3 times daily. Also, I tried to check the logs. And there are none…   

I’ve setup a port forwarding rule for 7342 to be forwarded to an ssh server process I have running on port 7342 on my desktop host on 192.168.0.211.  I can ssh to localhost on that desktop, but not my public IP.   System Logs show the rule being set to Inactive as soon as I set it.   

New Hampshire Spectrum just updated there network dropping DOCSIS 3.0 support.  Once they did this my SBG-8300 stopped having internet access. The WIFI works just no internet. I called spectrum and they dispatched a technician to check the connection to the Arris SBG-8300 which says on the box the modem supports DOCSIS 3.1 and is on the spectrum support site as a supported Modem.  Tested the connection for signal which passed.  He then tested the modem and told me the modem did not support DOCSIS 3.1 and is no longer compatible with Spectrum. He has had several customers with this modem that has suddenly stopped working post update. I called Arris, I needed AI to find the support number for Arris, not something readily shared. The support rep told me they were not going to support the modem.  If this was a damaged modem I would not have an issue, but this a built in incompatibility issue. Bottom line false advertising.  If anybody else is having this issue I would like to here if yo

Some reason when i enter my model SN it indicates “The Serial Number and Model Number that you entered do not match”

I am not able to sign into my routers GUI (192.168.0.1) . I login with the correct credentials and it gives me an error of "you must sign in first". Then when I try to log back in, it says someone is already logged in. Please assist! Thank you,W. Bower

I have an SBG8300 and it has been working well for almost 3 years now. This morning I canceled my TV service with Comcast and suddenly I had internet problems. Pretty strange, but I have no proof of anything.My problem is I can access some web sites, but cannot access many more. I know it isn't a web site problem because I can get to the same sites on my phone.For example, I can get to the arris web site, but not the support site (arris.my.salesforce-sites.com), from my PC. It is truly odd.Multiple reboots of the modem, by me and comcast, have not helped. They are sending out a tech tomorrow.At this point, I am trying to get into my modem to check things out, but it won't even answer a ping, much less connect a web browser to the IP address.Has anyone run into this before? If so, what did you do about it? Thanks,Chris

ISP did update last night. Modem green light blinks slow than fast then turns blue. How to fix?

I lose the 2.4 GHz only runs on two items 5 GHz runs on all other TV laptop. No problems have to reset modem. At least once every three days any help modem is only a year old

Howdy,      I use FileZilla for work and I work remotely. My company and internet provider cannot help me. Any ideas what could be blocking access? I’m using the Surfboard SBG8300.     All FileZilla says is Connecting to < SERVER NAME >, then < Connection timed out after 20 seconds of inactivity > followed by < Could not connect to server >     However, if I change my wifi to my iPhone Personal Hotspot, it connects very fast so I know my credentials are correct.      I hope you can help, I’ve been struggling with this (off and on) for over a year.Later

What android app do I need for the SBG8300?

I have noticed a trend with surfboard modem router internet output ports failure. This is my 2nd modem over last 3-4 years. I had same issues with previous modem . I purchased SBG8300 last year. It has 4 internet output ports. Initially first output port failed. Now all 4 ports failed. I called customer service but call doesn’t go through. I am very disappointed.   

The warrantee on my SBG8300 expired in October, and in November, so did the unit itself (both leds solid blue instantly on power up, no appearent boot sequence, no WiFi signal, no change after pressing reset button). Is it worthwhile to try to get this unit repaired?

Is it common problem with surfboard modem with ethernet ports? I have purchased SBG8300 in 2024 and put in service in May-2026. Initially 2 ethernet ports quit working and I switched my ethernet to a working port. Last week remaining 2 ports quit working. Wi-Fi is working as normal. I have my internet service with Xfinity. I am thinking to call Xfinity to ship their own modem to get rid of SBG8300. I have lost a quite a bit of money on SGB8300. Very disappointed.   

I previously used the web to login in to my SBG8300 Device Manager, but receive an error number 0000-1900 that my Chrome browser version is out of date every time I log in, yet the version on the error message is an old one.  I also receive the same error message if I log into the Device Manager using the Edge browser. I downloaded the new Surfboard Central app, but when I click “Network”, the page goes through the endless refresh cycle, circling and circling and circling…..How is this resolved so I can manage my modem/router gateway on the app?

  Please help me with my ISSUES getting into modem softwareI have an Arris SGB8300 and use microsoft edge browser.I changed my admin password to the router/modem.I logged in successfully to 192.168.0.1→ I was warned my Edge Browser was unsecure→ I was to use 70.0.3538.110 (later tried and got …  (similar message as one shown)I then attempted to forward a port (found where - but had extra fields to fill in)I logged outWhen I wanted to log back to router … I got the HMMM … Can’t reach this page TAUNT)I think it is my machine blocking … but IDK..

All of the devices on my sbg8300 network are showing up on the arris web interface but only 1 device is showing up on surfboard central app on my iphone 13 pro. I tried uninstalling the app, rebooting the sbg8300, and then reinstalling the app. I also tried the factory reset of the sbg8300.

Hello, we have a SBG8300.I got a new phone and the surfboard central app has me starting over with set up, but it claims it doesn't support my model and directs me to the other surfboard app. The other surfboard apps needs a log in, and I can only get that log in info from the central app that I'm forced to restart set up on. Unsure how to proceed. We can still use our Wi-Fi, but I have no way to get in there to change or update anything

In my area, Spectrum just upgrade their cable to “symmetrical” (sometimes called “full duplex”) signaling.  Even though they list the SBG8300 as a supported product, they basically said “tough”. Is there a firmware upgrade available that will make the the SBG8300 work on a symmetrical network ?

Password reset 

I'm trying to port forward to set up a zomboid server with my friends but every time i add the ports i get an “Operation Failed” error. I have the correct UDP ports and all just when activated i get that error every time and I’m not sure what i could do to fix this. Any help would be greatly appreciated.

So. Got my SBG8300. Need to port forward on it.This page https://arris.my.salesforce-sites.com/consumers/kA5Qi0000003RuiKAE says you use the web portal. Great, it needs a password I don’t have. Now this page: https://arris.my.salesforce-sites.com/consumers/articles/knowledge/SBG8300-Web-Manager-First-Time-Login says there was a redirect page. Great, that never happened. Now this topic right here:  says it’s the same as the app. Except the app doesn’t have a password. I tap logout, I tap login, I’m logged in. No password.So

I keep getting an error that the model and SN do not match