Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Network connectivity between Windows 7 pcs was down, but can connect to the net

Posted on 2014-03-11
5
Medium Priority
?
333 Views
Last Modified: 2016-11-23
Hello,
I have been in this field a long long time and I saw something today that really baffled me. I have a network of 8 pcs. Using one Windows 7 pc as a server. All of a sudden, none of the 8 pcs (all Windows 7, 64 bit Dell XPS') could NOT talk to each other or the server. But, I can remote into one of the 8 pcs and can get on the net. So it was not the cable modem or the hub. I need to verify the pc I logged into had a fixed IP address but no...the server (Windows 7 pc) had a fixed IP address and it was isolated from everything else but still had access to the internet. The AV on all is Norton Internet Security 2013/14. In my past experience, if there is an attack, Symantec's products shutdown the offending IP address...so this is what I am going on. At other places, I have Symatnec Endpoint Protection blocking attacking pcs for 10 minutes. Becuase all of a sudden, everything started working again. The pcs were already updated with Microsoft Updates...strange things happen on every second Tuesday of the month I swear. What do you think? The hubs are all new, switches are new, cable modem is new. Wiring is in perfect shape.
Thanks,
J
0
Comment
Question by:dronethought
5 Comments
 
LVL 24

Expert Comment

by:DMTechGrooup
ID: 39922439
I think you issue is the Norton FW.. if you have a good endpoint FW, imo, there isnt much need for a FW other than the default windows FW on the client.

Also it could be a netbios or DNS deal.. did you try contacting the other PC's with the IP addresses?
0
 
LVL 10

Expert Comment

by:Scott Thomson
ID: 39922561
Check when updates on the machines / server are occuring (especially AV)
because i would suggest that this is what may be the case.

Do your server/workstations update automatically..? that sounds like its in tune with MS update releases..
0
 
LVL 2

Accepted Solution

by:
dronethought earned 0 total points
ID: 39935022
Did further research. the Function Discovery Resource Publication was not turning on. Even though I set it to Automatic, Now I have it as Automatic (Delayed). Also, need Computer Browser to be on Automatic when using a Windows 7 pc as a file share. I thought it was an update but it was not.

As for the default FW in Windows 7, the built in FW has failed me on an virus that was a fake "Update your Flash Player" executable. The fake .exe file was able to go out and download the virus contents. The built in FW was on. All rules set correctly. The executable could not pass through Symantec's corporate product.
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

How does someone stay on the right and legal side of the hacking world?
Will you be ready when the clock on GDPR compliance runs out? Is GDPR even something you need to worry about? Find out more about the upcoming regulation changes and download our comprehensive GDPR checklist today !
If you're a developer or IT admin, you’re probably tasked with managing multiple websites, servers, applications, and levels of security on a daily basis. While this can be extremely time consuming, it can also be frustrating when systems aren't wor…
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…
Suggested Courses

927 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question