We value your feedback.
Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!
Solved
Can't Ping Computers On LAN and WLAN
Posted on 2013-10-23
I have an weird problem happening on my domain LAN. I have 2 offices that are connected through a WLAN. I use VNC to connect to the satellite office over the WLAN. However, I cannot use VNC to connect to any computer in my local office over LAN. To investigate, I've tried to go into the command prompt and ping the IP addresses of the computers, however I am failing the pings. The computers I am trying to ping to are on the network, registered with DNS, can connect to internet and network drives/programs with no problems.
Windows Firewall is off. Offices run on Windows XP SP3 environment. I do not know of any GPO that can set the ping to give failed response. VNC works fine connecting into the satellite office. The ping problem spans both offices. When pinging a computer name it will also resolve into the correct IP, so it is hitting DNS with no problems.
HERE IS THE INTERESTING PART OF THE PROBLEM. I can ping all connected SERVERS on my network. Just not the workstations themselves.
Can anyone tell me a good way to investigate why without disrupting the system as it stands?
Windows Firewall is off. Offices run on Windows XP SP3 environment. I do not know of any GPO that can set the ping to give failed response. VNC works fine connecting into the satellite office. The ping problem spans both offices. When pinging a computer name it will also resolve into the correct IP, so it is hitting DNS with no problems.
HERE IS THE INTERESTING PART OF THE PROBLEM. I can ping all connected SERVERS on my network. Just not the workstations themselves.
Can anyone tell me a good way to investigate why without disrupting the system as it stands?
[X]
Welcome to Experts Exchange
Add your voice to the tech community where 5M+ people just like you are talking about what matters.
- Help others & share knowledge
- Earn cash & points
- Learn & ask questions
2
- +2
6 Comments
Active 1 day ago
"Windows Firewall is off."
Are you using anything else that might filter ICMP traffic? Will your switches drop those packets? Are the workstations on one switch, and the servers on another?
Are you using anything else that might filter ICMP traffic? Will your switches drop those packets? Are the workstations on one switch, and the servers on another?
Active today
Are the firewalls off on the workstations you are trying to ping? Need to check that as well...
Also what AV do you have? I had a client recently with same issue, windows firewall was off...didn't make a difference...
Turns out they had Norton 360 and it wasn't working properly - that had a firewall component and was the reason...
So check the AV and see if its either working...or has a firewall section that might be interfering possibly
Also what AV do you have? I had a client recently with same issue, windows firewall was off...didn't make a difference...
Turns out they had Norton 360 and it wasn't working properly - that had a firewall component and was the reason...
So check the AV and see if its either working...or has a firewall section that might be interfering possibly
are the workstations on WIFI?
Many wifi devices have an option called 'wireless seperation' which ensures that one client on WIFI cannot see the others on the same WIFI.
try plugging a workstation in by cable and see if you can then ping it.
Many wifi devices have an option called 'wireless seperation' which ensures that one client on WIFI cannot see the others on the same WIFI.
try plugging a workstation in by cable and see if you can then ping it.
So we have installed Kaspersky Endpoint Security 10 a little while ago. Apparently one of the new rules on there is to block ICMP responses. After turning that off, we were able to ping the machine. However, I still wasn't able to VNC in. Then I found another rule in there that I had to add an exception for VNC. Weird that our upgrade didn't keep our original settings, but at least it is solved.
Thank you to paulmacd and smckeown777 for your answers as both led me to find the answer to my problem!
Thank you to paulmacd and smckeown777 for your answers as both led me to find the answer to my problem!
Featured Post
With the GDPR deadline set for May 25, 2018, many organizations are ill-prepared due to uncertainty about the criteria for compliance. According to a recent WatchGuard survey, a staggering 37% of respondents don't even know if their organization needs to comply with GDPR. Do you?
Question has a verified solution.
If you are experiencing a similar issue, please ask a related question
Short answer to this question: there is no effective WiFi manager in iOS devices as seen in Windows WiFi or Macbook OSx WiFi management, but this article will try and provide some amicable solutions to better suite your needs.
Tech spooks aren't just for those who are tech savvy, it also happens to those of us running a business. Check out the top tech spooks for business owners.
Viewers will learn how to connect to a wireless network using the network security key. They will also learn how to access the IP address and DNS server for connections that must be done manually.
After setting up a router, find the network security…
Get a first impression of how PRTG looks and learn how it works. This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.
- Linux
- Windows OS
- Networking
- Paessler
- Network Management
- Network Analysis, Network Operations
Suggested Courses
Course of the Month12 days, 23 hours left to enroll
650 members asked questions and received personalized solutions in the past 7 days.
Join the community of 500,000 technology professionals and ask your questions.