Question No or actual partial/access to network from new device ?

[ske-home]

Hi guys and gals!

Happy summer first of all! Newly registered member on the forums but a long fan of the site and long time reader.

I am on a bit of a pickle although quite a semi-decent engineer. I have an issue with a brand new laptop that I am trying to setup on my home network. Quite basic compared to business networks but nonetheless a bit overkill for a home network.

The setup on a high level and problem is:

Internet > Firewall(NGFW) > Segmented on about 6 different distinct Subnets (e.g. for simplicity reasons lets say 192.168.1.0/24 - 192.168.10.0/24 - 192.168.20.0/24 etc.... and some VLANs that are for my VMs but that isnt the issue). Current systems that all interconnect with each other.

e.g. SETUP:

- NGFW: 192.168.1.1 (internal IP)

- PC1 - 192.168.1.100 (Main PC - sees all - including VMs and all VLANs and WiFi)
- PC2 - 192.168.1.101 (2nd PC - same as above)
- ESX- 192.168.1.2 (sees all - same as above)
- DMZ - 192.168.40/24 - (sees only some internal VMs and access only from Main PC and one laptop and one Mobile)
- WiFi - 192.168.20./24 - (all 4-5 devices see all that is allowed by NGFW and APs)
- Laptop1 on WiFi (sees all that is allowed that is allowed by NGFW)
- Laptop2 on WiFi (same as above)
- Tablet /Mobile (same as above)
- NAS Devices (NetGear/WD - access to only those specific IPs/MACs as defined)
......

All Systems are running either Win10 Pro or Win11 Home and Ubuntu/Suse/RasbPi)

PROBLEM is. New laptop that I've setup extacly as the above cannot see almost anything on the Network. For instance:
#1 I can access Main PC with RDP, but cannot see it on network nore access its network shared drived
#2 I can access both NAS devices from Web. BUT I can access only 1 of them via Network. The other is not accessible.
#3 All devices (including VMs) respond to e.g. ping that i've allowed for testing and internally.
#4 I can access also some VMs via VNC/RDP/FTP where appicable)
#5 I've even created a replica rule that is basically laptop1 for the new one.
#6 All systems are updated with all official drivers and services
#7 Nothing is recorded on any logs (have also enabled extensive logging
#8 ONLY difference is that the new Laptop is Dell, all other either customized or Lenovo/IBM/Samsung.
#9 I've also removed the Dell custom Original ISO image and created a new one from Windows and exact same results
#10 I am buffled....

Any ideas? Its seems like a random / wierd issue that i have not encountered before. All related services/network sharing are enabled. Even with network analysis tools there is nothing shown.

Any advice much appreciated!

Sorry for the long post and not exact network diagram/details.

Best Regards!

 

[Ralston18]

Make and model information for modem, router (or modem/router if combined)?

New laptop: make (Dell noted) and model?

On the new laptop:

Ensure that only one network adapter (either wired or wireless) is enabled. Not both adapters at the same time.

Run "ipconfig /all" on the new laptop. Also run "ipconfig /all" on two or three other devices that are working on the network.

Post the full results of each "ipconfig /all" for comparison purposes. Be sure to indicate which "ipconfig" result is which device.

Update your post with a basic network diagram (sketch) showing all devices: topology, IP addresses (DHCP and Static) plus subnet masks.

The diagram can be photographed or scanned and the image posted here via imgur (www.imgur.com > green "New post" icon).

Do not edit the "ipconfig /all" results other than to mask out some name or other reference that may be personally revealing.

 

[bill001g]

Since ping works it is not a basic networking issue. Your subnet masks and gateways are likely correct.

I guess it depends on how you have designed the firewall. It is extremely uncommon but does the firewall restrict data between devices on the 192.168.1.x network. You have to use a very special feature in a switch to do this.

If we ignore the more complex issue of accessing other subnets for now the problem almost has to be the PC. Pretty much your setup should not be any different that if you just plugged all those devices into a dumb switch. All I can think of is there is some garbage in the microsoft firewall on the pc. It might be related to microsoft device discovery which is done via broadcast.

Can you mount the shares if you use the ip address.

 

[bill001g]

So I reread this and my above may not apply. Is the new laptop on wifi and therefore on the 192.168.20.x subnet.

Does the laptop work if you use ethernet and it resides on the main network.

 

[cruisetung]

Make sure your Network profile is Private