tuhriel

Hi everyone

I'm fighting with a network issue, where my synology nas doesn't accept any connection from outside it's subnet.

So, here's my setup:

• Unifi Infrastructure with three separated subnets:

  • default: xxx.xxx.2.0/24 - no vlan - pool with all "safe" devices (notebooks, mobiles, servers etc.)
  • IoT: xxx.xxx.83.0/24 - vlan 83 - here are all the IoT devices, including nvidia shield, multiple chromecast music devices etc.)
  • guest: xxx.xxx.20.0/20 - vlan 20 - quarantined guest wlan
  • dns server are locally hosted at xxx.xxx.2.42 and 43

• my I got a new NAS and i designated my old DS214play (running DSM 7.1.1-42962 Update 6) as a Mediaserver that gets to live in the IoT net:

  • changed the ip from xxx.xxx.2.50 to xxx.xxx.83.50
  • updated the gateway and subnet
  • added the vlan tag 83 on the network port
  • updated the firewall to allow all necessary ports from and to the default network (so I can stream plex to my notebooks etc.)

• The Firewall on the NAS is not activated

Issue:

• My NAS doesn't accept any outside connections after moving it to the IoT subnet, neither from my default network nor the internet.

What I tried:

• allowed full access between LAN and IoT subnet for the NAS.
• tried it with another port -> same issue
• connected another device to this port (and setup the same firewall rules) -> this one works fine.
• checked the unifi firewall logs --> requests get sent from the nas and answers from the other device
• checked logs of other devices (DNS, NetCat etc.) --> they receive the requests outside of the subnet, and return their anser but the NAS seems to block/ignore any incoming packages.

What I didn't try:

• setting the VLAN id under "Network Interface" > "LAN" > "Enable VLAN(802.1Q)" since, as far as I understand, the Unifi VLAN implementation terminates the VLAN tag at the port of the switch (and all other devices work without specifying it locally)
• fully reset the NAS

I'm completely stuck how to solve the issue, so I have moved the NAS back to the default net, but some use cases are not working properly that way, so I'd really like to move it to the IoT subnet. Does anybody have (has?) any hints or knows of some obscure settings which need to be updated? I'd be really grateful for any pointers.

Hi everyone, I hope I'm right here with this question and you can help me with an issue that follows me since a few months now where I'm struggling with the NTP synchronization on my windows 10 PC...

The issue only happens with this one device, all other devices can sync their time with whichever ntp server I chose.

I'm even able to contact the ntp server via netcat on this exact device (Opensuse running via WSL), so it's definitely not a network issue:

nc -u -vvv time.windows.com 123
Connection to time.windows.com 123 port [udp/ntp] succeeded!

I tried all the standard solutions:

1. stop and restart the Windows Time service
2. change ntp pool
3. unregister and re-register via cmd:

net stop w32time
w32tm /unregister
w32tm /register
net start w32time
w32tm /resync

Sending resync command to local computer
The computer did not resync because no time data was available.

4. the peers seem to be listed correctly if I query them:

w32tm /query /peers
#Peers: 4

Peer: ch.pool.ntp.org,0x9
State: Active
Time Remaining: 32723.7373442s
Mode: 3 (Client)
Stratum: 0 (unspecified)
PeerPoll Interval: 0 (unspecified)
HostPoll Interval: 10 (1024s)

Peer: ch.pool.ntp.org,0x9
State: Active
Time Remaining: 32723.7373539s
Mode: 3 (Client)
Stratum: 0 (unspecified)
PeerPoll Interval: 0 (unspecified)
HostPoll Interval: 10 (1024s)

Peer: ch.pool.ntp.org,0x9
State: Active
Time Remaining: 32722.7359671s
Mode: 3 (Client)
Stratum: 0 (unspecified)
PeerPoll Interval: 0 (unspecified)
HostPoll Interval: 10 (1024s)

Peer: ch.pool.ntp.org,0x9
State: Active
Time Remaining: 32722.8440001s
Mode: 3 (Client)
Stratum: 0 (unspecified)
PeerPoll Interval: 0 (unspecified)
HostPoll Interval: 10 (1024s)

5. Group Policies are also as the should be: Link to learn.microsoft
6. Defining the servers in the registry Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\DateTime\Servers
7. Also, w32tm /stripchart can contact the server:

w32tm /stripchart /computer:ntp.metas.ch /samples:5 /dataonly
Tracking ntp.metas.ch [195.176.26.215:123].
Collecting 5 samples.
The current time is 15 Apr 2024 17:06:54.
17:06:54, +19.2982674s
17:06:56, +19.2985170s
17:06:58, +19.2983909s
17:07:00, +19.2982707s
17:07:02, +19.2982836s

In the meantime I even completely wiped the disk and reinstalled windows 10 from scratch, but no luck.

I really don't know what else to do and where to look, since the error messages from windows are also not really helpful.