Unable to access node that is showing online inside central

Community Support Linux
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1

Hello I’m unable to access a CentOS 8 node that is showing online in central,
Unable to ping or access the device I can access the device via the local network however not when trying to connect over zero tier. Firewalld and selinux has been disabled for testing purposes. Other devices I can ping across zero tier and access

below is the output of some commands any help is appreciated thanks.

ifconfig:
ztugathdjb: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 2800
inet 172.30.234.143 netmask 255.255.0.0 broadcast 172.30.255.255
inet6 fe80::3420:92ff:fe65:21b2 prefixlen 64 scopeid 0x20
ether 4e:1f:44:f6:10:4f txqueuelen 1000 (Ethernet)
RX packets 184 bytes 7728 (7.5 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 200 bytes 8944 (8.7 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

zerotier-cli status

200 info XXXXXXXXX 1.6.2 ONLINE

zerotier-cli info -j
{
“address”: “XXXXXXX”,
“clock”: 1610867042068,
“config”: {
“physical”: null,
“settings”: {
“allowTcpFallbackRelay”: true,
“portMappingEnabled”: true,
“primaryPort”: 9993,
“softwareUpdate”: “disable”,
“softwareUpdateChannel”: “release”
}
},
“online”: true,
“planetWorldId”: 149604618,
“planetWorldTimestamp”: 1591823606334,
“publicIdentity”: “XXXXXXXX”,
“tcpFallbackActive”: false,
“version”: “1.6.2”,
“versionBuild”: 0,
“versionMajor”: 1,
“versionMinor”: 6,
“versionRev”: 2
}

zerotier-cli listpeers

200 listpeers

200 listpeers 3a46f1bf30 185.180.13.82/9993;4170;24269 83 - PLANET

200 listpeers 62f865ae71 50.7.252.138/9993;1610867095276;3904 266 - PLANET

200 listpeers 778cde7190 103.195.103.66/9993;4170;39433 54 - PLANET

200 listpeers 992fcf1db7 195.181.173.159/9993;1610867095276;4049 121 - PLANET

200 listpeers d3ecf5726d 35.236.15.61/21022;4170;46511 96 1.6.2 LEAF

2

I’m able to ping the interface on the device its self.

3

Hi @arclight85
What does the output of listnetworks say?

Can you check if restarting zerotier on your other node helps?

4

let me check and try that as well.

5

it shows the following

Node2

200 listnetworks
200 listnetworks 9f77fc393eb4cca7 zulu-net a6:23:53:f2:f4:57 OK PRIVATE ztuzeur5mz 10.147.17.5/24

Node1

200 listnetworks
200 listnetworks 9f77fc393eb4cca7 zulu-net a6:17:ae:7c:23:ec OK PRIVATE ztuzeur5mz 10.147.17.126/24

I’m able to ping the IP address for each node on each machine IE: node1 can ping node1 and node2 can ping node2 but cannot ping each other or access each device

I have tried resetting both connections

6

This reassure me, you’re having the same issue as me from 2 days.

Host all available online but no ping or connection form the ZeroTier network.

What I’ve noticed, that maybe can help you, is that apparently if I install ZeroTier on a Fresh installed machine (Win 10 in my case inside a VM) at the first start ZeroTier work perfectly… if I disconnect and leave it there connected for a while then it stops, seems like either the central node or something is stopping the connection after a while of inactivity.

7

Still having the same problem as above on a new network.
It seems to be tied to running centos as windows clients are working fine.
I disabled the local firewall on the machine and still no communications.

8

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