I can't connect via ssh. Does not respond to pings

Troubleshooting
1

Board: orange pi 5b
Same problem as Pi comes up on IP scan but wont let me SSH in. I have tried connecting to the board via uart and everything works fine. There is a network output and can fully work, but when I connect to the router via cable I can see its address in the network but it does not respond to anything. When using arp-scan -l it says: “Unknown: localy administrated”. I’m ready to try and send you everything you need.

2

can you boot your SBC, connected to your local network. Login via uart and check following

ip a; ip r
3 
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether  brd ff:ff:ff:ff:ff:ff
    altname end1
    inet 192.168.0.105/24 brd 192.168.0.255 scope global dynamic eth0
       valid_lft 6732sec preferred_lft 6732sec
    inet6 fe80::e0cb:c6ff:feee:625/64 scope link
       valid_lft forever preferred_lft forever
4

and you are not able to reach your system on IP address 192.168.0.105?

5

yes

6

but from DietPi device, you can ping the router on 192.168.0.1?

7

I’ll check it out soon.

8

Yes, it can

9

By the way, I checked the ping on my laptop and it’s already silent.

10

can you ping your laptop from DietPi device?

11

No. 100% packet loss.

12

means you can ping the router but not the laptop located within same local network?

13

It sounds weird, but yeah.

14

Maybe it’s because my laptop is connected to wifi instead of cable?

15

This should not matter. Are you able ping any other device in your local network from DietPi?

16

Doesn’t work with one other device on my network but with others including the router everything is fine

Screenshot_20240225_215928
Screenshot_20240225_215928874×521 75.6 KB

17

Are there any similarities between the devices where it does not work? Are they all WLAN devices?

Btw: There is no reason to take screenshots. You should be able to copy all information directly from the SSH/Terminal window and paste it here. :wink:

18

Well everything in my house works via wifi except this board

19

The SBC also works. Otherwise it would not have access to the router and the internet. It seems that something in your network is blocking access from certain devices to the SBC. Since not all devices are affected (some are working) we need to find the commonality of the devices that are not working. Possibly a WLAN access point or switch.

20

Ok I’ll try to find a solution to the problem tomorrow.