scp ssh: connect to host 10.0.0.109 port 22: No route to host lost connection

networking ip scp networkmanager

8,711

What I need to disable eth0, after that, it works fine!

8,711

GoingMyWay

Updated on September 18, 2022

Comments

GoingMyWay over 1 year
I use SCP command on Debian Linux to transfer a file to my colleague via LAN. But I encounter the problem:
```
$ scp filename.file [email protected]:/tmp
ssh: connect to host 10.0.0.109 port 22: No route to host
lost connection
```
But when I use the same command to transfer the file to a WAN machine, it works well. And when I use ping to ping WAN website, it works well, but when I ping a LAN ip address, it does not work.
```
$ ping 10.0.0.1
PING 10.0.0.1 (10.0.0.1) 56(84) bytes of data.
From 10.0.0.108 icmp_seq=1 Destination Host Unreachable
From 10.0.0.108 icmp_seq=2 Destination Host Unreachable
From 10.0.0.108 icmp_seq=3 Destination Host Unreachable
From 10.0.0.108 icmp_seq=4 Destination Host Unreachable
From 10.0.0.108 icmp_seq=5 Destination Host Unreachable
From 10.0.0.108 icmp_seq=6 Destination Host Unreachable
From 10.0.0.108 icmp_seq=7 Destination Host Unreachable
From 10.0.0.108 icmp_seq=8 Destination Host Unreachable
From 10.0.0.108 icmp_seq=9 Destination Host Unreachable
```
Routing table:
```
$ ip route 
default via 10.0.0.1 dev wlan0 proto static
10.0.0.0/24 dev eth0 proto kernel scope link src 10.0.0.108 
10.0.0.0/24 dev wlan0 proto kernel scope link src 10.0.0.108
169.254.0.0/16 dev eth0 scope link metric 1000 
```
arp -an
```
root@debian:# arp  -an
? (10.0.0.1) at c4:04:15:17:bd:66 [ether] on wlan0
```
iptables -L
```
root@debian:# iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination
```
I can explore the Internet via Firefox. It just can't connect the LAN machie.

And my ip address is static ip in my company's LAN.

The port 22 is open, and there seems nothing wrong with iptables and SSH works well too.

How can I fix it?
- neuron almost 9 years
  
  So you are saying, from that same machine where you are trying to do scp, you can do ssh [email protected] & it works?
- Арсений Черенков almost 9 years
  
  There is a difference between LAN and WAN, if your colleague host is "behind" a routeur, there are step to be done (namely forwarding port) before you can access hosts. You will be using his WAN IP of course. Can you give more details about network topology ?
- GoingMyWay almost 9 years
  
  Hi, I have update the problem in detail.
- GoingMyWay almost 9 years
  
  $ssh [email protected] ssh: connect to host 10.0.0.109 port 22: No route to host I mean, if I scp and ssh a mahine that out of the LAN where my machine in, it works well.
- dr_ almost 9 years
  
  Try to ping your colleague's machine from yours, and viceversa. Post the results.
- GoingMyWay almost 9 years
  
  Thanks, I have solved this problem. I disbled eth0 and SCP can transfer file to my colleague via LAN.