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

linux networking ping scp

56,117

Check the firewall (iptables) on 10.0.0.109 server.

Make sure its allowing SSH connection to it.

iptables -I INPUT -p TCP -s YOUR_CLIENT_IP -j ACCEPT

56,117

GoingMyWay

A Self-Learner!

Updated on September 18, 2022

Comments

GoingMyWay over 1 year
I use SCP command on Linux Debian 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?
- GoingMyWay almost 9 years
  
  $ 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
- GoingMyWay almost 9 years
  
  The above are the ip route result, arp -an and iptables -L those two commands are not found on my Debian Linux.
- Paul almost 9 years
  
  You probably need to run sudo for the other two commands. Please can you disable either wireless or lan whilst doing this? You currently have two active network connections. Please edit your question to ad additional information.
- Paul almost 9 years
  
  Did you try disabling one of the interfaces?
- GoingMyWay almost 9 years
  
  I disabled eth0 by using the command # ifconfig eth0 inet down , and it can transfer file to my colleague. Thank you for your help ^_^
- GoingMyWay almost 9 years
  
  $ ip route default via 10.0.0.1 dev wlan0 proto static 10.0.0.0/24 dev wlan0 proto kernel scope link src 10.0.0.108 The eth0 is not on ip route list now.