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

Question

I use SCP command on Linux Debian to transfer a file to my colleague via LAN. But I encounter the problem:

$ scp filename.file username@10.0.0.109:/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?

Answer 1

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

Answer 2

It can be problem if you had not added your client ip address into your /etc/hosts file . It can be done by just adding your client ip like these one,

127.0.0.1   localhost
192.168.1.32 master
192.168.56.133 slave

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

Now after that your ssh yourclientname should run