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Guerlando OCs
Asked: 2020-03-09 18:25:42 +0800 CST

How to route 0.0.0.0:22 to 192.168.122.179:22?

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I want to route 0.0.0.0:22 to 192.168.122.179:22 which is a VM. This way I can access my VM through SSH by typinh the local IP of the host machine. However i get connection refused if I try to ssh from host to vm, or even (obviously) from local machine to host to vm,

root@z:/home/lz# iptables -t nat -A PREROUTING -i eth1 -d 0.0.0.0 -p tcp --dport 22 -j  DNAT --to-destination 192.168.122.179:22
root@z:/home/lz# iptables -t nat -L -n -v
Chain PREROUTING (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 DNAT       tcp  --  eth1   *       0.0.0.0/0            0.0.0.0              tcp dpt:22 to:192.168.122.179:22

Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain POSTROUTING (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         
 1161 89206 LIBVIRT_PRT  all  --  *      *       0.0.0.0/0            0.0.0.0/0           

Chain LIBVIRT_PRT (1 references)
 pkts bytes target     prot opt in     out     source               destination         
    5   340 RETURN     all  --  *      *       192.168.122.0/24     224.0.0.0/24        
    0     0 RETURN     all  --  *      *       192.168.122.0/24     255.255.255.255     
   39  2340 MASQUERADE  tcp  --  *      *       192.168.122.0/24    !192.168.122.0/24     masq ports: 1024-65535
    6   456 MASQUERADE  udp  --  *      *       192.168.122.0/24    !192.168.122.0/24     masq ports: 1024-65535
    0     0 MASQUERADE  all  --  *      *       192.168.122.0/24    !192.168.122.0/24
ssh port-forwarding tcp

0 Answers