virtualbox端口转发

端口转发：
setting->network->
adapter:attached to NAT.
port forwarding rules->
name    protocol     host ip     host port   guest ip   guest port
rule1     tcp       127.0.0.1    20022       10.0.2.15      22
rule1     tcp      10.36.1.193   20022       10.0.2.15      22


iptables -I INPUT -p tcp -s 10.36.0.1/24 --dport 20022 -j ACCEPT
iptables -I INPUT -p tcp -s 10.36.1.0/24 --dport 20022 -j ACCEPT
iptables-save
iptables-save > /etc/sysconfig/iptables
ssh op@127.0.0.1 -p 20022