+#ProxyCommand /usr/bin/ssh ovpn-phx2.redhat.com exec nc %h %p
+#ProxyCommand /usr/bin/ssh 209.132.183.3 exec nc %h %p
+#ProxyCommand /usr/bin/ssh host0 /usr/bin/ssh 209.132.183.3 exec nc %h %p
+###bastion:
+###ProxyCommand /usr/bin/ssh -W %h:%p 209.132.183.3
+# iptables -t nat -A OUTPUT -p tcp -d 10.10.36.184 --dport 6667 -j DNAT --to-destination 127.0.0.1:6671
+# iptables -t nat -A OUTPUT -p tcp -d 10.4.122.10 --dport 25 -j DNAT --to-destination 127.0.0.1:3025