openswan ipsec tunnel pinging only one side.

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http://www.linuxquestions.org – Hi all, i connected ipsec tunnel between windows azure and ubutu 13 with openswan, azure has software based vpn, both connected the thing is vm in azure can ping local subnet ip of linux box but i can't ping local subnet of azure. i guess it's working only one way. please let me know is there anything i need to do enable two way network. i also enabled ipforwarding on linux box. linux >>> to azure not pinging azure to >>> linux pinging. please help me . (HowTos)