Not able to sftp to server

HI, I am trying to connect to my ftp server from vsphere 4.1 esx box. I am getting following error message

# sftp 192.29.75.160

Connecting to 192.29.75.160...

ssh: connect to host 192.29.75.160 port 22: Connection refused

Couldn't read packet: Connection reset by peer

#

I have opened all the firewall ports with cmd esxcfg-firewall --allowoutgoing

If, I try to connect the above mentioned ftp server from esx 3.5 it works fine

Thanks