proftp fails for anonymous as well as PAM authentication

I am trying to connect to my home machine from work through at gftp. It
looks like the client succeed in logging in but fails in data connection


gftp client output
-------------------

Looking up myhome
Trying myhome:21
Connected to myhome:21
220 ProFTPD 1.2.4 Server (ProFTPD Default Installation) [myhome]
USER anonymous
331 Anonymous login ok, send your complete email address as your password.
PASS xxxx
230 Anonymous access granted, restrictions apply.
TYPE I
200 Type set to I.
PWD
257 "/" is current directory.
PASV
227 Entering Passive Mode (myhome,16,72).
Cannot create a data connection: Connection refused
Disconnecting from site myhome

On server from messages I get the following
---------------------------------------------
I am also explicitly allowing the access for the myoffice IP in
/etc/hosts.deny

Feb 18 15:47:54 snoopy proftpd[11843]: myhome (myoffice
[myoffice IP]) - FTP session opened.
Feb 18 15:47:56 snoopy kernel: Packet log: input REJECT eth1 PROTO=6
144.15.255.
227:21468 myhome:4168 L=60 S=0x00 I=63583 F=0x4000 T=45 SYN (#20)
Feb 18 15:47:56 snoopy proftpd[11843]: myhome (myoffice
[myoffice IP]) - FTP session closed.


Why data connection is failing?

Sundar