telnet to port 5432 failed

<div class="Section1"><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial">Have Database server running in RHE3. postgresql.conf was changed to set tcp_ip=true. Pg_hba.conf
waschanged to allow my windows machine to access the database. Running “telnet localhost 5432” in linux shows connected
tolocalhost. From my windows end, I can telnet to linux box successfully, it gives the error of “could not open the
connectionto host on port 5432” when I run “telnet linux_ip 5432”</span></font><p class="MsoNormal"><font face="Arial"
size="2"><spanstyle="font-size:10.0pt; 
font-family:Arial">What could be the problem?</span></font><p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size:10.0pt;
font-family:Arial">Thanks.</span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial">Cynthia</span></font></div>