Port is open in iptables, but still it does not allow to telnet?

Solution Verified - Updated -

Issue

  • Rule has been added to iptables rules list, but still it does not allows to access application.
  • Port has been opened in iptables then why nmap is still showing the port as closed ?

Environment

  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Iptables

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