postgresql - Access remote Postgres server with pgAdmin -

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The following lines are in the pg_hba.conf file 

  Type Database User CIDR-Address Host Host All All 10.0.0.68/32 Trusted Local Madbuzz Passwords Local All Postgres ident host mydb myuser 10.0. 0.68 / 32 Password Host All Postgrads 10.0.0.68/32 Trust   
 My  postgresql.conf  The following line in the file is:  
  listen_address = 'localhost, 10.0.20.10'   
  nmap -sS 10.0.20.10  Finds:  
  Port State Service 5432 / TCP Open PostgreSQL   
 I can do SSH in the Bash shell on the server, but I do not connect to pgAdmin can do. I get the following:  
 
 Could not connect to the server: There is no way to host (0x00002751 / 10065) What is running on the host host "10.0.20.10" and port 5432 Accept TCP / IP Connection?   
 I do not know what the problem is. @Adan found a solution of himself:  
 This firewall issue was:  
 
 
  
  service iptables blocking   
 connection enabled. I will write a rule for connection permission.

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