Thank you to kaya@sandiego for this howto!

1. Edit the '/etc/pam.d/su' file.

2. Add a new entry at the bottom of the 'su' file in '/etc/pam.d':

3.  Add this:

session    required     /lib/security/pam_limits.so

4. Save 'su' file

5. 'cd' to the directory '/etc/security'

6. Edit the file 'limits.conf' and add the entry:

*                hard    nofile          5000
*                soft    nofile          2000

7. Save 'limits.conf'

8. Modify '/usr/local/share/opennap1/config' and '/opennap2/config' accordingly:

 a. Modify 'change max_connections' to 1700
 b. Modify 'connection_hard_limit' to value equal to entry in limits.conf

9. Kill opennap processes

10. Restart processes and look for errors

11. If you see no errors restarting then you are done.