amazon ec2 vps connection

[Valcars]

hi everyone sorry if it is not the right section for this post but it seemed to me the most suitable for my problem ....
I wanted to ask you for some information, because I read that some people have managed to connect by hosting the server on a vps like that of google or amazon .... I don't expect who knows what but if 2 people connect, it's just right for me to do a little practice with vps .....
 However the problem is that the client from my pc does not connect to the server on the vps ... (The server starts correctly and works on the vpn but I can't understand why I can't connect from my pc).
I read that maybe you need to open the firewalls or do port forwarding but I don't know how to do it on the vps ....
if the problem is this can you kindly tell me step by step how to open the vps ports?
If this is not the problem, what could it be?
I repeat it's just to try .... being a free host I don't pretend who knows what ....
I hope I have explained myself more or less well .... xD
and sorry for my bad english ....

It should be noted that I have modified the char_conf and map_conf files

so

char_conf:

char_ip: Public IP
login_ip: Local IP

 

map_conf:

char_ip: // Local IP
map_ip: // Public IP

 

subnet_mask

subnet: 255.0.0.0:3.PublicIP:PublicIP

 

and the clientinfo

<? xml version = "1.0" encoding = "euc-kr"?>
<clientinfo>
<desc> Ragnarok Client Information </desc>
<servicetype> korea </servicetype>
<servertype> primary </servertype>
<connection>
<display> Try </display>
      <address> PublicIP </address>
      <port> 6900 </port>
      <version> 55 </version>
      <langtype> 1 </langtype>
<registrationweb> www.ragnarok.com </registrationweb>
<aid>
<admin> 2000000 </admin>
</aid>
<loading>
<image> loading00.jpg </image>
<image> loading01.jpg </image>
<image> loading02.jpg </image>
<image> loading03.jpg </image>
<image> loading04.jpg </image>
<image> loading05.jpg </image>
<image> loading06.jpg </image>
</loading>
   </connection>
</clientinfo>

 

Edited September 25, 2021 by Valcars