Hi everyone, I'm new here.
I am trying to access a web relay located in the LAN at work from a computer from home.

The WEB server is accessed from the LAN:
http://192.168.1.4/30000 (port80)

Can I access it from the outside if my public IP address is 88.90.88.90?

P.S. I managed to forward external port 3000 to public ip address 88.90.88.90 to lan address 192.168.1.4 on port 80. But the web server requires to access exactly like this 192.168.1.4/30000 I don't know how to do this?
Best regards

This does not make sense

http://192.168.1.4/30000 (port80)

Do you run http on port 30000 on ip 192.168.1.4, it should be

http://192.168.1.4:30000

You write it as 30000 is a folder on the web server.

Do you like to reach the server on outside in port 30000?

http://88.xx.yy.zz:30000

or port 80?

http://88.xx.yy.zz:80 -> http://88.xx.yy.zz

PS if this is your public IP 88.xx.yy.zz, you should not post it on any forum, and edit the post above and remove it.
PS2 you have posted this in the script section, better would be in Beginner Basic