No its not port forwarding its the easiest way to show your server in the internet list and if you want port forwarding here is it.
1. Open CMD
2. Type "Ipconfig /all" (Do not include " when typing)
3. Look for default gateway. Remember that number, this is how you login into your router.
4. Type that number into your browser
5. You should now been presented a login screen. Login into your router
6. Go to http://portforward.com/ and find your router and follow the directions. They should have most of the routers.
7. Once you are done, Check at http://www.canyouseeme.org .
If the port is open, then you don't have a modem problem(meaning you have a cable modem). If it is still closed, then you do not have a cable modem. Please continue to the modem user section

So now i got the method to fix it By the way i got i a year ago but now posting if someone having this problem look at the pics its now for win 7 you have to do same with windows xp
1. Open Firewall And click as it shows in picture and follow the pics





And At Last Browse your server and click add and then ok



Now open your server and see it will in the list
Note : This is only for those who use router not for others because they dont need to port forward

i downloaded it and running it but pickup system not work /c addprop not working it says property added but its not showing i restarted server then also not showing pickup i can only edit prop pickup to any place like bank that come with gups1.6a when downloaded i cant make new.