How to set valid ip & internet access

hi,i’m beginner & my knowledge is a little about ppp server , radius .
in my client i have a web server & until now it’s connected by pppoe connection to get its valid ip & internet
but i dont know why my connection disconnected some times & now i want to set ip address directly in my web server to acess internet & public its ip without any connection.
help me to do plz …

some body help me plz