Hy sorry for my bad English i am Romanian i am posting to this form because all Romanian Linux forums are dead.....
My question is if i can open ports especially port 80 without a router because mine is dead. I opened ports in firewall, i search hot to do it all over the Google but what i found was only with router. I am am not a programmer just i like to play with computers its my hobby i like to learn more stuff
PS: the problem with my routers is when i connect to the internet via the wifi signal or lan cable the wan LED is blinking and it stop and on the back the red and green led is approximative on 1 min off 1 min, It was working without problems suddenly started to do this


Thank you in advance

I think you need to explain better what do you need.
Opening a port on a host means start a process which will listen on that port. 80 means usually a webserver, so probably you need to start apache.
Opening a port on a router/firewall means that router/firewall will allow the access from outside to the port on some server behind the firewall/or on your local network.
What do you really need?

Port 80 may be blocked by your service provider?

A "rapidly blinking light" sounds like a hardware issue to me, not an "open port." It sounds to me like your router might be failing!

The term "open port" means that:

1. Some TCP/IP port can be connected-to from the outside, and ...
2. Some program on your computer is actually waiting for a connection-request on that port. (Either directly or through xinetd.)

This term is a software term. It does not specifically involve (router ...) hardware.

P.S.: The "blinking lights" on a network device can be totally misleading. I once saw "blinking lights" on a box that was stone dead.