However, if you see there is only a CSGO Combinations before a Gateway, you will know there could be a chance of a cannon rush, so you should start scouting around your own base to try spot for the probe or pylon.If the opponent's pylon is already up near your base and a photon cannon is on the way, get a forge immediately.
You want to make sure the probe does not get a cannon near your workers so you will need to go face to face with your cannons to stop it.Timing is very important here so you should try to build cannons faster than your opponent to stop the probe from warping in more cannons.If your cannon is about 2 to 3 secs slower to completion before your enemy's cannon is up, pull out a couple of your probes to deal extra damage to the near finishing enemy cannon so your cannon can just about blast it off in time when it is completed.
Form a line of cannons to hold your guard.Try not to overbuild on your cannons.You just need to set a boundary for yourself to prevent the enemy probe to sneak any closer into your base and cause anymore harassment.If your enemy intends to build more cannons within your cannon range, it will just blast it off.Now you should start focusing on getting your gateway CS GO Skins.