If this does not work, pleased check if you have downloaded and installed the DarkRP files correctly and changed ‘sandbox’ to ‘darkrp’ in your server’s startup parameters. Change “sandbox” to “darkrp” – This is capital sensitive.
I won't teach you how to build all this because it's too much effort and I cba. There's no way an attack could survive an ambush like that. This is perfect: you and your friends can see exactly what the attackers are doing, and have the ability to lock them in using the front gate (the button is located behind the right wall) with access to the higher ground and all the angles. Ideally, a good base defence utilizing this strategy would look like this: (left default, centre with material, right with material on the other side) You can't shoot through them though, so you'll have to get creative.
This gives you an (admittedly slightly unfair) advantage over the opposition, but damn if it isn't useful.
However, on the other side of the door, you will be able to see straight through the door. You will notice that on one side, the door has some kind of black or white sheet covering it that prevents you from looking through it. Select one of a wild variety of materials, my reccomended one would be the 'hunter/myplastic' material (grid made of white squares) and shoot it at the door. It should be located somewhere near the very top and is called "Storefront_Template001a_Bars". First, find the door in the prop spawn menu under the tab 'Construction Props'. Death's DoorThe infamous death's door is that one door which works in a very interesting way if you place a certain material over it.