"Bad guy filter"

[Edi]

So, we know that everything that foes through the Stargate is dematerialized, sent as energy, and materialized on the other side. (so it basically goes through some kind of computer)
We know that the gate can "chose" to send through objects and not the atmosphere/ water/ w.e.
We know that the Asgard and the Tollans can make automated systems that filter out, while teleporting/ beaming or just walking in the area, weapons and even Goa'uld them selves.

So, why the Ancients couldn't build some similar system in the Stargate to filter out the bad guys, like the Wraith, Goa'uld. etc. ? And/ or they'r weapons.
It shouldn't be harder than just uploading some new programming in the network...

[IV]

There's always the chance that the gate might have been designed to freely allow travel, and wasn't designed to 'reject' (or be manipulated to) any people and accompanying items coming through the wormhole. Having a filter would seem a little odd when SG-1 already had the metal iris, and Atlantis had the shield.

[K^2]

I'm sure that if the ancients thought of that before building the gates, they could have. Problem is, if they were to make it easy to change programming, anyone could mess with it. So once the gates are in place, there isn't a lot that you can do with the programming of the whole network. Individual gates, yeah, you might be able to tweak. Also, there are some vulnerabilities, as we see in the Avenger 2.0 episode, but they are limited.

[lord groovy]

So, why the Ancients couldn't build some similar system in the Stargate to filter out the bad guys, like the Wraith, Goa'uld. etc. ? And/ or they'r weapons.

1 - how do you explain to the gate what is a bad guy ?

Wraith are bad - Todd was fairly good
Goa'uld are bad - Tok'ra/Jaffa were good
Asgards are Good - Pegasus Asgards are bad

2 - How do you define a weapon so that it can be understandable by the gate?
same thing ( try between a naquadah generator and a naquadah bomb)

In both cases, you need someone (a sentient being...) to analyse the data and determine what is good/bad or just incapacitate any representative of a group.

Technology isn't the answer to everything. Sorry for that. Next!

[Serenity000]

As far as I know the gate network was designed the people on different planets to connect peacefully and without the need of hyperdrive technology.

[Sealurk]

So, why the Ancients couldn't build some similar system in the Stargate to filter out the bad guys, like the Wraith, Goa'uld. etc. ? And/ or they'r weapons.
It shouldn't be harder than just uploading some new programming in the network...

That would be ridiculously difficult and problematic. What happens when 'good' guys capture enemy tech (or just plain enemies) and need to take them back for study/interrogation? What about defectors, infiltrators or rebels?

Besides, defining who is good and who is bad isn't always plain and simple as Lord Groovy pointed out. If we can't do it that simply, how's a machine, even a Stargate, going to do it? Evil isn't always easy to detect, it doesn't come with it's own handy carrier particle - it's not that kind of universal force.

[Buba uognarf]

They built the SG's before encountering the Wraith and Goa'uld so they couldn't have programmed a filter.

[Edi]

Well, the Asgard sensors ware/ are pretty good ad figuring out who is the bad guy and who is not. They even figured out what did the team do at that episode where they needed to solve some intelligence and... bravery(?) tasks. (where they helped that cave-woman.)
Remember? Q:"How did it know what we did?"
A:"There must be some advanced sensors" ...
Not the exact quote, but something similar.
And it latter they (Asgard) just reprogrammed that thing in front of the Stargate on one planet to ignore teal'c...
Don't really remember witch episode/s but it was done... even the Tollans can do it! Surely the gate builders can do it!
Atleast for their own base/ city/ w.e. if not the whole network.

/Me shouting about how stupid and narrow-minded [strike-out]some[/strike-out] most people are...

[Edi]

And not all bad guys, just some particular enemies..

[mickhhh]

So, we know that everything that foes through the Stargate is dematerialized, sent as energy, and materialized on the other side. (so it basically goes through some kind of computer)
We know that the gate can "chose" to send through objects and not the atmosphere/ water/ w.e.
We know that the Asgard and the Tollans can make automated systems that filter out, while teleporting/ beaming or just walking in the area, weapons and even Goa'uld them selves.

So, why the Ancients couldn't build some similar system in the Stargate to filter out the bad guys, like the Wraith, Goa'uld. etc. ? And/ or they'r weapons.
It shouldn't be harder than just uploading some new programming in the network...

as others a said the ancients would never have did this but maybe we could benefit from some thing similar.
maybe if we make a new dhd that could be set so it let nothing though if we tell it not to and it stores it all in the buffer. then we could look at it and deside to let it though or not. this would come in handy if a SG team is coming in hot and we dont no if we should let them through or not

[stargater1990]

so far the closest thing to a "bad guy filter" weve come across is the thing that anubis used on that one stargate to make the gate hold the contents of the buffer and then forward it to another gate if a specific code is not entered.

now i think that this could be used really effectively because if you program it to also stop all inorganic matter as well it could be programmed to forward all incoming traffic thats of questionable origin to an off world base designed to recieve dangerous threats. i mean if a team is coming in hot, you just make the gate hold the contents and then forward it to the base and then they beam the friendlies into a secure area and slaughter the rest. and if its a bomb they can either beam it far far away or use a shield to absorb the explosion.

and this would have been a big help when people are contacting us because instead of being forced to keep the iris closed and killing them, you could just hold them and forward them to the base where they wont die and we wont have to take the risk of compromising the security of the SGC.

also, if you put these devices on all of our base stargates as well you could make it so that their impenetrable by gate and yet you dont have to kill the person trying to come through you just forward them to a planet and then send a team to check them out.

also, perhaps the technology could be further modified so that all organic life forms other than say the wraith are allowed through and the only way the wraith would be allowed through is if they transmit a code this way we could bring wraith through the gate but only when we want to.

[BriGuy]

The Stargates don't have a filter, as the Ancients just never got around it and did not need it. The Goa'uld were not around back in ancient times in any great numbers. And even if the Wraith used the gates a little 10,000 years ago..their massive fleets of warships were the main threat.

And the Ancients were 'good' and wanted to be 'fair' to everyone. For example not all Goa'uld are bad, there are the Tokra. Same with Jaffa, such as the problem T'elc had with Thor's Hammer.