Are these safe ?

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chakkaradeep

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#16669 22-Oct-2007 21:28

Some of the peopl'e signature have some info on our ip address,operating system and browser...are those safe ? How can I block those ? I dont want to them to speak with my PC

Here is a sample screenshot,

Regards,
Chaks

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freitasm

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#91961 22-Oct-2007 22:06

They are not speaking to your PC. Every browser sends this information to a web server when requesting something, so the provider just have to create an image with this information received in the request header for the image.

It's just a trick and nothing bad.

chakkaradeep

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#91964 22-Oct-2007 22:11

freitasm: They are not speaking to your PC. Every browser sends this information to a web server when requesting something, so the provider just have to create an image with this information received in the request header for the image.

It's just a trick and nothing bad.

Oh...thanks

freitasm

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#91969 22-Oct-2007 22:34

Just because I have time, and the right image manipulation component on the server I've created something for you:

This is ASP (VB Script) code that creates this image:

Response.Expires = 0
Response.Buffer = True
Response.Clear
Set Image = Server.CreateObject("csImageFile.Manage")
filename = Request.ServerVariables("APPL_PHYSICAL_PATH") & "\image.gif"
Image.ReadFile filename
Image.TextOpaque = True
Image.TextSize = 14
Image.TextColor = "123456"
Image.TextFont = "Tahoma"
Image.Text 50, 50, "IP Address"
Image.TextBold = true
Image.TextSize = 14
Image.Text 120, 50, Request.ServerVariables("REMOTE_ADDR")
Response.ContentType = "image/gif"
Response.BinaryWrite Image.GIFData
response.End

See? Nothing evil!

Filterer

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#91978 22-Oct-2007 23:08

Ooops, busted!

pɐǝɥ sıɥ uo ƃuıpuɐʇs

chakkaradeep

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#91979 22-Oct-2007 23:19

freitasm:

Response.Expires = 0
Response.Buffer = True
Response.Clear
Set Image = Server.CreateObject("csImageFile.Manage")
filename = Request.ServerVariables("APPL_PHYSICAL_PATH") & "\image.gif"
Image.ReadFile filename
Image.TextOpaque = True
Image.TextSize = 14
Image.TextColor = "123456"
Image.TextFont = "Tahoma"
Image.Text 50, 50, "IP Address"
Image.TextBold = true
Image.TextSize = 14
Image.Text 120, 50, Request.ServerVariables("REMOTE_ADDR")
Response.ContentType = "image/gif"
Response.BinaryWrite Image.GIFData
response.End

See? Nothing evil!

Thanks freitasm

Filterer

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#91981 22-Oct-2007 23:26

If you get the extension LiveHTTP Headers for firefox it might shed some more light on the issues,

Everytime your browser send a request for a webpage (or image) it sends up some information, you can see this with Live HTTPHEaders

GET / HTTP/1.1
Host: www.google.co.nz
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.8) Gecko/20071008 Firefox/2.0.0.8
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive

All the sig picture does it to read in your user agent which gives which browser and OS you are running, and then looks up which ISP owns your IP range, nothing too scary ;p

To block my signiture at least, you could block www.danasoft.com which is the company that hosts the "image"

pɐǝɥ sıɥ uo ƃuıpuɐʇs

chakkaradeep

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#91987 23-Oct-2007 00:07

To block my signiture at least, you could block www.danasoft.com which is the company that hosts the "image"

Well, as I dont see any thing scary, why should I hide your signature :D

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maninimepo

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#92131 23-Oct-2007 20:52

Slightly off topic I know, but is there a way I can choose to host my avatar myself?

I've got a nice little PHP script I like to use on other forums, which loads an image at random.

It's quite a cool effect. Every time the script is called, it serves up a different image.

Wouldn't mind using it here but the avatars are stored on the geekzone servers. :-(

freitasm

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#92132 23-Oct-2007 20:54

Hmmm., sorry not at the moment - although that's an interesting idea... Stay tuned.

sbiddle

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#92136 23-Oct-2007 21:23

Filterer: Ooops, busted!

Your sig doesn't show my correct IP anyway! MF's VB post does however.

freitasm

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#92138 23-Oct-2007 21:29

I am a h4x0r running VB Script!

Filterer

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#92146 23-Oct-2007 21:58

sbiddle:
Filterer: Ooops, busted!

Your sig doesn't show my correct IP anyway! MF's VB post does however.

Thats a little weird, I have no idea, I didn't make the avatar, you just sign up to it ;p
Having said that I don't see how if MF gets the correct IP and mine doesn't, its not like your IP could have changed between the two requests

pɐǝɥ sıɥ uo ƃuıpuɐʇs

freitasm

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#92150 23-Oct-2007 22:12

They probably have some cache problems... This was working before and now it's wrong. My IP address is different than this... I am using Windows Vista and Internet Explorer - so this screenshot shows the image was completely wrong...

Shall I start a service and provide something that actually works?