Wikipedia:Open proxies noticeboard/Guide to checking open proxies: Difference between revisions

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Port scans: indeed
Franamax (talk | contribs)
How to confirm open proxies: this is how it will be displayed, no need for MOSNUM here
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# Identify the access point. You are hopefully going to use it yourself. Google the IP. Do rDNS and WHOIS lookups. Be creative if you have to, like look at neighbouring IP address. While you're there check if it looks dynamic. The first question to ask is whether its a web proxy or an HTTP proxy.
## Does it look like a web server? Keywords to look for in search results are PHP-proxy, CGI-proxy, Glype, and NPH, as well as ___domain names. Do the rDNS and WHOIS suggest it's a dedicated server or hosting range? Open the IP address in your browser. Is there a holding page, or even a web proxy there? Find which sites are hosted on it using rDNS and Google. Nmap will almost always say that port 80 is open on webservers, but this does not necessarily mean there is an open proxy there.
## Or does it look like an HTTP proxy? HTTP proxy IPs are always associated with a port number. The most usual ones are 80, 1080, 3128, 8000, 8080, 8888, but it could be any number up to 65,53565535. These ports are usually displayed in search results following the IP address and a colon, for example 111.282.3.1:3128. They are sometimes referred to as Transparent, Elite, or SOCKS. Use the IP address with colon and port number in you browser's address bar. If the port is open there will usually be some response, but nothing very interesting. If an Nmap scan is used the ports will say if they are open, but this does not necessarily mean there is an open proxy.
## Or is it another type of anonymiser? They are beyond this article's scope, but the same principles apply. For examples see [[:Category:Anonymity networks]].
# Connect to the proxy. If it's a web proxy go to its page in a browser. If it's an HTTP proxy change the network settings in your browser options.