What's considered a bad proxy port?

I was looking at ProxyGo's Charon's tutorial and he mentioned to filter out for 'junk proxy ports'. What is considered a junk proxy port? Why are they considered a junk port? Thanks.

3126
3127
3128
3129

These are mainly codeen proxies and should be avoided, but you may miss other proxies if you just block by port.

mrankin said:

3126
3127
3128
3129

These are mainly codeen proxies and should be avoided, but you may miss other proxies if you just block by port.

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there are heaps of misconfigured squid proxies on 3128/3129, not just codeen

Most 5 digit ports are trash. They're usually what I would call "teasers". They're infected machines that are left open to share with the public/advertise their service for the private ones that aren't open obv. You'll see this a lot with socks 5 proxies. Another reason for the 5 digits removal is for example 18186, you'll scan a good bit of those valid, but they're from China, and as such they're not useful in very many situations. I think Proxygo has said it before, and I'm not sure if he mentions if there, but if you're trying to port scan your best best is to really just stick to 2 or 3 of the most common ports and try and cover as much ground as possible. Instead of trying to scan 100,000 IPs on 10 or 15 ports, only use 3 ports and you can scan 300k-500k. You'll be much, much better doing that and trying to scan as many IPs as possible, especially in the beginning as you try to build up good blocks and ranges to scan.

alot of the 5 digit port proxies are a give away CN proxie delete
if you intend to use scraped proxies ive always found
8080 - 8118 - 443 - 3128 - to go best on a white list + remove all
CN proxies that come up in that list

Thanks, appreciate the information.

ThatGuy121 said:

Thanks, appreciate the information.

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np your welcome anytime

where did you scan and grab proxies from? proxygo