[bopm] Proxy can pass thru scanner

[Alexey]

[Mar 19 19:02:56 2006] SCAN -> Negotiation failed 212.44.131.7:80 (HTTP) [default] (0 bytes read)
[Mar 19 19:02:56 2006] SCAN -> Negotiation failed 212.44.131.7:8080 (HTTP) [default] (0 bytes read)
[Mar 19 19:02:56 2006] SCAN -> Negotiation failed 212.44.131.7:6588 (HTTP) [default] (0 bytes read)
[Mar 19 19:02:56 2006] SCAN -> Negotiation failed 212.44.131.7:1080 (SOCKS4) [default] (0 bytes read)
[Mar 19 19:02:56 2006] SCAN -> Negotiation failed 212.44.131.7:1080 (SOCKS5) [default] (0 bytes read)
[Mar 19 19:02:56 2006] SCAN -> Negotiation failed 212.44.131.7:23 (ROUTER) [default] (0 bytes read)
[Mar 19 19:02:56 2006] SCAN -> Negotiation failed 212.44.131.7:23 (WINGATE) [default] (0 bytes read)
[Mar 19 19:02:56 2006] SCAN -> Negotiation failed 212.44.131.7:3128 (HTTP) [default] (1001 bytes read)
[Mar 19 19:02:59 2006] SCAN -> Negotiation failed 212.44.131.7:80 (HTTPPOST) [default] (0 bytes read)
[Mar 19 19:02:59 2006] SCAN -> Scan 212.44.131.7 [default] completed

But, this host(nevamx.sovintel.ru) HAS public open proxy on port 3128.
How i can block this kind of proxies?...

-- 
Best regards,
Alexey