What would you consider the best concise list of commonly used proxy ports? I'm primarily looking for HTTP proxies but I don't mind SOCKS as well. 80,8080 are obvious choices but I get insane amounts of false positives when doing sequential IP scans, for obvious reasons.
About once a month (or more) this question is asked and for what should be obvious reasons it makes no sense. All one needs to do to answer this question, is simply consult the proxy lists that are posted here for obvious reasons.
In hesitation to make a comment, but be that as it may, I'd be careful when doing a sequential IP scan. I assume the scan is set to avoid dangerous sites? If not, I'd surely make certain that any scan skips, know dangerous locations.