On Dec 26, 2012 6:58 AM, <jug...@lavabit.com> wrote:
>
> Hello.
>
> Some public networks don't allow to connect to port 25 or forbid
> non-http traffic. How to check what ports are filtered/blocked? I
> think it can be done with nmap, but I have never used it.
>
>
>
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try using its interface zenmap
