1. You couldn’t use a proxy to get around that, even if you wanted to, because it involves port blocking as well.
    You’ll need to tunnel your way out — that is, use an SSH (secure shell) tunnel to connect to some computer elsewhere, so you can get around the port blocking, if you want to use programs such as Skype.

  2. The first source link is an article about bypassing blocked/restricted sites.
    Putty is a free telnet/SSH client.http://www.chiark.greenend.org.uk/~sgtat
    And if you need more definitons of SSH, the second link is the google dictionary entries on SSH.
    SSH is a secure way of transferring information (including files) between computers on a network. SFTP is a secure way of transferring files which, despite the name, has little in common with FTP.

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