Category: Linux
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Check if an email address is valid – the telnet way
You can use telnet to check if an email is valid. You can actually send emails via telnet, but we’ll stick to checking for now. Remember that this is not a string validation but a complete check with the mail server if the user is valid. For this example we will use [email protected].
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Socks proxy for non-socks applications
For several reasons you may want to use a socks proxy, but a lot of command line applications are not able to work with a socks proxy. wget for example is unable to work directly with a socks proxy. Also, configuring wget to work with a http proxy is a pain. You can’t specify the…
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SSH tunnels, an alternative to VPN
What do you do when you need a connection to the Internet and the only thing in hand is an unsecured wireless network or hotspot? Do you realize the dangers involved? Would you trust this connection and send confidential data over it? Of course VPN is the favorite method, but what if you don’t have…
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SSH tunnels, an alternative to VPN
What do you do when you need a connection to the Internet and the only thing in hand is an unsecured wireless network or hotspot? Do you realize the dangers involved? Would you trust this connection and send confidential data over it? Of course VPN is the favorite method, but what if you don’t have…