asked on

Build in mini firewall

whit a code like this.

how can i filter ip's?
and set a range on witch i would like to listen too.

private void Listener()
        {
            IPEndPoint from = new IPEndPoint(IPAddress.Any, this.Port);
 
            while (true)
            {
                try
                {
                    byte[] datagram = Client.Receive(ref from);
                    string result = Encoding.UTF8.GetString(datagram);
                    ReceiveString(result);
                }
                catch
                {
                }
            }
        }

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Jaime Olivares

you can now who the frame came from by using reading the .Address property:

try
{
byte[] datagram = Client.Receive(ref from);
string result = Encoding.UTF8.GetString(datagram);
IPAddress addr = from.Address;

if (some condition using the 'addr' object)
ReceiveString(result);
}

Jaime Olivares

sorry, typo, it should be:
you can know....

Natural_Demon

ASKER

i'll check it out, i'll let u hear as soon as posible.

kind regards

Natural_Demon

ASKER

and how to block a ip?

kind regard

ASKER CERTIFIED SOLUTION

Jaime Olivares

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