How to check a server is alive?

Question

I want to check a server if it is alive or not without using Ping() method.

Are there any solutions to to that?

At the current the method below is ok to me.

public static bool PingToServer(string ipServer)
    {
        bool isServerLife = false;
        try
        {
            Ping ping = new Ping();
            PingReply pingReply = ping.Send(ipServer, 5000);

            if (pingReply.Status == IPStatus.Success)
            {
                isServerLife = true;
            }
        }
        catch (Exception e)
        {
            Console.Write("PingToServer: Cannot ping to server, " + e.Message);
        }
        return isServerLife;
    }

check selected answer [here](http://stackoverflow.com/questions/1043342/c-sharp-check-remote-server). — Hassan, Jul 02 '14 at 08:03
Just because you can ping it doesn't mean any of the applications are running on the box. What are you trying to achieve? — Matt Wilko, Jul 02 '14 at 08:05

Perfect28 · Accepted Answer · 2014-07-02T08:04:35.910

2

If it's an Active Directory Server as tagged in your question. You can check port 389 or 3268.

public static bool IsADSAlive(String hostName) 
{
    try {
        using (TcpClient tcpClient = new TcpClient()) 
        {
           tcpClient.Connect(hostName, 3268);
           return true; 
        } 
    }  catch (SocketException) { 

      return false ; 
    }
}

edited Jul 02 '14 at 08:04

answered Jul 02 '14 at 08:00

Perfect28

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What are they (389 and 3268) do for? – NoName Jul 02 '14 at 09:11
As a mentionned above, if you have an Active Directory Server as tagged in your question, you should check 389 or 3268. If you have a web server you can check 80.If you have a ftp server you can check 21, ... – Perfect28 Jul 02 '14 at 09:15
we should only check one of them or both? – NoName Jul 02 '14 at 09:16
one of them will be enough. – Perfect28 Jul 02 '14 at 09:17
If administrator changes to another ports, what should we do to detect them? – NoName Jul 02 '14 at 09:20
that case you'd better do a port scan or just ask him. – Perfect28 Jul 02 '14 at 09:22

How to check a server is alive?

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