Blocking an ip under linux

Posted on November 28, 2012July 28, 2015 by coder

# iptables -A INPUT -s IP-ADDRESS -j DROP

# iptables -A INPUT -s 65.55.44.100 -j DROP

# iptables -A INPUT -s 65.55.44.100 -p tcp --destination-port 25 -j DROP

# iptables -A INPUT -s IP-ADDRESS -j DROP

# iptables -A INPUT -s 65.55.44.100 -j DROP

# iptables -A INPUT -s 65.55.44.100 -p tcp --destination-port 25 -j DROP

CentOS / RHEL / Fedora Block An IP And Save It To Config File

# iptables -A INPUT -s 65.55.44.100 -j DROP
# service iptables save

1 2	# iptables -A INPUT -s 65.55.44.100 -j DROP # service iptables save

How Do I Unblock An IP Address?

# iptables -D INPUT -s xx.xxx.xx.xx -j DROP
# iptables -D INPUT -s 65.55.44.100 -j DROP
# service iptables save

# iptables -D INPUT -s xx.xxx.xx.xx -j DROP

# iptables -D INPUT -s 65.55.44.100 -j DROP

# service iptables save

Download – KEPServerEX OPC Communications Server

Posted on November 28, 2012June 4, 2015 by coder

Download – KEPServerEX OPC Communications Server

Communications for Automation

KEPServerEX is a flexible and scalable solution for connecting, managing, monitoring, and controlling diverse automation devices and software applications. Communications is managed through a robust platform that supports an array of open standards such as OPC, propriety communication protocols, APIs, and various automation systems’ interfaces. KEPServerEX enables improved operations and decision making throughout all levels of an organization.

from : www.kepware.com

https://my.kepware.com/download/product/opc-foundation-kepserverex-download/1354705150/KTdlxihKP5ZVlaXVXV3GXpjVYZU=

C# opc-client .net api basic example

Posted on November 28, 2012June 4, 2015 by coder

1. Need .DLL and files !! find DLLs online

Search in google for DLL files

items[0] = new Opc.Da.Item();
items[0].ItemName = "kutay zorlu";

1 2	items[0] = new Opc.Da.Item(); items[0].ItemName = "kutay zorlu";

2. Dll Usings

using Opc.Da;
using Server=Opc.Da.Server;
using Factory=OpcCom.Factory;

string urlstring = string.Format("opcda://{0}/{1}/{{{2}}}", _hostName, _serverName, serverid);
Server s = new Server(new Factory(), new URL(urlstring));
ItemIdentifier itemId = null;
BrowsePosition position;
BrowseFilters filters = new BrowseFilters() {BrowseFilter = browseFilter.item};
BrowseElement[] elements = s.Browse(itemId, filters, out position);

using Opc.Da;

using Server=Opc.Da.Server;

using Factory=OpcCom.Factory;

string urlstring = string.Format("opcda://{0}/{1}/{{{2}}}", _hostName, _serverName, serverid);

Server s = new Server(new Factory(), new URL(urlstring));

ItemIdentifier itemId = null;

BrowsePosition position;

BrowseFilters filters = new BrowseFilters() {BrowseFilter = browseFilter.item};

BrowseElement[] elements = s.Browse(itemId, filters, out position);

VB EXamples

Public Function Browse(ByRef node As TreeNode, Optional id As Opc.ItemIdentifier = Nothing) As Integer
Try this to for solution

Dim clone As Opc.Da.Server = your_connected_server
Dim filters As New Opc.Da.BrowseFilters
filters.BrowseFilter = Opc.Da.browseFilter.all
Dim pos As Opc.Da.BrowsePosition = Nothing
Dim elements() As Opc.Da.BrowseElement = clone.Browse(id, filters, pos)
If (elements IsNot Nothing) Then
For Each element As Opc.Da.BrowseElement In elements
Console.WriteLine(element.ItemName)
AddBrowseElement(node, element)
If (element.HasChildren = True) Then
id = New Opc.ItemIdentifier(element.ItemPath, element.ItemName)
Browse(node.Nodes.Item(node.Nodes.Count - 1), id)
End If
Next
End If
Return 0
Catch ex As Exception
RaiseEvent OnException(GetCurrentMethod, ex)
Return -1
End Try
End Function

Private Sub AddBrowseElement(ByRef parent As TreeNode, element As Opc.Da.BrowseElement)
Dim node As TreeNode = New TreeNode(element.Name)
node.Text = element.Name
node.Tag = element

' add properties
If (element.Properties IsNot Nothing) Then
For Each [property] As Opc.Da.ItemProperty In element.Properties
AddItemProperty(node, [property])
Next
End If
' add to parent.
parent.Nodes.Add(node)
End Sub

Dim clone As Opc.Da.Server = your_connected_server

Dim filters As New Opc.Da.BrowseFilters

filters.BrowseFilter = Opc.Da.browseFilter.all

Dim pos As Opc.Da.BrowsePosition = Nothing

Dim elements() As Opc.Da.BrowseElement = clone.Browse(id, filters, pos)

If (elements IsNot Nothing) Then

For Each element As Opc.Da.BrowseElement In elements

Console.WriteLine(element.ItemName)

AddBrowseElement(node, element)

If (element.HasChildren = True) Then

id = New Opc.ItemIdentifier(element.ItemPath, element.ItemName)

Browse(node.Nodes.Item(node.Nodes.Count - 1), id)

End If

Return 0

Catch ex As Exception

RaiseEvent OnException(GetCurrentMethod, ex)

Return -1

End Try

End Function

Private Sub AddBrowseElement(ByRef parent As TreeNode, element As Opc.Da.BrowseElement)

Dim node As TreeNode = New TreeNode(element.Name)

node.Text = element.Name

node.Tag = element

' add properties

If (element.Properties IsNot Nothing) Then

For Each [property] As Opc.Da.ItemProperty In element.Properties

AddItemProperty(node, [property])

End If

' add to parent.

parent.Nodes.Add(node)

End Sub

What is OPC, Video Archive, 1,2,3,4

Posted on November 28, 2012June 4, 2015 by coder

What is OPC? Part 1: OPC Overview

What is OPC? Part 2: OPC Case Study

What is OPC? Part 3: OPC Specifications

What is OPC? Part 4: OPC Compliance

Introduction to OPC for Factory Automation and Plant Process Control

OPC server and VB.net or C# Example Video with KEPServerEX

Posted on November 28, 2012June 4, 2015 by coder

pinging a server

Posted on November 28, 2012June 4, 2015 by coder

….

public bool Ping()
{
Ping p = new Ping();
try
{

PingReply reply = p.Send("www.kutayzorlu.com", 1000);
if (reply.Status == IPStatus.Success)
return true;
}
catch(Exception ex)
{
MessageBox.Show(ex.Message.ToString());
}
return false;
}

private void start_Click(object sender, EventArgs e)
{
for (; ; ) // unl[/csharp]ess
{
Console.WriteLine(Ping);

}
}

public bool Ping()

{

Ping p = new Ping();

try

{

PingReply reply = p.Send("www.kutayzorlu.com", 1000);

if (reply.Status == IPStatus.Success)

return true;

}

catch(Exception ex)

{

MessageBox.Show(ex.Message.ToString());

}

return false;

}

private void start_Click(object sender, EventArgs e)

{

for (; ; ) // unl[/csharp]ess

{

Console.WriteLine(Ping);

}

Creating a Timer, for this method

public class NetworkStateMonitor
{
private System.Threading.Timer _timer;
bool _wasConnected = false;

public NetworkStateMonitor()
{
_timer = new System.Threading.Timer(OnPing, null, TimeSpan.FromSeconds(10), TimeSpan.FromSeconds(10));
}

public bool CheckInternetConnection()
{
bool result = false;
Ping p = new Ping();
try
{
PingReply reply = p.Send("www.kutayzorlu.com", 1000);
if (reply.Status == IPStatus.Success)
return true;
catch (PingException)
{
return false;
}
}

private void OnPing(object state)
{
var newState = CheckInternetConnection();
if (!newState && _wasConnected)
ConnectionLost(this, EventArgs.Empty);
else if (newState && !_wasConnected)
Connected(this, EventArgs.Empty);

_wasConnected = newState;
}

public event EventHandler ConnectionLost = delegate{}; *******
public event EventHandler Connected = delegate{}; ******
}

public class NetworkStateMonitor

{

private System.Threading.Timer _timer;

bool _wasConnected = false;

public NetworkStateMonitor()

{

_timer = new System.Threading.Timer(OnPing, null, TimeSpan.FromSeconds(10), TimeSpan.FromSeconds(10));

}

public bool CheckInternetConnection()

{

bool result = false;

Ping p = new Ping();

try

{

PingReply reply = p.Send("www.kutayzorlu.com", 1000);

if (reply.Status == IPStatus.Success)

return true;

catch (PingException)

{

return false;

}

private void OnPing(object state)

{

var newState = CheckInternetConnection();

if (!newState && _wasConnected)

ConnectionLost(this, EventArgs.Empty);

else if (newState && !_wasConnected)

Connected(this, EventArgs.Empty);

_wasConnected = newState;

}

public event EventHandler ConnectionLost = delegate{}; *******

public event EventHandler Connected = delegate{}; ******

}

ADvosol OPC .Net Lib, And OPC products

Posted on November 28, 2012June 4, 2015 by coder

Products ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

You have to create an account after, download access for this products you will get.Advosol offers the most complete .NET
support for all major OPC standards:

	OPC Classic Components for the C# / VB.NET DeveloperOPC Classic .NET Client Components OPC DA .NET OPC HDA .NET OPC AE .NET OPC Classic .NET Server Toolkits OPC DA .NET OPC AE .NET OPC HDA .NET
	OPC .NET Express Interface For the C# / VB.NET Developer and System Builder.OPC .NET (Xi) Converters DA server converting one Xi server Xi server converting DA/HDA/AE servers DA server converting Xi servers Xi server converting DA servers Xi server converting XML DA server OPC .NET (Xi) Client Components Xi Option for OPCDA.NET PaXi (Xi, DA/HDA/AE, UA) OPC .NET (Xi) Server Toolkits XiPLUS (DA/HDA/AE)
	OPC UA OPC UA Server Toolkit OPC UA Option for OPCDA.NET PaXi Client Base (Xi, DA/HDA/AE, UA)
	OPC XML DA Web Services For the C# / VB.NET Developer and System Builder.OPC XML DA Gateways OPC DA Server-Side XML Gateway OPC DA Client-Side XML Gateway OPC XML DA Client Components XML-DA / OPC-DA OPC XML DA Server Toolkits XML-DA Server

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