Restricting the physical size of wifi network

Hi,
I'm planning to cover the 80x80m building by the amount of 1131AG APs and WLC4402 controller. But the strong client's demand is to physically restrict any posibilities of wifi connections from the long distances (100m and more from building).
Is there a feature in Cisco wifi to drop any incoming connections in case if client is 100+m from AP? (I mean that client's power is high enough for this)
What are the regular methods of resricting the physical size of wifi networks?
Thanks.

This is exactly the case for knowing and understanding antenna types and patterns (i.e., what those goofy circle charts mean).
By using an antenna's pattern, coupled with power management, you can easily limit the radiation and external exposure of the signal.
You don't have to know every single antenna, but just be familiar with the general types, and how to interpret the charts.
Here's a pretty decent explanation on Cisco's main site:
http://www.cisco.com/en/US/prod/collateral/wireless/ps7183/ps469/prod_white_paper0900aecd806a1a3e.html
Good Luck
Scott

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How do I add an Airport Express to extend the range of my WIFI network with my iMac as a base station?

Hi people
I need help to configure a new Airport Express only to extend the range of my WIFI network.
My ethernet cable from modem is connected directly in my iMac and I am sharing the internet by WIFI inside home very fine.
Now, I would like connect my devices on my garden on backyard.
I can't move my iMac from their place and i just want add a Airport Express between the iMac and backyard to extend the range of WIFI.
But I can't to configure to that. On Airport Utility appear the Airport Express connected directly to internet globe, but don't work.
So, what can I do? What is wrong?
Thanks all and best regards.
Carlos Sgrillo, from Brazil.

The AirPort cannot do what you ask.
The Airport needs to connect to a modem, or another router......not to a computer.
The Express can only extend a wireless signal that has been provided by another Apple router.

I have a early 2008 Macbook Pro, need to up grade the hard drive so that I can add a windows environment what is the largest drive that I can put in this computer? Is the storage size the constraint or the physical size of the drive? Or a combination?

I have a early 2008 Macbook Pro, need to up grade the hard drive so that I can add a windows environment what is the largest drive that I can put in this computer? Is the storage size the constraint or the physical size of the drive? Or a combination?

The largest capacity HDD that you can install is the HGST 1.5 TB HDD:
http://eshop.macsales.com/item/HGST/0J28001/
Any 2.5" 9.5mm thick SATA HDD will fit and operate in your MBP, regardless of capacity.
Ciao.
Message was edited by: OGELTHORPE

HT4437 I bought a brand new iPad 3 and an Apple TV, both connected to the same wpa protected wifi network from home. It worked for a day, but when I woke up, the Apple TV couldn't be found anymore by neither iPad, MacBook or iPhone. Any clue? Thanks!

I bought a brand new iPad 3 and an Apple TV, both connected to the same wpa protected wifi network from home. It worked for a day, but when I woke up, the Apple TV couldn't be found anymore by either iPad, MacBook or iPhone. Anybody a solution for this?

Thanks for the swift reply, I have been looking online and a loose plug seems to be somewhat of an issue with many, I hope mine is actually a problem and not what others are experiencing. It's taken me this long to even reach out for the simple fact I HATE being a complainer but this is just horrible.
Do you have an iPad 3 as well? And is yours not experiencing any issues close to mine?
Thanks again!

How do I change the name of my wifi network

How do I change the name of my WiFi network name on Time Capsule

Open the airport utility and type in a new name in the wireless tab.
eg.

How to view the physical size of objects

Hi
Please advise how to view the physical size of objects like tables, indexes, materialize views etc.
Wishes
Jawad

To see the physical size of objects like tables, indexes, use
USER_SEGMENTS where SEGMENT_TYPE=table/index/partition etc.
But for views/packages/java/trigger, you can only see rough estimate in USER_OBJECT_SIZE

After I connect with my iPhone (3GS 5.0.1) to any Ad-hoc wireless Network then walk away out of the reach of my wifi network, my iPhone can't find any wifi Network afterwards, only by turning off the iPhone completely and turning on again.

After I connect my iPhone (3GS 5.0.1) to any Ad-hoc wireless Network then walk away out of the reach of my wifi network, my iPhone can't find any wifi Network afterwards, only by turning off the iPhone completely and turning on again.
switching off wifi and on again or going into airplane mode did't help!
This problem happens only with ad-hoc wifi networks not with normal ones.
(Ad-Hoc network was created on XP Computer)

Welcome to Apple Discussions
Sorry, but the 169.x.x.x IP address is internally generated by the iPod (and iPhone) and indicates that a network has been detected but no IP address has been issued. Your friends iPhone was not connected to your ad hoc network either - it connected to the internet through the 3G network.
You should read through the Vista help screens on ad hoc networking for some insight how this works. You should be able to get some ideas there.
In the mean time, $40 or less will buy you a very capable wireless router with four Ethernet ports and will simplify your network tremendously. Having used Windows ICS for a long time, the addition of a router and a real network simplified things so much.

How to restrict the maximum size of a java.awt.ScrollPane

Dear all,
I would like to implement a scroll pane which is resizable, but not to a size exceeding the maximum size of the java.awt.Canvas that it contains.
I've sort of managed to do this by writing a subclass of java.awt.ScrollPane which implements java.awt.event.ComponentListener and has a componentResized method that checks whether the ScrollPane's viewport width (height) exceeds the content's preferred size, and if so, resizes the pane appropriately (see code below).
It seems to me, however, that there ought to be a simpler way to achieve this.
One slightly weird thing is that when the downsizing of the pane happens, the content can once be moved to the left by sliding the horizontal scrollbar, but not by clicking on the arrows. This causes one column of gray pixels to disappear and the rightmost column of the content to appear; subsequent actions on the scrollbar does not have any further effect. Likewise, the vertical scrollbar can also be moved up once.
Also, I would like a java.awt.Frame containing such a restrictedly resizable scrollpane, such that the Frame cannot be resized by the user such that its inside is larger than the maximum size of the scrollpane. The difficulty I encountered with that is that setSize on a Frame appears to set the size of the window including the decorations provided by the window manager (fvwm2, if that matters), and I haven't been able to find anything similar to getViewportSize, which would let me find out the size of the area inside the Frame which is available for the scrollpane which the frame contains.
Thanks in advance for hints and advice.
Here's the code of the componentResized method:
public void componentResized(java.awt.event.ComponentEvent e)
    java.awt.Dimension contentSize = this.content.getPreferredSize();
    this.content.setSize(contentSize);
    java.awt.Dimension viewportSize = getViewportSize();
    System.err.println("MaxSizeScrollPane: contentSize = " + contentSize);
    System.err.println("MaxSizeScrollPane: viewportSize = " + viewportSize);
    int dx = Math.max(0, (int) (viewportSize.getWidth() - contentSize.getWidth()));
    int dy = Math.max(0, (int) (viewportSize.getHeight() - contentSize.getHeight()));
    System.err.println("MaxSizeScrollPane: dx = " + dx + ", dy = " + dy);
    if ((dx > 0) || (dy > 0))
      java.awt.Dimension currentSize = getSize();
      System.err.println("MaxSizeScrollPane: currentSize = " + currentSize);
      setSize(new java.awt.Dimension(((int) currentSize.getWidth()) - dx, ((int) currentSize.getHeight()) - dy));
    System.err.println();
}Best regards, Jan

import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
public class ScrollPaneTest
    GraphicCanvas canvas;
    CustomScrollPane scrollPane;
    private Panel getScrollPanel()
        canvas = new GraphicCanvas();
        scrollPane = new CustomScrollPane();
        scrollPane.add(canvas);
        // GridBagLayout allows scrollPane to remain at
        // its preferred size during resizing activity
        Panel panel = new Panel(new GridBagLayout());
        GridBagConstraints gbc = new GridBagConstraints();
        panel.add(scrollPane, gbc);
        return panel;
    private WindowListener closer = new WindowAdapter()
        public void windowClosing(WindowEvent e)
            System.exit(0);
    private Panel getUIPanel()
        int w = canvas.width;
        int h = canvas.height;
        int visible = 100;
        int minimum = 200;
        int maximum = 500;
        final Scrollbar
            width = new Scrollbar(Scrollbar.HORIZONTAL, w,
                                   visible, minimum, maximum),
            height = new Scrollbar(Scrollbar.HORIZONTAL, h,
                                   visible, minimum, maximum);
        AdjustmentListener l = new AdjustmentListener()
            public void adjustmentValueChanged(AdjustmentEvent e)
                Scrollbar scrollbar = (Scrollbar)e.getSource();
                int value = scrollbar.getValue();
                if(scrollbar == width)
                    canvas.setWidth(value);
                if(scrollbar == height)
                    canvas.setHeight(value);
                canvas.invalidate();
                scrollPane.validate();
        width.addAdjustmentListener(l);
        height.addAdjustmentListener(l);
        Panel panel = new Panel(new GridBagLayout());
        GridBagConstraints gbc = new GridBagConstraints();
        gbc.insets = new Insets(2,2,2,2);
        gbc.weightx = 1.0;
        addComponents(new Label("width"), width, panel, gbc);
        addComponents(new Label("height"), height, panel, gbc);
        gbc.anchor = GridBagConstraints.CENTER;
        return panel;
    private void addComponents(Component c1, Component c2, Container c,
                               GridBagConstraints gbc)
        gbc.anchor = GridBagConstraints.EAST;
        c.add(c1, gbc);
        gbc.anchor = GridBagConstraints.WEST;
        c.add(c2, gbc);
    public static void main(String[] args)
        ScrollPaneTest test = new ScrollPaneTest();
        Frame f = new Frame();
        f.addWindowListener(test.closer);
        f.add(test.getScrollPanel());
        f.add(test.getUIPanel(), "South");
        f.pack();
        f.setLocation(200,200);
        f.setVisible(true);
        f.addComponentListener(new FrameSizer(f));
class GraphicCanvas extends Canvas
    int width, height;
    public GraphicCanvas()
        width = 300;
        height = 300;
    public void paint(Graphics g)
        super.paint(g);
        Graphics2D g2 = (Graphics2D)g;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                            RenderingHints.VALUE_ANTIALIAS_ON);
        int dia = Math.min(width, height)*7/8;
        g2.setPaint(Color.blue);
        g2.draw(new Rectangle2D.Double(width/16, height/16, width*7/8, height*7/8));
        g2.setPaint(Color.green.darker());
        g2.draw(new Ellipse2D.Double(width/2 - dia/2, height/2 - dia/2, dia-1, dia-1));
        g2.setPaint(Color.red);
        g2.draw(new Line2D.Double(width/16, height*15/16-1, width*15/16-1, height/16));
    public Dimension getPreferredSize()
        return new Dimension(width, height);
    public Dimension getMaximumSize()
        return getPreferredSize();
    public void setWidth(int w)
        width = w;
        repaint();
    public void setHeight(int h)
        height = h;
        repaint();
class CustomScrollPane extends ScrollPane
    Dimension minimumSize;
    public Dimension getPreferredSize()
        Component child = getComponent(0);
        if(child != null)
            Dimension d = child.getPreferredSize();
            if(minimumSize == null)
                minimumSize = (Dimension)d.clone();
            Insets insets = getInsets();
            d.width += insets.left + insets.right;
            d.height += insets.top + insets.bottom;
            return d;
        return null;
    public Dimension getMinimumSize()
        return minimumSize;
    public Dimension getMaximumSize()
        Component child = getComponent(0);
        if(child != null)
            return child.getMaximumSize();
        return null;
class FrameSizer extends ComponentAdapter
    Frame f;
    public FrameSizer(Frame f)
        this.f = f;
    public void componentResized(ComponentEvent e)
        Dimension needed = getSizeForViewport();
        Dimension size = f.getSize();
        if(size.width > needed.width || size.height > needed.height)
            f.setSize(needed);
            f.pack();
     * returns the minimum required frame size that will allow
     * the scrollPane to be displayed at its preferred size
    private Dimension getSizeForViewport()
        ScrollPane scrollPane = getScrollPane(f);
        Insets insets = f.getInsets();
        int w = scrollPane.getWidth() + insets.left + insets.right;
        int h = getHeightOfChildren() + insets.top + insets.bottom;
        return new Dimension(w, h);
    private ScrollPane getScrollPane(Container cont)
        Component[] c = cont.getComponents();
        for(int j = 0; j < c.length; j++)
            if(c[j] instanceof ScrollPane)
                return (ScrollPane)c[j];
            if(((Container)c[j]).getComponentCount() > 0)
                return getScrollPane((Container)c[j]);
        return null;
    private int getHeightOfChildren()
        Component[] c = f.getComponents();
        int extraHeight = 0;
        for(int j = 0; j < c.length; j++)
            int height;
            if(((Container)c[j]).getComponent(0) instanceof ScrollPane)
                height = ((Container)c[j]).getComponent(0).getHeight();
            else
                height = c[j].getHeight();
            extraHeight += height;
        return extraHeight;
}

Why do i have to keep typing in the password to my wifi network every time i get home

on my phone i have to connect to the wifi network everytime i get home

Try resetting your router, unplug it wait for 1 - 2 minutes and plug it back in. Wait a few minutes for it to connect to your provider and download the latest IP addresses etc.
Go into your phone's wifi settings and forget your wifi network. Reconnect to it so that you get the latest IP addresses in your phone. Go into the settings on your phone for your network (Tap the blue arrow to open it up) Set the proxy setting to Automatic not off or manual.
Apple has done something wonky to wifi in iOS 6.0 and 6.0.1. Hopefully they will have it fixed in 6.1 when it comes out soon.
I had a similar problem and this process worked for me. Now when I walk into my house my iPhone and iPad both connect to my home wifi network with no problems.
Hope it works for you.

Any way to use the iPhone on a WiFi network that requires me to..

1. Enter both username and password
2. Download a specific digital certificate before connecting
Can the iPhone do this? All the WiFi networks on colleges and universities here in Norway use the same login and password with a specific digital certificate.

OK, so your old iTunes library was on your PC and now the library is on your Mac? Do I have that right? Your iPhone and iPad were auto syncing to the PC and now you connect them to your Mac and it wants to clear out the media?
This is important, do you have in your iTunes library on your new Mac, the media you want now? Or are you trying to move your media by copying what is on the iPhone/iPad to your iTunes?

My printer keeps losing the connection to my wifi network

I have tried deleting and adding again. Sometimes it works but then it goes down again. I have tried two different printers. I recently changed our wifi to password protected, but I have set it up on the printers and they recognize and connect. It is my computer that cannot find the printer.

Anything is possible but I don't know how I would know that. We have a wirless network that serves my imac, a pc desktop, a laptop, and various mobile devices, as well as the printer. It just seemed to stop working on the network. I downloaded all updates. I am going to remove the wireless printer form the mac for now so that the others can use it. I will hook up a usb printer to the mac. Though that seems so ridiculous. I have tried everything else I can think of.
Is it possible that my modem or router are causing the problem? I just commuication error every time even though the signals and network seem to be performing just fine.

Identifying the cause of excess wifi network traffic? Icloud?

We are now in NZ, tight data caps for both wifi and 3G. We are 99% on wifi service covering our marina in Whangarei.
I quickly discovered that we are chewing up 200 MB daily just using RSS email twitter. I downloaded Network Usage Monitor to track all data going thru our Ubiquiti wifi router via SNMP. Most traffic volume shows as UPLOAD!!
I can't spot specific apps as culprits on either macs or iPads. But I did see a big drop over night when I disconnected wifi on both macs.
Could this be icloud related? Other ideas?
Are there Better tools to identify the exact sources of the traffic?
Any guidance much appreciated!

Not for me, iCloud works perfectly on my machines (FYI, iCloud doesn't sync, you are subscribed to a web (Dav) service that supplies your devices with data,
Interesting - haven't investigate what is behind the curtain. What we observe is e.g.
1. Safari bookmarks are in sync on 3 of 4 devices, but one (an iPad at the moment) get's stuck in the past and never updates until you kill of the sync on that device, then reconnect and tell it to get everything from the cloud.
2. Similarly 1 or 2 of the devices will stop syncing contacts (usually, sometimes calendar). If it is a Mac that has dropped out AND I can figure out what new data the Mac is keeping to itself, I open that iCloud/function on the web interface, then drag and drop items from the Mac onto the web. Once the elements are registered in the cloud they always propogate to the devices.
Sadly there is no way to even troubleshoot bookmark sync failures because you can't see what icloud thinks the bookmarks state is. At least that's the way it looks from here.
the devices themselves do not sync)
Well, the devices accept changes (whether online or not, often we are at sea and of course offline). The sync operation that happens on reconnection sure looks like the classic sync problem to me.

Identifying the cause of excess wifi network traffic? Is it Icloud?

We are now in NZ, tight data caps for both wifi and 3G. We are 99% on wifi service covering our marina in Whangarei.
I quickly discovered that we are chewing up 200 MB daily just using RSS email twitter. I downloaded Network Usage Monitor to track all data going thru our Ubiquiti wifi router via SNMP. Most traffic volume shows as UPLOAD!!
I can't spot specific apps as culprits on either macs or iPads. But I did see a big drop over night when I disconnected wifi on both macs.
Could this be icloud related? Other ideas?
Are there Better tools to identify the exact sources of the traffic?
Any guidance much appreciated!

Not for me, iCloud works perfectly on my machines (FYI, iCloud doesn't sync, you are subscribed to a web (Dav) service that supplies your devices with data,
Interesting - haven't investigate what is behind the curtain. What we observe is e.g.
1. Safari bookmarks are in sync on 3 of 4 devices, but one (an iPad at the moment) get's stuck in the past and never updates until you kill of the sync on that device, then reconnect and tell it to get everything from the cloud.
2. Similarly 1 or 2 of the devices will stop syncing contacts (usually, sometimes calendar). If it is a Mac that has dropped out AND I can figure out what new data the Mac is keeping to itself, I open that iCloud/function on the web interface, then drag and drop items from the Mac onto the web. Once the elements are registered in the cloud they always propogate to the devices.
Sadly there is no way to even troubleshoot bookmark sync failures because you can't see what icloud thinks the bookmarks state is. At least that's the way it looks from here.
the devices themselves do not sync)
Well, the devices accept changes (whether online or not, often we are at sea and of course offline). The sync operation that happens on reconnection sure looks like the classic sync problem to me.

TS1398 Niether my iPhone 4s or my new iPad will connect to the internet on any wifi network.

I have restored them both to factory settings and the problem persists, any ideas?

Look at iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
Additional things to try.
Try this first. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
Another thing to try - Go into your router security settings and change from WEP to WPA with AES.
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
If none of the above suggestions work, look at this link.
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

Can airport extreme extend the signal of my wifi network?

or this can only be done with airport expresses??
my house has real thick walls

Tesserax,
I have the 5th gen Time capsule, 1st gen airport extreme and airport express.
Up to now with lots of difficulties, I managed to setup Time capsule in a bridge mode.
(The only way was to have initial setup of TC without WAN cable connetcted)
Afterwards I extened my network with the airport express, but having problems with the extreme.
Setting up to extend the network from TC, after rebooting the extreme is not getting the right IP address from TC and it is not able to extend the network.
Any ideas?

Restricting the physical size of wifi network

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