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Quick Tips: Flush the ARP cache in Windows 7

Here’s how to clear the Address Resolution Protocol cache and how to manage that cache with a few command switches.

The Address Resolution Protocol (ARP) cache is a crucial component of IP networking on any operating system. What ARP does is link Ethernet addressing (IP addressing) to hardware addressing (MAC addressing). Without this system, a machine could not communicate to the outside world as one addressing scheme could not communicate with the other.

The ARP Cache is a collection of ARP entries (mostly dynamic) that are created when a hostname is resolved to an IP address and then an IP address is resolved to a MAC address (so the computer can effectively communicate with the IP address).

When this happens, the PC will store that newly mapped address in the ARP cache, and it will stay there until the ARP cache entry timeout expires. This isn’t usually a problem, but sometimes a bad ARP entry can cause issues with Internet connections and Web page loading. When this occurs, one step that can be taken toward resolution is to clear the ARP cache. Yes, this means the ARP cache has to be rebuilt, which means a little more work for the PC, but that cache will rebuild fairly quickly.

Clearing the ARP cache is done completely through the command line, so stretch out those fingers and get ready to type. After we show you how to clear the ARP cache, we will show you how to manage that cache with a few command switches.

Flush the cache

Step 1: Open the command prompt

Click Start and then type “cmd” (no quotes) in the search dialog box, but don’t hit Enter yet. Right-click the cmd.exe icon and select Run as Administrator (Figure A). After answering the UAC, the terminal window will open offering up the command prompt.

Figure A

If the icon is already pinned in the Start menu, entering cmd is not necessary.

Step 2: Run the commands

The first command to run is

arp -a

This command will display all your ARP entries (Figure B). Naturally the -a option is not the only option available. The arp command also allows for the following switches:

-d Delete an IP address (arp -d 192.168.100.10)
-d -a Delete all entries in the ARP table
-s Add an entry to the ARP table (arp -s ADDRESS MAC_ADDRESS – Where ADDRESS is the address to be added and MAC_ADDRESS is the MAC address of the machine)

Figure B

Here you see the arp cache for two different interfaces on a single machine.

To flush the entire cache, issue the following command:

netsh interface ip delete arpcache

The above command will flush the entire ARP cache on your system. Now as soon as network connections are made, the ARP cache will begin to repopulate.

Verify the flush

Once you have flushed the ARP cache, make sure to issue the command arp -a to see if the cache has, in fact, been flushed. If it does not flush, it could be the system is a victim of a Windows bug caused when Routing and Remote Services is enabled. This is a simple bug to fix:

1.           Click Start | Control Panel.

2.           Click Administrative Tools.

3.           Click Computer Management.

4.           Double-click Services and Applications.

5.           Double-click Services.

6.           Scroll down to Routing and Remote Services.

7.           Double-click Routing and Remote Services.

8.           Set the Startup Type to Disable.

9.           Make sure the service is stopped.

Now try flushing the ARP cache again. It should work this time.

Troubleshooting

It is also possible to troubleshoot network connections using the ARP cache. For example, it is important to look out for invalid ARP entries that go to a MAC address of 00-00-00-00-00-00. If one such entry shows up, make sure to delete it from the cache using the -d switch. Say you have an ARP entry that looks like:

224.0.0.24           00-00-00-00-00-00 static

In order to delete this entry, use the arp command like so:

arp -d 224.0.0.24

And that invalid entry will be gone.

Final thoughts

There are so many ways to troubleshoot networking connections. Flushing the ARP cache is just one of those methods that is rarely thought of, but when all else fails this might be the last-gasp effort that makes you the hero of the day.

Have questions?

Get answers from Microsofts Cloud Solutions Partner!
Call us at: 856-745-9990 or visit: https://southjerseytechies.net/

South Jersey Techies, LL C is a full Managed Web and Technology Services Company providing IT Services, Website Design Services, Server Support, Network Consulting, Internet Phones, Cloud Solutions Provider and much more. Contact for More Information.

To read this article in its entirety click here.

Use Windows 7 Event Viewer to track down issues that cause slower boot times

Here’s how to use some of the new features in Windows 7’s Event Viewer to investigate a slow boot time.

Overview

Windows 7’s Event Viewer includes a new category of event logs called Applications and Services Logs, which includes a whole host of subcategories that track key elements of the operating system. The majority of these subcategories contain an event log type called Operational that is designed to track events that can be used for analyzing and diagnosing problems. (Other event log types that can be found in these subcategories are Admin, Analytic, and Debug; however, describing them is beyond the scope of this article.)

Now, within the operating system section is a subcategory titled Diagnostic-Performance with an Operational log that contains a set of a Task Category called Boot Performance Monitoring. The Event IDs in this category are 100 through 110. By investigating all the Event ID 100 events, you will be able to find out exactly how long it took to boot up your system every time since the day you installed Windows 7. By investigating all the Event ID 101 thru 110 events, you will be able to identify all instances where boot time slowed down.

Getting started

You can find and launch Event Viewer by opening the Control Panel, accessing the System and Security category, selecting the Administrative Tools item, and double-clicking the Event Viewer icon. However, you can also simply click the Start button, type Event in the Start Search box, and press Enter once Event Viewer appears and the top of the results display.

Creating a Custom View

Once you have Event Viewer up and running, you can, of course, drill down through the Applications and Services Logs and locate the Diagnostic-Performance Operational log and begin manually looking through the events recorded in the log. However, you can save yourself time and energy by taking advantage of the new Custom View feature, which is essentially a filter that you can create and save.

To do so, pull down the Action menu and select the Create Custom View command. When you see the Create Custom View dialog box, leave the Logged option set at the default value of Any Time and select all the Event level check boxes. Next, select the By Log option button, if it is not already selected, and click the dropdown arrow. Then, drill down through the tree following the path: Applications and Services Logs | Microsoft | Windows | Diagnostics-Performance. When you open the Diagnostics-Performance branch, select the Operational check box, as shown in Figure A.

Figure A

When you get to the Diagnostics-Performance branch, select the Operational check box.

To continue, type 100 in the Includes/Excludes Event IDs box, as shown in Figure B, and then click OK.

Figure B

Event ID 100 records how long it takes to boot up your system.

When you see the Save Filter to Custom View dialog box, enter a name, as shown in Figure C, and click OK.

Figure C

To save the filter as a Custom View, simply provide an appropriate name, such as Boot Time.

You’ll now repeat these steps and create another Custom View, and this time, you’ll type 101-110 in the Includes/Excludes Event IDs box and name it Boot Degradation.

Investigating Boot Time

To investigate your Windows 7 system’s boot time, select Boot Time in the Custom Views tree and then sort the Date and Time column in ascending order. When you do, you’ll see a complete history of every time you have booted your system since the day you installed Windows 7. In Figure D, you can see that we have hidden the Console Tree and the Action Pane to focus on the events.

Figure D

By sorting the Date and Time column in ascending order, you’ll see a complete history of every time you have booted your system since the day you installed Windows 7.

As you can see, the first recorded Boot Time on my sample system was 67479 milliseconds in October 2009. Dividing by 1,000 tells me that it took around 67 seconds to boot up. Of course, this was the first time, and a lot was going on right after installation. For example, drivers were being installed, startup programs were being initialized, and the SuperFetch cache was being built. By December 2009 the average boot time was around 37 seconds.

In any case, by using the Boot Time Custom View, you can scroll through every boot time recorded on your system. Of course, keep in mind that there will be normal occurrences that may lengthen the boot time, such as when updates, drivers, and software is installed.

Now, if you click the Details tab, you’ll see the entire boot process broken down in an incredible amount of detail, as shown in Figure E. (You can find more information about the boot process in the “Windows On/Off Transition Performance Analysis” white paper.) However, for the purposes of tracking the boot time, we can focus on just three of the values listed on the Details tab.

Figure E

The Details tab contains an incredible amount of detail on the boot time.

MainPathBootTime

MainPathBootTime represents the amount of time that elapses between the time the animated Windows logo first appears on the screen and the time that the desktop appears. Keep in mind that even though the system is usable at this point, Windows is still working in the background loading low-priority tasks.

BootPostBootTime

BootPostBootTime represents the amount of time that elapses between the time that the desktop appears and the time that you can actually begin using the system.

BootTime

Of course, BootTime is the same value that on the General tab is called Boot Duration. This number is the sum of MainPathBootTime and BootPostBootTime. Something that we didn’t tell you before is that Microsoft indicates that your actual boot time is about 10 seconds less that the recorded BootTime. The reason is that it usually takes about 10 seconds for the system to reach an 80-percent idle measurement at which time the BootPostBootTime measurement is recorded.

Investigating Boot Degradation

To investigate instances that cause Windows 7 system’s boot time to slow down, select Boot Degradation in the Custom Views tree and then sort Event ID column in ascending order. Each Event ID, 101 through 110, represents a different type of situation that causes degradation of the boot time.

While there are ten different Event IDs here, not all of them occur on all systems and under all circumstances. As such, I’ll focus on the most common ones that we have encountered and explain some possible solutions.

Event ID 101

Event ID 101 indicates that an application took longer than usual to start up. This is typically the result of an update of some sort. As you can see in Figure F, the AVG Resident Shield Service took longer than usual to start up right after an update to the virus database. If you look at the details, you can see that it took about 15 seconds for the application to load (Total Time), and that is about 9 seconds longer than it normally takes (Degradation Time).

Figure F

Event ID 101 indicates that an application took longer than usual to start up.

An occasional degradation is pretty normal; however, if you find that a particular application is being reported on a regular basis or has a large degradation time, chances are that there is a problem of some sort. As such, you may want to look for an updated version, uninstall and reinstall the application, uninstall and stop using the application, or maybe find an alternative.

(In the case of my friend’s Windows 7 system, there were several applications that were identified by Event ID 101 as the cause of his system slowdown. Uninstalling them was the solution, and he is currently seeking alternatives.)

Event ID 102

Event ID 102 indicates that a driver took longer to initialize. Again, this could be the result of an update. However, if it occurs regularly for a certain driver or has a large degradation time, you should definitely look in to a newer version of the driver. If a new version is not available, you should uninstall and reinstall the driver.

Event ID 103

Event ID 103 indicates that a service took longer than expected to start up, as shown in Figure G.

Figure G

Event ID 103 indicates that a service took longer than expected to start up.

Services can occasionally take longer to start up, but they shouldn’t do so on a regular basis. If you encounter a service that is regularly having problems, you can go to the Services tool and experiment with changing the Startup type to Automatic (Delayed Start) or Manual.

Event ID 106

Event ID 106 indicates that a background optimization operation took longer to complete. On all the Windows 7 systems that we investigated, this event identified the BackgroundPrefetchTime as the culprit, as shown in Figure H. Since the Prefetch cache is a work in progress, this should not really represent a problem.

Figure H

Event ID 106 indicates that a background optimization operation took longer to complete.

If you encounter regular or long degradation times related to Prefetch, you may want to investigate clearing this cache and allowing the operating system to rebuild it from scratch. However bear in mind that doing so can be tricky and instructions on doing so are beyond the scope of this article.

Event ID 109

Event ID 109 indicates that a device took longer to initialize. Again, if this is happening occasionally, there shouldn’t be anything to worry about. But if it is occurring regularly, you should make sure that you regularly back up your hard disk and begin investigating replacing the device in question.

Have questions?

Get answers from Microsofts Cloud Solutions Partner!
Call us at: 856-745-9990 or visit: https://southjerseytechies.net/

South Jersey Techies, LL C is a full Managed Web and Technology Services Company providing IT Services, Website Design Services, Server Support, Network Consulting, Internet Phones, Cloud Solutions Provider and much more. Contact for More Information.

To read this article in its entirety click here.

Modifying the Windows 7 boot loader with the Boot Configuration Data Editor tool

In Windows Vista and later versions of Windows, the bootloader was moved from boot.ini to a utility called BCDEdit. Here’s how to modify the boot config data with the new tool.

Sometimes dual-booting a system is a handy way to test new software, a new operating system, or an application that needs to be run in a specific version of Windows. Other reasons to dual-boot might include replication of a client environment.

Windows handles dual-booting by using boot.ini to display a menu of bootable choices or partitions found on the current system. In Windows Vista and later versions of Windows, the bootloader was moved from boot.ini to a utility called BCDEdit.

Recently, we decided we could make better use of some disk space that we had set aside to create a bootable VHD for Windows Server 2008 R2. There was no data other than the OS installation contained within the file because we had used it only to prepare a blog post about booting from Virtual Hard Disks. To free up the space, we deleted the VHD.

Note: Always make sure to back up any data that you want to keep before deleting or modifying partitions on VHDs. Your changes could make the partition unbootable.

Once we had the VHD removed, we thought Windows would be smart enough to clean up the boot loader, but we were not so lucky. We had Windows 7 set as the primary OS, so we were not without a system.

We started looking around for boot.ini and was directed toward the Boot Configuration Data Editor (BCDEdit) as the utility to use when editing boot loader information in Windows 7 (and in Vista too).

To begin, open the Start menu, select All Programs, and then choose Accessories. Right-click on Command Prompt and select Run As Administrator. Once in the command window, type bcdedit. This will return the current running configuration of your boot loader, showing any and all items that can boot on this system.

In this example, we decided to remove the entry for my Windows 2008 R2 installation, as we wouldn’t need it for the time being. To remove an entry, you will need to know the Boot Loader Identifier (found in curly braces in Figure A).

Figure A

we copied the whole list into Notepad and then selected and copied just the ID, braces included.

Removing an entry from the Boot Loader

One simple command got the Windows Server 2008 R2 entry out of the boot loader. At the command prompt, enter the following:

Bcdedit /delete {boot loader identifier}

Press Enter, and the Boot Configuration Data Editor (BCDEdit) will remove the entry for the ID you specified and display a message when finished. When Windows starts, the only choice available in the boot menu should be the current Windows installation.

Warning: Be careful when editing the boot configuration data. If you mistakenly remove the current instance of Windows, you may render your computer unbootable.

Have questions?

Get answers from Microsofts Cloud Solutions Partner!
Call us at: 856-745-9990 or visit: https://southjerseytechies.net/

South Jersey Techies, LL C is a full Managed Web and Technology Services Company providing IT Services, Website Design Services, Server Support, Network Consulting, Internet Phones, Cloud Solutions Provider and much more. Contact for More Information.

To read this article in its entirety click here.

Trump administration to move all federal IT into the cloud: Is it realistic?

US president Donald Trump recently signed an executive order on cyber-security that mandated federal systems move to the cloud. But, questions remain on the feasibility of that goal.

On Thursday, US President Donald Trump signed his long-awaited executive order on cyber-security, laying out his plans for addressing security in federal IT and across US infrastructure. The most ambitious mandate was that all federal IT systems move to the cloud.

President Trump’s homeland security adviser, Tom Bossert, said in a announcement that the government had spent too much time and money “protecting antiquated and outdated systems.” Bossert cited the Office of Personnel Management (OPM) hack as evidence of failing legacy systems.

Bossert said, “From this point forward, the President has issued a preference in federal procurement in federal IT for shared systems. We’ve got to move to the cloud and try to protect ourselves instead of fracturing our security posture.”

The executive order officially states: “Agency heads shall show preference in their procurement for shared IT services, to the extent permitted by law, including email, cloud, and cyber-security services.” It also calls for a report to be completed within 90 days describing the legal, budgetary, technical considerations for “shared IT services, including email, cloud, and cyber-security services,” along with a timeline for the initiatives and their potential cost-effectiveness.

Peter Tran, the senior director of worldwide advanced cyber defense practice at RSA and former US Department of Defense employee, said the anchor for the executive order will initially be the NIST Cybersecurity Framework (CSF), to both assess current risk gaps and determine a strategy moving forward. This will be the pacesetter by which all building blocks will either rise or fall specifically on the call to action to go cloud in an expedited manner…..security being a forethought,” Tran said.

However, the effectiveness of a move to the cloud to improve security among these federal systems remains up to debate. John Pironti, cyber-security expert and president of IP Architects, said that it could create a double-edged sword.

“The idea of standardization of security controls and capabilities through a cloud-only mandate in theory may make sense to establish an enhanced baseline for security, but at the same time creates a central target and common set of controls and capabilities that adversaries can then focus their attention on in order to be successful in their attacks,” Pironti said.

Following a central set of control standards and common technology platforms, combined with the centralized nature of the cloud, could actually make the federal IT systems weaker than their current iteration, Pironti said, which utilizes “distributed and varied computing assets and security controls.” And if hackers can find and exploit a weakness in this kind of system, it could lead to a bigger impact.

Pironti said that he believes the mandate will start out with the proper intentions, but if the affected government agencies simply follow the prescribed behaviors with no deviation, they may not be able to keep up with the changing threat landscape. While Pironti said that he’s in favor of accountability, he believes that the approach should be risk-based instead of mandated.

“I do not believe all agencies should be forced into a cloud model or required to follow the same set of prescriptive security controls,” Pironti said. “If an agency can prove that they are effectively operating in a reliable, available, and secure fashion then they should be allowed to continue to do so.”

Another question raised by the mandate is the feasibility of moving these systems to the cloud. Tran said that the executive order builds on an existing foundation, but the “proof is in the pudding.” The order, like other security plans, must be executed in a timely manner and show clear improvements in boosting security visibility and early threat detection, but it also must clearly show what “good” and “bad” security looks like in cloud infrastructure, Tran said.

“That’s really hard to do under an average planning and deployment timeline. Your compass needs to be ‘dead on,'” Tran said.

The impact of the executive order could also be seen in the private sector, Tran said, driving the growth of stronger policy, compliance, and governance around cybersecurity.

“The unique aspect of this current environment is security can’t effectively operate in a ‘de-regulated’ fashion by the mere nature that it’s security… Imagine if the TSA and FAA had no security protocols and structure?” Tran said. “Cybersecurity is no different whether it’s brick-and-mortar or click-and-mortar.”

The 3 big takeaways for readers

  1. Trump recently signed an executive order on cybersecurity mandating all federal IT systems move to the cloud, but questions remain about the feasibility and effectiveness of such a mandate.
  2. The move to the cloud could help modernize the systems’ approach to security, but it could also create a central point of attack for hackers, an expert said.
  3. The executive order could also impact the private sector, leading to more regulation and compliance around cyber-security initiatives, an expert said.

Have questions?

Get answers from Microsofts Cloud Solutions Partner!
Call us at: 856-745-9990 or visit: https://southjerseytechies.net/

South Jersey Techies, LL C is a full Managed Web and Technology Services Company providing IT Services, Website Design Services, Server Support, Network Consulting, Internet Phones, Cloud Solutions Provider and much more. Contact for More Information.

To read this article in its entirety click here.

Spring has Sprung at South Jersey Techies

At South Jersey Techies, LLC we are loving this beautiful weather – and so are the tulips! Drive by to see the beautiful flowers we planted this Spring.
With the change in season, now is a great time to focus on refreshing and optimizing your digital devices and data. This includes offloading unused apps, files and messages, managing your digital accounts, and ensuring your devices are up-to-date with the latest software and security patches.
Reach out to us if you need any help protecting your network or assets. We’d love to hear from you! #sjtechies #tulipseason #managedservices

Have questions?

 

Our team is here to help. Call us at: 856-745-9990 or visit: https://southjerseytechies.net.

 

South Jersey Techies, LLC is a full Managed Web and IT Services Company located in Marlton, NJ providing IT Services, Managed IT Services, Website Design Services, Server Support, IT Consulting, VoIP Phones, Cloud Solutions Provider and much more. Contact Us Today.

Website Design – Frank’s Express Car Wash

The Website Design team of South Jersey Techies has been constantly working on developing great looking websites using the latest web technologies. The most recent website developed by our team is for Frank’s Express Car Wash in Bensalem, PA; Maple Shade, NJ and Delran, NJ.

Have questions?

Our Web Design team is here to help, call us at: 856-745-9990 or visit: https://southjerseytechies.net

South Jersey Techies, LLC is a full Managed Web and IT Services Company located in Marlton, NJ providing IT Services, Managed IT Services, Website Design Services, Server Support, IT Consulting, VoIP Phones, Cloud Solutions Provider and much more. Contact Us Today.

Avoid Phishing Scams with Three Simple Tips

Phishing scams are online messages designed to look like they’re from a trusted source. We may open what we thought was a safe email, attachment or image only to find ourselves exposed to malware or a scammer looking for our personal data. The good news is we can take precautions to protect our important data. Learn to recognize the signs and report phishing to protect devices and data.

 

  1. Recognize Common Signs | Be wary of requests from unknown parties, especially if they ask for money or other sensitive information.

• Urgent or emotionally appealing language
• Requests to send personal or financial information
• Unexpected attachments
• Untrusted shortened URLs
• Email addresses that do not match the supposed sender
• Poor writing/misspellings (less common)

  1. Resist and Report | Report suspicious messages by using the “report spam” feature. If the message is designed to resemble an organization you trust, report the message by alerting the organization using their contact information found on their webpage. You can also forward your email to support@sjtechies.com for one of our Security Team members to review.
  2. Delete | Delete the message. Don’t reply or click on any attachment or link, including any “unsubscribe” link. The unsubscribe button could also carry a link used for phishing. Just delete.

If a message looks suspicious, it’s probably phishing.

 

Have questions?

 

Our team is here to help. Call us at: 856-745-9990 or visit: https://southjerseytechies.net.

 

South Jersey Techies, LLC is a full Managed Web and IT Services Company located in Marlton, NJ providing IT Services, Managed IT Services, Website Design Services, Server Support, IT Consulting, VoIP Phones, Cloud Solutions Provider and much more. Contact Us Today.

 

Let’s work together to build a safer digital environment for your business. We can increase your online safety through four simple actions, and whether at home or work, these tips make us more secure when connected. Take time to discuss them with your team so you can all become safer online!

 

  1. Use Strong Passwords | Strong passwords are long, random, and unique and include all four-character types (uppercase, lowercase, numbers, and symbols).
  2. Turn On Multi-Factor Authentication | You need more than a password to protect your online accounts; enabling MFA makes you significantly less likely to get hacked. Enable MFA on all your online accounts that offer it, especially email, social media, and financial accounts.
  3. Recognize & Report Phishing | Be cautious of unsolicited messages asking for personal information. Avoid sharing sensitive information or credentials with unknown sources. Report phishing attempts and delete the message.
  4. Update Software | Ensuring your software is up to date is the best way to make sure you have the latest security patches and updates on your devices. Regularly check for updates if automatic updates are unavailable.

In today’s digital landscape, protecting your business doesn’t have to be complicated. By adopting these simple cybersecurity practices—using strong passwords, enabling multi-factor authentication, staying vigilant against phishing, and keeping software up to date—you can safeguard your business against common threats. Remember, cybersecurity is a shared responsibility, and small actions today can make a big difference tomorrow. Stay proactive, stay protected!

 

Have questions?

 

Our team is here to help. Call us at: 856-745-9990 or visit: https://southjerseytechies.net.

 

South Jersey Techies, LLC is a full Managed Web and IT Services Company located in Marlton, NJ providing IT Services, Managed IT Services, Website Design Services, Server Support, IT Consulting, VoIP Phones, Cloud Solutions Provider and much more. Contact Us Today.

New Website Design – Snow Plow Risk Brokerage

The Website Design team of South Jersey Techies has been constantly working on developing great looking websites using the latest web technologies. The most recent website developed by our team is for Snow Removal Insurance Brokerage in Marlton, New Jersey.

Snow Removal Insurance Brokerage works directly with Retail Agents to help them understand the changes that have been implemented within the snow & ice management industry. Together they create policy with liability coverage suitable to the insured’s needs and future. SRIB is working together to change the insurance world’s perception of a greatly under-appreciated breed of contractor.

Have questions?

Our Web Design team is here to help
Call us at: 856-745-9990 or visit: https://southjerseytechies.net

South Jersey Techies, LLC is a full Managed Web and IT Services Company located in Marlton, NJ providing IT Services, Managed IT Services, Website Design Services, Server Support, IT Consulting, VoIP Phones, Cloud Solutions Provider and much more. Contact Us Today.

South Jersey Techies was a proud sponsor of Evesham Education Foundation at this weeks’ Larry Kull Memorial Golf Classic
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