Trending December 2023 # Steps To Secure Your Exchange Server # Suggested January 2024 # Top 16 Popular

You are reading the article Steps To Secure Your Exchange Server updated in December 2023 on the website Kientrucdochoi.com. We hope that the information we have shared is helpful to you. If you find the content interesting and meaningful, please share it with your friends and continue to follow and support us for the latest updates. Suggested January 2024 Steps To Secure Your Exchange Server

The online global market is one of the busiest places in the world. Millions of individuals and companies spend a lot of time online. From shopping to banking, all sorts of sensitive data are shared across the internet. It is, therefore, essential to ensure that you are secured when sharing vital information. So many organizations fall, victim to cyber-attacks because they assume hackers are only after money. Note that details like passwords of your customers and credit card numbers are other things that hackers scout for online.

Related: – Top 6 Linux Firewall Software of 2023 for Protecting Your Linux System and Server

Monitor the Exchange server

You will need to spend a lot of time keeping an eye on the server. That is because you will want to ensure that it is not under threat of getting hacked or failing. There are various tools that you can use to monitor your exchange servers but always ensure that you should not go for the wrong choice.

Use a firewall

Get an Exchange SSL certificate

What makes an Exchange Server SSL Certificate a vital consideration for securing your exchange servers is that it encrypts messages. This creates some tunnel between users and the exchange servers. That is because a hacker will not be able to tap into the message. Note that there are various kinds of SSL certificates and you will want to choose according to the size of the organization you are running.

Protect client machines

There are different ways through which viruses and other threats can get into your computer. To keep the off, you will need to find a reliable anti-virus or malware to protect the Microsoft windows client machines. This is important because one of your customers’ computer can be infected. To prevent the servers’ form getting affected as well, you can use a third-party anti-virus program to detect these treats and get rid of them.

Related: – Protecting Your Linux Keeping some Important things in Mind

Apply new patches every month

Microsoft releases new patches monthly to be used with the exchange servers. These patches are made after a weakness has been discovered in the system. By applying these patches, you will be protecting your exchange from certain vulnerability. Before implementing these patches, however, it is vital to test them before using them on your production servers.

Keep your client access server in a separate network perimeter

Microsoft recommends that you keep the client access server in a private network protected by a network perimeter. If you place the users, servers in the same network perimeter, it is vital to switch firewall ports to allow for communication with a private network.

Create a block list and filter senders

There are various blocklist tools that you can use to filter users. Blacklists allow you to distinguish the senders that your truth and those that you suspect might have malicious programs attached to their messages. The block-list works with the same concept as the ones in phones. You can choose who you to reach you and those whose words cannot get to you. Exchange servers block-list tools are available for free since they come built-in on Outlook.

Implement Data Loss Protection

You can easily share documents containing vital information like your social security number without knowing it. However, by implementing data loss protection measures, you can control the kind of emails to be shared. Data loss protection works by thoroughly scanning your email for any data that you have specified as private. If one is found, the outgoing email is interrupted. Hackers will get more attracted to your exchange servers if they know that such vital information is shared freely.

Related: – What is Web Hosting?

Run the Exchange best practice analyzer

This should go a long way in ensuring that your exchange server is functioning as it is supposed to. That is because it works by gathering all the configuration information defined by Microsoft. It then analyzes the data and provides you with a report as the administrator with all the necessary configurations to make.

Filter attachments

Some attachments will look suspicious from the word go. For example, if you are expecting clients to submit word files, a .exe file will seem suspicious. There is a way of preventing such attachments from reaching your exchange server and contaminating everything.

Conclusion

Organizations from across the world spend a reasonable amount of money for cybersecurity. That is because they understand that to protect their systems, they need to motivate their cybersecurity team properly. That is because hackers are always devising new ways of causing trouble. It is, however, good to know that securing your exchange server does not have to cost you a fortune. Microsoft provides a tool that you can use to do that for free. However, you may want to combine many strategies to strengthen your security like an SSL certificate. You should also ensure that your exchange server is updated with the right configurations and patches because outdated ones make your company vulnerable to threats.

Gerrard

Gerrard is a technology geek who likes all types of new technology and writes articles about how-to, tips & tricks. Her greatest pleasure is to share creative ideas to inspire others.

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How To Change Your Dns Server On Android

How to Change Your DNS Server on Android Benefits of Using Third-Party DNS

Although most users use their ISP’s default DNS servers, third-party solutions produce superior results. They are as follows:

You can enjoy faster speed with third-party DNS servers.

Protect yourself from ISP tracking and data sharing without your knowledge.

No-log DNS helps maintain online privacy.

Bypass geographical locks

Last, DNS providers like OpenDNS can protect against cyber attacks and malicious sites.

Apply parental controls and site filtering.

Popular DNS Services

Google Public DNS is the most popular DNS service. It supports DNS over TLS (DoT) and DNS over HTTPS (DoH), so requests are delivered over a secure channel. However, if you don’t trust Google CloudFlare 1.1.1.1 is another popular choice. According to most independent testing, it is the quickest DNS service accessible.

How to Change DNS on Android?

Note: The exact menu options might vary from one manufacturer to another before you plan to use if the selected DNS service provider supports DNS-over-TLS before setting.

Furthermore, when you use a VPN, which overrides private DNS settings, these changes have no impact.

Navigate to your device’s Wi-Fi settings. You may do this by navigating to Settings and selecting Wi-Fi or pulling down the notification shade & long-pressing the Wi-Fi symbol.

Now, navigate to your Wi-Fi network’s network settings. Depending on your phone’s brand and Android version, you need to long-press the Wi-Fi network’s name and then hit Modify Network, or there may be an arrow on the side.

Scroll to the bottom of the network information page and touch on IP Settings. If you don’t see that menu, check for an Advanced option and IP Settings.

Change this to a static value.

Change DNS1 and DNS2 to the desired values- for example, Google DNS is 8.8.8.8 and 8.8.4.4.AC.

On Android 8 Or Earlier, Follow These Steps:

Android Oreo and earlier versions do not permit modifying DNS servers for cellular networks. This means you can apply the following DNS settings only on Wi-Fi connections. Even so, the modifications are network-specific, and you’ll need to update the DNS servers whenever you join a new wireless network.

Furthermore, you’ll have to set up all network information manually; thus, these changes are only suggested for sophisticated users.

To modify a Wi-Fi network, follow these steps:

Look for the Wi-Fi network you are connected to.

Tap the Gear icon to get a list of options.

Hit View More

Tap IP Settings.

This will read ‘DHCP,’ Tap on it and change it to “Static.”

Tap on it and change it to ‘Static.’

Now, manually enter your network settings, including your DNS server. An example would be 1.1.1.1 & 1.0.0.1.

Wrap Up – Change Your DNS Server on Any Android Device.

So there you have it. Following the steps mentioned above, you can modify the DNS setting on any Android device. The steps might vary a bit due to the brand or Android version. They will work for all. We hope you will be able to change the DNS, IPv4, and IPv6.

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Aayush Yadav

What’s The Best Way To Exchange Your Currency And To Check The Rates

If you live in the US and are looking to go abroad for business or pleasure, chances are that you’re going to change your dollars into the native currency of the place you’re going to. There are many ways in which this can be achieved and if you fall in the camp of would be travelers, this is the perfect place for you to research on topic.

Why Exchange Currency?

Imagine a scenario in which you, a resident of San Diego, California, for example, are traveling to a foreign country for tourism. To properly enjoy yourself, you will have to pay for every amenity or souvenir.

Unfortunately, most countries won’t accept the US$ as it is, which means you will have to convert it into the relevant currency. Doing this bears some significant benefits and the main one of convenience is rather obvious.

In one instance, you may be in a foreign establishment that won’t take your Mastercard and prefers cash. Your US dollars won’t work with them and need to be converted. If you’re American and have medical insurance under Aetna, if you get sick, the insurance won’t cross borders, which means cash or the aforementioned card payments will suffice. In short, converting your currency provides you with multiple options that make traveling easier.

How to Properly Pull Off an Exchange

Now that you know why you should do it, it’s time to know how it’s done. When it comes to currency exchange, there are multiple ways in which this can be done and they are as follows:

via bank visit

via money transfer

via airports or kiosks

via card payments abroad

Going to The Bank

The bank is an obvious place to start, because as a financial institution, it’s naturally going to have this service. If you went to a JP Morgan Chase Bank branch, or any other bank for that matter, you could go through the process or receive help. The process is fairly easy as it requires you to hand your currency over and receive the equivalent value for the desired currency.

Unfortunately, using banks comes with some drawbacks. The drawbacks may include high fees or inconvenient rates. Let’s see other cons that are as follows:

as we mentioned, different banks have different exchange rates (with some being unfavorable)

the fees involved in the process of exchange are often pretty high

going to a physical location may be an annoyance is required for this method

Using Money Transfers

Money transfers are often thought as the best way of conducting a currency exchange for a few reasons. To sum these reasons up, money transfers are as easy as bank exchanges, but lack the high fees, unfavorable exchanges and the need for a physical location.

Money transfers are often conducted via mobile phone by connecting to a platform that provides the service. After this, the following guide can be used to complete the procedure:

Step 1: Signing into the platform

Step 2: Requesting a transfer and providing all the necessary in terms of the amount, the amount of money and both the original and the required currencies

Step 3: Entering the recipient’s details, which in this case are your own

Step 4: Handing over the money, which can be done via bank transfer

Step 5: Confirm the details of the transfer by looking at a page that displays all parts

Step 6: See verification of a successful transfer

Exchanging Upon Arrival

If any of the above methods don’t interest you, exchanging currency at a foreign airport after landing is another thing you can consider. This method is actually the most commonly used, according to statistics. Banks at the airports are among the many physical locations where currency exchange services can typically be found. Exchange rates in foreign countries tend to be on the extreme end of unfavorable.

Using Your Credit or Debit Card

If the use of cash isn’t something that appeals to you, there’s always the option of using cards as payment. Fortunately these methods of payment are widespread with a common example of this being American Express, which is found in over 100 countries. As a result, paying via these means in any place shouldn’t be a problem.

Unfortunately not every place allows this payment method. American Express, for example, doesn’t work in countries that are sanctioned by the US. Also, some businesses might not even have the equipment to allow card payments. Street vendors, for example, usually don’t take cards, so if you have cash, life will be a lot easier.

Checking The Exchange Rate

The conversion of currency is only ever dependent on the exchange rate. This is described at the rate at which one currency is exchanged for another. It can also be described as the value of one currency equated to that of another.

For example, recently, one U.S. dollar equated to about 0.80 pound sterling. At some point, the exchange rate will fluctuate due to a myriad of global and economic factors.

The changing of the rate is something that is best looked at on the internet. From there, you will be able to look at the different rates from various institutions across the world.

Final Thoughts

When it comes down to it, conversion is something that requires one to be prepared to the best of levels. From what we have seen above, the above ways show this in one way or another.

This Tiny Google Product Could Help Secure Your Accounts

You may have heard about a weird new product from Google: a little device called the Titan Security Key that will serve as a form of two-factor authentication. That means you would use the gizmo as part of a login process to verify that you are, in fact, you. Instead of getting a text message with a code, you plug the security key into your computer and press a button.

You can’t buy one of these yet (Google says it will be available to the general public “soon”), but the announcement is a good reminder that setting up two-factor authentication on your accounts is one of the easiest ways to keep your info private— even if your username and password are compromised.

“We see consistently that in a large percentage of cyber incidents, had individuals had some sort of multi-factor authentication, they would have at least delayed—or made it slightly harder—for attackers to gain access,” says Oren Falkowitz, the CEO of Area 1 Security, a firm that helps prevent phishing attacks.

In short: using two-factor authentication is smart, but a physical key isn’t your only option.

Text me?

Security experts say that receiving a code by text is the weakest of the two-factor options. Getting verification via text is pretty simple: you try to log onto an account, but first have to enter a code that’s sent to your phone. It’s easy to set up and understand—and certainly better than nothing—but the method has its flaws.

“I would say SMS is by far the worst,” says Lorrie Faith Cranor, a professor of computer science at Carnegie Mellon University and a former chief technologist with the Federal Trade Commission. “[That’s] because SMS relies on an insecure channel in the phone network that was never meant to be used for security.”

Besides the fact that the channel isn’t secure, a related problem with using SMS to receive a code is “account hijacking,” Cranor says. In that case, an attacker may use a tactic like this: they’ll go to a phone store, pretend to be someone else, and have the victim’s phone number transferred to a new phone.

This could lead to unpleasant scenarios like an attacker withdrawing money from a victim’s bank account, Cranor says. “We’ve also seen it where they go to the victim’s Twitter account, and then start tweeting as them,” she adds.

Actually, don’t text me

Security experts say that there are better options than just getting that code texted to you, though. One of those is using an app like Authy, or another called Google Authenticator, to generate the six-digit number you need. Those codes expire after a set amount of time, like a self-destructing message on Mission: Impossible.

And then, of course, there’s using a gadget that you plug into your computer or connect via Bluetooth. One well-known choice is a YubiKey, and another is the forthcoming item from Google. “It’s very hard to circumvent a physical security token,” says Amine Hambaba, senior director for security at Shape Security. That’s because if a remote attacker had access to your username and password, they still would need to get their hands on a tangible object.

Google says that they’ve had success using them internally. “We have had no reported or confirmed account takeovers since implementing security keys at Google,” a company spokesperson says via email. And the Titan key doesn’t work with just Google accounts—you can also use it with other accounts that support using a security key.

Ultimately, a physical key is a strong way to secure an account, but it’s not a shield against all online threats. Having one won’t stop you from a downloading a malicious file, for example. And there are obvious drawbacks to using a physical object for authentication.

“I think it’s good for security,” says Cranor, of CMU. “But it’s not always the most convenient approach.” That’s because you have to carry it with you to actually use it, like an old-school house key. “It’s another thing to have to keep track of, and manipulate,” she adds.

Whether or not you plan on buying a Google key, it makes sense to turn on two-factor authentication on key accounts that allow it—head over to sites like Facebook and Gmail and do it now.

Outlook Error 0X800Cccdd, Your Imap Server Closed The Connection

There have been reports that some Microsoft Outlook users encountered an error code 0x800CCCDD error while sending or receiving emails through their IMAP account. There is an error message associated with this error code that looks like this:

Your IMAP server closed the connection, Error code 0x800CCCDD

If you are experiencing a similar problem with your Outlook application, then read on. We have outlined some potential solutions below that may help you resolve this problem.

What causes Outlook Error 0x800CCCDD?

You might have encountered the Outlook IMAP Error Code 0x800cccdd because of the following possible reasons:

The Send/Receive Groups feature in Outlook usually causes this error. In such a case, you will need to disable the Send and Receive feature in Outlook and see if it works.

Sending and receiving operations in Outlook must be completed within a certain period of time by default. In case your Internet connection isn’t good enough, you may encounter this error.

In some cases, this error may occur when connecting through IMAP. If this happens, try creating a new Outlook profile and resyncing your account.

You may also encounter this issue if your Outlook Data File becomes corrupted. This may require you to use chúng tôi to repair it.

Now that you know the causes of this error code, let’s explore the solutions and find out which one works best for you.

Outlook error 0x800CCCDD, Your IMAP server closed the connection

To fix the Outlook error 0x800CCCDD, follow the below suggestions:

Disable Send and Receive feature

Add the email account again

Check Your Internet Connection

Create a new Outlook Profile

Let’s now see them in detail:

1] Disable Send and Receive feature

Most often, this error occurs when using Outlook’s Send/Receive Groups feature. For such cases, you will need to disable the Send and Receive feature and check if it solves the issue.

Open the Microsoft Outlook application.

On the ribbon menu, select the Sign / Receive tab.

From the list of available options, select Define Send/Receive Groups.

Select All Accounts under Group Name on the next page.

Next, uncheck the box for Schedule an automatic send/receive every [ ] minutes.

Once you have made the above changes, check if you still encounter the 0x800CCCDD error code. If the problem persists, continue to the next potential fix below.

2] Add the email account again

This problem may also occur when email accounts connected to Outlook have corrupted temporary data. In this case, you need to recreate the email account using the steps below, and that should solve the problem.

Once you’ve landed in the Control Panel interface, search for mail in the upper right-hand corner.

From the search results, tap on Mail (Microsoft Outlook).

Once that is done, select the email you just created and make it the default.

After you made the above changes, open Outlook again and check if it solves the issue.

3] Check Your Internet Connection

It is also possible that you are experiencing problems as a result of a poor network connection. The only thing you can do in such a case is to wait until your internet is again available. You can reboot your router if you are connected to the internet through it. When the problem persists for a long time, you can contact your Internet Service Provider.

4] Create a new Outlook Profile

If the above solution does not work, creating a new Outlook profile could resolve the problem. This method worked effectively for many users experiencing this error code.

First of all, close the Outlook application.

Then open the Control Panel.

Finally, close the Outlook application and restart it to restore its original state.

Once you perform the above steps, check to see if it resolves the issue.

How to reconnect Outlook to the server? How to fix an error in Outlook?

Error codes in Outlook have meanings associated with them. Therefore, you should search for solutions using the error code. If the Outlook app is not working, you must repair it.

Related Post: Fix chúng tôi problems, errors and issues.

How To Check Server Powershell Uptime?

Introduction to PowerShell Uptime

Uptime is a metric that denotes and it measures the successful operational duration of a computer network or hardware. IT industry terms the duration of the operational system as uptime. In PowerShell, the cmdlet gives the elapsed time of the recent boot of the operating system and this function is introduced in PowerShell 6.0. To fetch the uptime on Linux, Windows, and macOS, the user can go for Get – uptime cmdlet in PowerShell. The –since the command is used to fetch the recent time and date of the operating system is booted.

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What is PowerShell Uptime?

PowerShell is used for configuration management and task automation using a command line function or scripting. PowerShell is executed on macOS, Linux, and Windows. Uptime command executes the information about how the system is running together successfully with the current time, number of running sessions, number of users and sessions, system average load for the past one minute, five minutes, and fifteen minutes.

How to Use PowerShell Uptime?

Hardware components like cables and switch keyboards are connected to form a server. It is off-site and works as intermediate transit and thus forms the crucial part of the operation. So the company’s infrastructure team consists of dedicated weekly or daily tasks to monitor the performance of the system via different metrics. Uptime is one of the mandatory metrics to measure the system performance, and it measures the amount of time that the system is ON without any shutdown or restart. The user doesn’t want the system to fail in the middle of the tough load and so he checks the uptime of the system. An Infrastructure team can fix the system and application health and manage it to prevent unexpected downtime. The diagnosis should be minimal so the user can fix the issue easily to ensure the company’s efficient working as time is money, and the business doesn’t want to face any unexpected shortage.

To ensure this Microsoft PowerShell is launched, keep an eye on uptime. A high uptime rate increases the system’s availability and reliability, whereas downtime is disturbing in terms of reputation and cost.

How to Check Server PowerShell Uptime?

Capacity management should be planned, and there should be considerable resources to manage the needs of the company. Based on the uptime, there should be a periodic check on machines whether it needs a restart or replacement. Hence uptime is a tedious measure in the business.

The user has to understand the terms of the common information model and windows management instrumentation. WMI is composed of multiple extensions and offers details about the operating system. Whereas the common information model provides management details like properties of the device and application. It also includes the business tools that enable IT to know about the infra and they can find it without any delay. The admin can access the common information model like uptime and other properties via WMI.

PowerShell Uptime Server 4 Ways

The PowerShell uptime can be found and fixed in four ways, and they are given below:

1. Windows Management Instrumentation Querying

The user can find the uptime of the windows server by WMI queries. The extension of WMI is used to calculate uptime in a class known as Wi32_operating system, and it is built with multiple properties. The Lastbootuptime command explains when the system has been rebooted recently. It also requires the CIM data, and it should be fixed.

Code:

Output:

The output will be in the date and time format that is used to compute the uptime.

2. Windows Event Log

The admin can access this data in PowerShell via Get –win event command or get –eventlog command. It gives the details of event tracing logs and event logs placed on remote and local computers. Rather than viewing all the complete log files, the user can search the metrics and view them using individual ids. The code in PowerShell is used to get the last restart date and time.

Code:

Output:

The important parameters in Get-winevent are:

computername: Gives the name of the computer where the system log is stored.

Credential: User account which has the permission to perform this action.

Filterhashtable: Takes the queries in hashtable format.

filterXML: Gives the structured XML query.

force: Gives the debug log if the name of the computer has wildcard characters.

3. Using the Get-uptime Command

The admin can use Get-uptime to fetch elapsed time of the last reboot.

Get –uptime and [-since]

Output:

4. Custom Scripts

The user can develop their scripts in groups develop. The command below gives the script executed by a computer and parses the event log in the computer to find the last restart time. Then it computes the total time the server is running. It also gives the history of the computer’s start and stops time.

Code:

-/ get –serveruptimereport .ps1 –the name of the computer comp 1

Output:

Conclusion

Hence PowerShell helps the business to give uninterrupted services to the users. Classifying the cause of downtime can help in capacity planning, budgeting, better infrastructure management, and decision making.