The most common mistake when setting up Wi-Fi routers. The most common mistake when setting up Wi-Fi routers How to respond to a warning from Avast about a router vulnerability

Screen Trouble-shooting allows you to change default settings to resolve possible problems with the operation and compatibility of Avast Antivirus.

It is recommended to leave the default configuration. They should only be changed if you have a thorough understanding of Avast Antivirus or if requested by an Avast support representative to resolve problems. After making any changes, click OK to save the settings.

Note. Other troubleshooting information can be found on the Getting Started page.

Manage Troubleshooting Settings

• Allow scanning for rootkits at system startup: Scan for rootkits during PC startup, before most applications and services are loaded. To ensure maximum protection, this setting is enabled by default. Unchecking this checkbox may speed up startup slightly, but will weaken your virus protection.
• Allow direct access to drives when Avast performs startup scans: Allow Avast startup scan to access and scan all disk space (including moving files and file fragments that may contain malicious code). By default, this option is enabled. Unchecking this checkbox may speed up boot scanning slightly, but will weaken your virus protection.
• Skip checking digital signatures of infected files: Allow Avast to report all files as suspicious, even if they come from a trusted publisher, speeding up the scanning process. However, this setting is disabled by default to avoid cases of false alarms because trusted files with valid digital signatures Not are detected as malware and therefore are not removed.
• Enable Avast Self-Defense Module: Prevents all core Avast Antivirus files from being modified or deleted. By default, this option is enabled. Unchecking this checkbox may allow attackers to modify and delete antivirus files to disable antivirus protection and infect your PC.
  Note. Clear this checkbox only temporarily when requested by an Avast support representative to resolve specific issues.
• Load Avast services only after loading other system services: Selecting this option delays loading Avast Antivirus until all other system services have finished loading, which may speed up the PC startup process, but will temporarily leave the system unprotected from malware. By default, this option is disabled to allow Avast services to start at the very beginning of the PC boot and ensure complete security.
• Restrict access to the program for a guest account: Restrict access to and changes to Avast settings for guests (secondary accounts used to log into your PC). This parameter enabled by default so that only registered users have permission to perform such actions. Unchecking this box will allow all users (accounts) to access and change the settings.
• Enable hardware-assisted virtualization: Improve virtualization performance. Avast uses hardware virtualization in its Anti-Rootkit, Sandbox, CyberCapture, and Self-Defense components. By default, this option is active. If Avast detects other software on your PC that uses virtualization, this option will be automatically disabled. If Avast Not software installed on your PC that uses virtualization is detected and is causing compatibility and performance issues, we recommend temporarily disabling this setting.

Enabling Passive Mode

Passive mode disables all active protection, including various security tools and the firewall. In this mode, you can use several antivirus programs simultaneously without reducing the performance of your PC and the reliability of virus detection. In passive mode, Avast receives all program updates and virus definitions, allowing you to run manual scans to detect problems on your PC. However, Avast active protection Not works.

This feature is disabled by default unless you install Avast on a computer that has another antivirus program installed. To manually activate passive mode, click the slider Turned off so that it changes the value to Included. Then click OK And Reboot now to confirm the changes.

If you want Avast Antivirus's active protection to protect you from malware and other security threats, make sure the passive mode switched off, and the following conditions are met.

• All third-party antivirus programs have been removed.
• The main screen of Avast Antivirus displays You are protected.

Note. If Avast is the only antivirus software installed on your computer, enable passive mode only temporarily to eliminate certain malfunctions.

Restoring default values

Troubleshooting may require you to restore your Avast Antivirus settings to their default settings. To do this, follow these steps:

1. Select the check boxes for one or more of the following options to select the settings you want to restore.
   • Program settings (with standard scanning types): All program settings, except screen settings.
   • Screen settings: Screen settings only. Changing screen settings may affect the protection status.
2. Click Reset to restore your settings.

Action Reset removes all your user settings. This action cannot be undone.

Note. Before restoring default settings, you can back up your settings by selecting Settings Back up settings.

Managing redirection settings

If you are having problems sending or receiving messages Email during use mail screen with an email client ( Microsoft Outlook, Mozilla Thunderbird etc.), you can fix this problem by identifying the ports that are used by your email service provider in the Mail.

By default, each protocol has the standard port numbers listed below.

SMTP port(s):	25 857	Protected ports:	465
POP port(s):	110	Protected ports:	995
IMAP port(s):	143	Protected ports:	993
NNTP port(s):	119	Protected ports:	563

If you (or your email service provider) use other ports, enter them in the text boxes next to the appropriate protocols to ensure that Avast scans your email messages. Use commas to separate multiple port numbers.

In a text field Ignored addresses enter the addresses of services or ports that you want to exclude from scanning (for example, smtp.example.com). If necessary, separate multiple addresses with commas.

Selecting a checkbox for an option Ignore local communication Prevents Avast from scanning internal system communications between applications running on the PC. By default, this option is active. Disabling this setting will allow Avast to scan all email communications, which improves security but may reduce system performance.

Avast 7 and problem with TCP\IP Internet

On December 5, 2012, some users using AVAST antivirus encountered problems with network connections and Internet operation.
The antivirus triggered a false alarm on the TCPIP.sys system file, which caused all network connections to be disconnected.
If you have Avast antivirus installed on your computer and there is a problem with the Internet and network connections, then this is the place for you. There are several ways to solve this problem.

Method No. 1(thanks to Obramko from the official avast forum for the patches)

Download fix for Windows XP (SP3)
Download the fix for Windows 7

Instructions for how the patch works:
1. Download. Unpack it onto the desktop of the faulty computer. (right click on the archive, select "extract to

ticking folder"
2. Disable all Avast screens (right click on the Avast shortcut near the clock and select “manage screens”

On old ones operating systems type Windows XP Sp2 may require a separate patch to unlock

network connections.

Download patch for Windows XP SP2.

To find out Windows version XP, click Start, right click on "My Computer" -> "Properties" there will be

operating system version is shown.

Method 2.

The People's Council says:
1.Restore the latest working copy of the system,
2.Download and reinstall Avast and “ignore” this defect.

How to reinstall Avast.
1. Download to HDD full avast installer!
2. Download the avast! removal utility to your desktop. (http://files.avast.com/files/eng/aswclear.exe)
3. Remove installed Avast. (Start, Control Panel, Add/Remove Programs)
4. Restart your computer. Enter safe mode (press F8 before Windows loads)
5. Run the avast removal utility. (aswclear.exe) specify the version and path to the program.
6. Restart your computer. (normally)
7. Install new version Avast and restart the computer.

Note: Avast! Removal Tool can be used without uninstalling the Avast program itself.
To do this, you need to disable self-defense.
1. Open Avast
2. Settings
3. Troubleshooting
4. Uncheck "Enable self-defense"

Method 3.

Find the folder C:/Windows/system32/dllcache, it contains backup copy pcpip.sys file
You need to download or copy this file to the folder C:/Windows/System32/drivers and restart your computer.
Or copy the tcpip.sys file from the installation disk (link)
Important! Download the tcpip.sys file and copy it to the WINDOWS\system32\drivers folder.

Method 4.

1. Enter Safe Mode (press F8 before Windows loads)

2. Click Start -> Run -> regedit and delete 2 items in the registry

HKEY_LOCAL_MACHINE/System/CurrentControlSet/Services/Winsock
HKEY_LOCAL_MACHINE/System/CurrentControlSet/Services/WinSock2

3. Open the folder %windows%/inf, find the file Nettcpip.inf in it, open it using notepad (right click, open

using: select notepad) find the section in the position Characteristics = 0xa0 change

Open the "General" tab - select Install -> Protocol -> Add.
In the protocol selection menu, click "Have from disk"
Copy a file from disk: write the path C:/windows/inf then click OK.
Select Internet Protocol (TCP/IP) and click OK again

Hello! Today I decided to write a short article in which I will tell you what mistake is most often made when setting up routers on your own. Caike problems appear later and how to fix everything. Where do I even get this information from?

Now look a little to the right, in the right column of the site. You see, there is the total number of comments that were left on this site. I don’t know what number you see there now, but at the moment it’s almost 9000 comments (8894 to be exact).

Almost all the comments are questions that I had to answer, advise something, provide a link to the desired article, etc. What am I getting at, these comments are a great source of unique information both for me and for visitors to this site. These are unique cases, I would even say life problems :).

Also, most of these comments relate to problems that arise during the setup and operation of routers, wireless adapters, Wi-Fi networks, etc. So I made some conclusions from these comments, and from articles that relate to this most popular error.

Network without Internet access

Yes, this is the most popular problem. I wrote about her in an article. By the way, the article is also no less popular :).

Why does this problem occur and why is it the most popular?

It usually occurs due to the exact fact that when setting up the router incorrectly indicate the parameters provided by the provider.

Also, pay attention to the binding by MAC address. If your provider does it, then do not forget to clone the MAC address in the router settings. Just clone from the computer to which the Internet was connected.

And also, in properties Wireless network connection, or Connection via local network V Internet Protocol Version 4 (TCP/IPv4) you need to set to receive IP and DNS automatically.

Here is the most common mistake and its solution.

And one more important point

If you have a provider for which it was created on your computer before installing the router special connection, and after installing the router the Internet works only on one computer, or works while this computer is turned on, then you need to clarify something here.

You see, the router itself must establish a connection to the Internet, not the computer. You need to delete the previously created connection on your computer. And in the properties of the network adapter, set to receive IP and DNS automatically.

We specify all the parameters that the provider provides only in the router settings. Connecting on a computer, if you have a router, is not necessary.

I also wrote an article on this issue.

Afterword

I don’t know how useful this article was for you, but I hope that my time was not wasted.

Before setting up a router, the main thing is to understand how it works and specify correct settings, which your provider gave you when you connected to the Internet. If you don’t know what parameters to indicate and what to choose, then just call the provider and ask.

As always, ask questions in the comments, we’ll sort it out. Best wishes!

Until recently, I didn't even know that Avast router scares its users with "scary" warnings regarding their routers. As it turns out, Avast antivirus is checking Wi-Fi routers. It gives results that the router is not configured correctly, the device is vulnerable to attacks, or in general that the router is infected and infected, and attackers have already intercepted DNS addresses and are successfully redirecting you to malicious sites, stealing data credit cards and in general everything is very bad. All these warnings, of course, are seasoned with a dangerous red color and confusing instructions that even a good specialist without beer will not understand. I'm not even talking about ordinary users. This is what the problems found on the D-Link DIR-615 router look like:

The device is vulnerable to attacks:

The solution is, of course, updating the router firmware. Because what else 🙂 Avast can also display a message that your router is protected by a weak password, or the router is not protected from hacking.

In some cases, you may see a message that your router is infected, and connections are redirected to the malicious server. Avast antivirus explains this by saying that your router was hacked and its DNS addresses were changed to malicious ones. And there are instructions for solving this problem for different routers: ASUS, TP-Link, ZyXEL, D-Link, Huawei, Linksys/Cisco, NETGEAR, Sagem/Sagemco.

In short, all these recommendations are aimed at checking DNS addresses and DNS-related services. Through which attackers can change the DNS on your router and redirect you to their malicious sites. There is detailed instructions how to check everything on routers different manufacturers.

How to respond to warnings from Avast about a router vulnerability?

I think this question interests everyone. Especially if you came to this page. If you are wondering how I would react to such warnings from the antivirus, then the answer is simple - not at all. I am sure that Avast would have found holes in my router through which I could be hacked. I just have Dr.Web. He doesn't do such checks.

Maybe I'm wrong, but no antivirus other than Avast checks the Wi-Fi routers to which you are connected for various kinds of vulnerabilities. And this feature, called Home Network Security, appeared back in 2015. In Avast 2015 version.

Avast scans your router for device security issues. Although, I don't fully understand how he does it. For example, how does it check the same password for entering the router settings. Does it follow the user, or is it a selection method? If you guess it, the password is bad 🙂 Okay, I’m not a programmer.

Personally, I believe that all these warnings are nothing more than simple recommendations to strengthen the security of your router. This does not mean that someone has already hacked you and is stealing your data. What Avast offers:

• Set a good password and update the router firmware. They say otherwise you may be hacked. Ok, this is already clear. This doesn't have to be signaled as some kind of terrible vulnerability. Although again, I don’t understand how the antivirus determines what version software router is out of date. It seems to me that this is impossible.
• The router is not protected from connections from the Internet. Most likely, this warning appears after checking open ports. But by default, the “Access from WAN” function is disabled on all routers. I highly doubt that anyone will hack your router over the Internet.
• Well, the worst thing is the substitution of DNS addresses. If any problems with DNS are detected, Avast directly writes that “Your router is infected!” But in 99% of cases this is not the case. Again, almost always the router automatically receives DNS from the provider. And all functions and services through which attackers can somehow spoof DNS are disabled by default. It seems to me that very often the antivirus misunderstands some user settings.

Something like this. Of course, you may disagree with me. It seems to me that it is much easier to access the computer directly and infect it than to do it with the router. If we are talking about an attack via the Internet. I will be glad to see your opinion on this matter in the comments.

How to protect your router and remove the warning from Avast?

Let's try to figure out each item that Avast is likely to check and issue warnings.

• The router is protected with a weak password. No encryption. In the first case, the antivirus has a password that you must enter when entering the router settings. Typically, the default password is admin. Or not installed at all. And it turns out that everyone who is connected to your network can go into the router settings. Therefore, this password needs to be changed. I wrote how to do this in the article: . As for the Wi-Fi network password, it must also be strong, and the WPA2 encryption type must be used. I always write about this in instructions for setting up routers.
• The router is vulnerable due to old software. This is not entirely true. But, if there is new firmware for your router model, then it is advisable to update it. Not only to improve security, but also for more stable operation of the device and new functions. We have instructions on our website for updating software for routers from different manufacturers. You can find it through the search, or ask in the comments. Here it is for .
• DNS settings have been changed. The router is hacked. To be honest, I have never seen such cases before. As I wrote above, all services through which this can happen are disabled by default. Most often, the router receives DNS from the provider automatically. The only thing I can advise is not to manually enter DNS addresses that you are not sure about. And if you manually specify addresses, it is better to use only DNS from Google, which: . This is also recommended in Avast recommendations, which can be viewed on the official website:. There are detailed instructions for solving DNS problems for almost all routers.

That's all. I hope I was able to at least a little explain these warnings in Avast antivirus. Ask questions in the comments, and don't forget to share useful information on this topic. Best wishes!