Networking

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Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.

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Hi,

One of the printers in our office network would get disconnected every now and then. It is my boss's printer, only used by him. It would be working fine and not working all of a sudden. I had to remove the printer and rejoin it into the network. I use wire connection.

Any ideas? thanks
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Exploring ASP.NET Core: Fundamentals
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Exploring ASP.NET Core: Fundamentals

Learn to build web apps and services, IoT apps, and mobile backends by covering the fundamentals of ASP.NET Core and  exploring the core foundations for app libraries.

As you can see from the picture below, My Speedtest results are fine,
my VPN connection is fine .... in fact, everything is fine with my internet connection
except that Windows 10 (1803) reports that I have no internet connection.
(Troubleshooting suggests a "Network Reset")

This isn't a really a problem and I'm ignoring it.

Can some experts speculate as to why Win10 is reporting incorrectly?

NO-INTERNET.jpg
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Hi,

Our users scan to their scan folder from the copiers. And the user can access and open the files they have personally scanned to their scan folder.  
Now here's the problem.  After they have scanned that file to their scan folder they move it to another network storage location for other staff to see. However, the other staff cannot open the file but the person who created the scanned file obviously still can.

I have a windows domain environment and the Document file server is on a server 2016.

kind regards,
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Hello,

I have a cloud server where I am hosting a website. It is a Windows Server 2012 R2. Recently I noticed a message in my account control panel saying something like this:

"CRITICAL NETWORK - 384 kbit/s received       12.11 MBit/s transfered"

This is the first time I received a message like this. The server has been operating since 2015.
I am not a network administrator so I do not really know how to proceed. So, I will very much appreciate any support/help you can provide to find out what is going on.

I had watched the Network Activity in Task Manager and I am attaching a screenshot just as a reference. Maybe I need to go over log files but I a not sure which ones are the correct to review and how to proceed.

For example, I watched the System log and I see error entries like this:

"A fatal alert was generated and sent to the remote endpoint. This may result in termination of the connection. The TLS protocol defined fatal error code is 10. The Windows SChannel error state is 1203."

I found the error below in the Administrative Events log:

"The RD Session Host server received large number of incomplete connections.  The system may be under attack."

Something I should say is that I use Remote Desktop to connect to my cloud server.

Task Manager Network Activity Screenshot
Respectfully,
Jorge Maldonado
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I have a network which currently has the voice and data all on the same network space (192.168.27.1/24). The DHCP server is a Draytek 3900 Series Firewall and the network switch is Catalyst 2960 L series.

I have access to the CLI on Cisco but have zero experience using the command line interface so ideally would be better if we can configure the network switch to allow me to access via a browser (if thats easier for configuring switch).

Any advice on how to achieve this would be appreciated.

Thanks
Sycamore IT
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Our company website is working fine and is accessible externally however all internal clients cannot access the site through our Smoothwall filter.

Our website is on the same domain as our internal domain and we have a www record in DNS pointing to the external web server’s IP address.

None of our clients can navigate to or ping the website. I logged into the Smoothwall and under the IP Tools section ran a ping to the company website and got 100% packet loss yet pings to all other and obvious blocked sites get through fine so it’s not filtering.

Also if I run the ping tests from the 4 internal Ethernet port interfaces we have setup in Smoothwall I get a 100% failure yet if I use the external Ethernet port it gets a working ping.

It seems to be a DNS issue and the Smoothwall doesn’t seem to know how to either get to our website or deal with the response back from our internal DNS server, or possibly isn’t getting a response back.

The strange issue that has really stumped me is both my IP address and one other in our internal range can access the site fine internally. My IP and the second one that works are both added as Exceptions in the Smoothwall but so are my colleagues and they are all getting site unavailable.

This has been working fine. Any ideas/pointers?
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error we are getting is this connection is not private.

this is on a school network

why are some getting it and others arent getting it
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When I try to access the admin page on my Netgear NASRN214, I get the error : connection refused.   I can access the shared network drives.
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Hi,

I just enabled DNS-Over-HTTPS in my google chrome and wanted to know how to set it in the iPhone/iPad.   Haven't been able to do ti; how can I enable DoH in my iPhone/iPad?
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In vb6 I use SQL like e.g.  select * from DEBNAW where ucase(DEBNAME1) LIKE '%JAN%'
on stand alone Pc its fast 600 returns and displayed and sorted in 1  second
on network  Vmware ,  same call 3 seconds ,  users complain about this
would this be possible to speed up??[
pc.png
netwerk.png
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Learn SQL Server Core 2016
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Learn SQL Server Core 2016

This course will introduce you to SQL Server Core 2016, as well as teach you about SSMS, data tools, installation, server configuration, using Management Studio, and writing and executing queries.

One pc in network must write to a random file, on a shared map ,   to a specific record nummer one string in a field  without closing the file it will do that on a event or command  , thus update that record with new string
Other Pc must open that file, keeps it open, and reads every 2 second that record, if string has value
it will read it and sets record to zero spaces and update file
How  to do this without conflict ???
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I have installed SEPM 14.2 in an air-gapped network, and am using the .jdb file to provide signature updates.  When I create a client install file, it keeps giving the error that the signatures are out of date or the signature is is unusable.

I have used cleanwipe to clean up the client install, then recreate the installer files from scratch and try again, but can never get a working client.

I reverted back to SEPM 12.1.6 to test, and it works fine, but unfortunately 12.1.6 is not compatible with the latest versions of win10 so I need to use 14.2.

Any ideas?
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This is an odd issue I can't figure out.  I have several remote users who log in to our network through a Sonicwall using NetExtender then into our Terminal Server through Remote Desktop.  They are set up in the Environment tab in Active Directory to start the specific program they need upon login so they are just taken directly to the login for that program (Abila HRMS HR program).

One user (MP) can login just fine and after connecting through Remote Desktop they see the login screen for Abila HRMS. This is where the problem starts.  The user logs in to HRMS and then just sees a blank screen (note: this user is using a laptop).

I had another user (SK) login at her Desktop computer using the other user's credentials and after logging into HRMS, she sees the HRMS program running minimized.  She maximized the program and disconnected from the session leaving the program up and then the other user (MP) was able to login to HRMS and see the program.  But if he logs out and tries to get back in, the same thing happens.  I tested MP's login from a laptop and had the same issue, I just see the blank screen.

Basically the HRMS program is starting minimized and the user MP can't see it as it must be off screen on his laptop (and from the laptop I tested from), but the user SK from her desktop can see the minimized program at the bottom and then maximize.

Is there some sort of setting that would force the program to start maximized for this user?
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I am looking to develop an automation tool that can assist a NOC operation with WAN outage recovery without technician interaction. The automation tool will run in the lan environment (with no external access) and interact directly with the WAN interface. Please note this tool will not interact with any third party devices outside of the WAN environment. The test environment has Cisco Routers/Switches and uses Spectrum Monitoring.  Looking for suggestions on use cases and example event flow to develop on.
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I have a client with a SonicWall TZ105, he currently has a tunnel from his home office to his work location.  He just purchased a Windows 10 laptop and wants to VPN  in when he is travelling.  Does the unit come with a license so he can do this or is an additional license required to be purchased and installed?  What is the best client to use on the laptop?
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Don't laugh...

I have a new client.  They have four computers in the office and the owner refuses to allow them to connect to the internet.

Of course, they have email so once a day, the users can connect, check mail, reply, then get off of the internet.

My fix has been showing the users how to change the default gateway to get them on and off, but that's too many mouse clicks.

I'd like a powershell or something that'll be like an on/off switch.  Double click it, you're on, double click it again, you're off...something like maybe diable NIC or something.

I'm lazy.

Anyone help me out with that?

:)

Thanks
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Hi expert,

I'm wondering if there's any way to control the bandwidth used by exchange? or is there any live logs that i can review?

Thanks.
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If you need additional info please let me know. Thanks for taking a look at our post.

The problem slow SMB over WAN. Latency avg 27ms  Wiresharks shows the Windows Size is small 8012 for SMB traffic.  Bandwidth 100 MBPS both up and down.  Speed out to the Internet is great both up and down.

Site to Site VPN setup between two Fortigates.  

Copying and opening files between the two sites is slow.  Branch Office has a mix of Win7 and Win10 on the Desktops.  Fileserver is running Win2016.  I have three remote sites with the same problem.  Wireshark tells us we're running SMB 2.0.  

I'm asking for suggestions to increase the file transfer speed over the WAN.  

Fortinet's TAC Level 3 has checked and double checked the Fortigates for misconfiguration errors.  
We have  done things like reduce the MTU size on the Fortigates.  Ran continuous pings on both the private and public interfaces looking for dropped packets.
Checked for mismatched duplexing.  Updated the Fortigates Firmware, Attached laptops directly to the Fortigates and copied files between them, ran Iperf both TCP and UDP between them, etc, etc.

We've read document after document on slow SMB over WAN.  Performance tuning for SMB. - https://www.apachelounge.com/download/contr/Perf-tun-srv-2016.pdf
We've added the registry key for SizReqBuf, and set it to ffff.
Windows Size Scaling is mentioned.
https://www.auvik.com/franklymsp/blog/tcp-window-size/?  This link mentions Windows Scaling is enabled by …
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A client of mine has this issue when attempting to open up QB on the work station, QB Sees the file on the server but then pops up a message saying that it cannot communicate with it. I have uploaded a picture of the error.  I tried to find the connection diagnostic tool that it is talking about, but it seems to be hidden. The instructions always says to download it from the "OEM" website, where ever that is.  I couldn't seem to find it.  
But for some reason QB sees the files on the server, but cannot access them.  a little help would be appreciated.
20191007_125944.jpg
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We manage a law firm's computer network.  The server operating system is Windows Server Essentials 2012 R2.  We installed the new network in 2015, and overall it has worked very well.

One of the senior partners at the firm lives a long distance from the office.  As a result, he relies on the Remote Web Access (Anywhere Access) to work remotely.  His desktop computer has Windows 10 and he uses Google Chrome as his primary web browser.

Until recently, the RWA system has worked very well for him.  Recently, though, he has been unable to connect to Remote Web Access.  Instead his attempt to do through with Chrome results in a timeout error and failure.  Please note that he has used Chrome for this function since 2015 and it has worked consistently and reliably.  Also, he is able to connect to many other web address without problem.

We tested connecting to their Remote Web Access system from our office, using various browsers, computer and operating systems (Windows 10 and 7) and in every case we have connected easily to RWA.  The only time we experienced the timeout error with Chrome was when we incorrectly typed the RWA address.  Once that was fixed, everything worked perfectly.

Given this background and recent problem, does anyone have any ideas how we can fix this?  Thanks very much for your help.
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We have a Windows 2012 Essentials Network, and for some reason we can not run an Time Clock Plus 7.0 install on any Server or Computer, it is being blocked at the point of clicking on the .exe
Does anyone know what process is needed to eliminate this and allow the .exe to run on the network, via Servers or Windows 10 PC?
Every Time we double click on the .exe file we get this alert:

" Error opening installation log files. Verify that the log file location exists and that you can write to it."
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I have Cisco SPA303 IP phones that I am trying to get connected to a cloud provider. I can only connect to the cloud provider when I connect the phone to my laptop and use network sharing.

If I try to connect thru the local network  the phone boot up stalls and gives a message "checking DNS".

What doI need to configure on the router to get the phones to work?
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Hi, I am using VMware cluster (ESXi 6.0).
I just created a VM and I noticed that Network adapter option is greyed out.
I created ANOTHER VM, and I got same results.
"Connect on power on" icon seems normal,  but "connected" is not.
Any suggestion?
I am using DVS (distributed virtual switch)
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hi Expert,

At first i couldnt access OWA via external network, and i found out my ssl cert has revocation failed error. so i went and enabled netsh winhttp command to configure exchange to follow proxy setting in my IE browser. after completed the step, my ssl was valid and error is gone.

And then my network teams informed me that he has opened 443 port in firewall, once he enabled i'm able to land on OWA pages using external network.

the problem is i cant login using my domain\username, it keep said the user name or password is incorrect. tried admin id is the same as well.

Checked in event log, there lot of MSEXchange ADAccess error event ID 2937 and 4127.

any advise?

Thanks.
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I have a Windows 2019 file server (not AD joined) in a DMZ with SMB (IP port 445) opened for file share access from an internal Active Directory based network. I'm looking for a method to authenticate to the file share and to manage access to the share for users.
0

Networking

95K

Solutions

68K

Contributors

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.