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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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Fix RPC Server is unavailable Error in Exchange 2013, 2010, 2007, and 2003 Server. Different reason can such as network connectivity issue, name resolution issue, firewall, registry corruption that lead to RPC Server Unavailable error.
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what is the best server equipped to host a full fledged teenpatti game with unlimited userbase.
please advice with configs. I am new to this
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Hi Support

How to export the existing email to a pst file by powershell scripting.
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Hi Expert

How to archive the existing email to the new mailbox by powershell scripting?

thanks
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I always get confused / use firewall / router rules so infrequently that I don't know  what the right way to set these things up.

Can you help?

I have a VOIP service using a Grandstream HT-502 V1.2A gadget.  The call quality isn't always good.  That device is plugged directly into one of the ports on an actiontec router (left over from when we had verizon fios, but now we have cable internet 15down / 5 up speed.

I have lots of other devices plugged into a gig network switch in the basement that might be using the internet at the same time as the calls?  That gig network switch has 1 cable going over to the actiontec also (so there's only 2 cables on the lan side of the router).

To improve call quality, that's a job for QoS, right?

The attached picture is what I did in the actiontec router.  The grandstream has the ip of 192.168.1.52

But then i thought, should this be on the Ethernet/Coax or  Broadband Connection (Ethernet/Coax) sections? Did I at least get outbound rather than inbound correct?

But that just gets the call out of the house with highest priority.  Once it's on the web, it's fighting with all kinds of data / can't prioritize it, right?

Does the VOIP provider have any bearing on the quality of the calls? Iwe are using VOIPO.com).  is there  a way to substantiate / test where the poor qiuality - dropped fractions of a second in the conversation, etc.  NO stuttering, max headroom type things.  Just a m ssing sound here and there.

And most …
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We're having a problem with resolving a name to an address with a Linux apps.  We have an activity where we're moving images from one company network to another.  We have been trying to ensure all references to domain names have been changed, but we're still getting an error and so we're thinking we've missed one (or more).  Is there something that can trap attempts to resolve a name to an address we can turn on or check (either on our server or the network)?  I'm not even sure if a sniffer might help, but we're looking for any ideas that people may have.
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Is BPDUGUARD enough to avoid ROOTGUARD ?

I have read in some articles where they stated that ROOTGUARD should be configured on the Core switches interfaces facing Distributed Switches and also configured on the Distributed Switches Interfaces facing Access Switches, this in order to prevent Bad Guy from connecting a new Switch configured with Lower Priority than existing switches or configured with Root Primary command then connected to Access Switches.

I thought when configuring BPDUGUARD on Access Switches will be enough, because no other Switch can be connected to Access Switches, and when connected the port will go in Shutdown (err-disabled)

Any clarification will be appreciated.

Thanks
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2nd home wireless computer is connected to Sonicwall SOHO wireless -n, but has no internet
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General concept of openVPN solution for private network. I'm thinking about layer2 bridging mode but... I have one VPS server with Ubuntu 16.04LTS, one local network and two mobile pcs. Starting from server - there is one Ethernet controller with public static IP address. I want to connect to them from 3 places. Should I create 3 TAP interfaces? What about the bridge - bridging eth with TAP(s) or only TAPs from network for example 192.168.2.0/24. Next computer is PC in local network also with one Ethernet controller with address from network 192.168.2.0/24 and Gateway 192.168.2.1. Additionaly two laptops with two network cards, one used for internet access with local address from network 192.168.2.0/24. Have I config TAP and bridge with network card unused or used to connect to internet (WLAN + home WiFi router). I would like to see every computer like in local network, use configured in local network DHCP, DNS (not obliogatory - can be static), used sharing folders, printers, active directory, connect to domain, use DFS. When I trying TUN IP packet routing i probably had wrong configuration but forcing DNS from VPN was disconnecting me from DFS service.
Any help please - routing or bridging and config of TUN/TAPs interfaces with ethernets and Bridges.

Thank You

Paweł
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I'm sure this is simple, but I can't remember and I don't have time to figure it out, so...

I have a Windows 10 "All In One" lenovo computer.

The PC needs to connect to a small personal NAS via Ethernet, AND, the only way it can get Internet is Via Wireless.

The PC has both wireless and Standard RJ45...

I just can't remember how to do both at the same time.

Or, am I over thinking things: Just set a common IP for the RJ45 and the NAS , and then connect the wireless and I'm done...

Just not sure, and when I get there to set it up, it'll be too late to figure it out.

Thanks!
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Hello all,

I know that some of you have probably had this issue to deal with so here's my question.

 Our cable internet connection was not giving us the speed we should have. I've gotten the tech here and as usual when they come and check they usually remove the router off of the network and connect directly to their cable modem and run the speed tests and get the correct speed.
I then replaced out router and switch to address the issue since he said it had to be one of my devices and am still having the same problem but again the tech came and removed my hardware and connected directly to the modem and got the correct speeds.

How can I prove that the issue is not my hardware and is definitely on their end are there any network tools or any device that I can run tests on that will definitely call them on their "Bull"?
There has to be a way for me to definitively prove that it's not my hardware especially knowing it's all new on my end.

Thank you in advance for your help, it's much appreciated!
Seb
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I have done this before, but I cannot find my mistake in the configuration.

I am trying to have a printer on the Internal LAN of our network setup so that those workstations on a DMZ LAN can print to it.  That is all I want them to have access to.

I tried the configuration below, but it is not working.  What am I not seeing or missing?

Thank you in advance.
Jeff



interface GigabitEthernet0/1.10
 description Workforce Development Training Rooms
 vlan 10
 nameif GK-WFD
 security-level 50
 ip address 10.0.21.10 255.255.255.0
!
interface GigabitEthernet0/1.21
 description VLAN subinterface for RO Office
 vlan 21
 nameif GK-Systems
 security-level 100
 ip address 172.21.1.10 255.255.0.0



object network GK-CPY-RO-2
 host 172.21.21.6
 description This is the Ricoh Copier on the 3rd floor of the Regional Office
object network GK-CPY-RO-2-DMZ
 host 10.0.21.33
 description This is the DMZ PAT IP address for the Training room to print to Ricoh on 3rd Floor


access-list GKY-WFD-PRINTING extended permit ip object GKY-CPY-LOURO-2 object GKY-CPY-LOURO-2-DMZ

object network GKY-CPY-RO-2
 nat (GK-Systems,GK-WFD) static GKY-CPY-RO-2-DMZ
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Documenting VMware Network documentation. Have a lot of the other requirements completed

Is there a powercli script that will show networks for vSphere mgmt VM connectivity, vMotion traffic and best way to document network

I have one vDS and 20 odd vSwitches, I want to have a comprehenisve network report, security, traffic shaping load balancing etc

Using this at the moment

https://www.vmadmin.co.uk/resources/48-vspherepowercli/251-powerclinetworkoutputcsv

Thanks in advance
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I am thinking of purchasing a Windows server (2016 Essentials) for our small office. Among other things, it would serve as a central file repository, accessible to PC users in the LAN, as well as outside PC users that VPN into the office network.

The files would be in username/password-protected folders. To further protect data in case of physical theft of the server (somewhat unlikely but just in case….), I would like to encrypt the server using Bitlocker.

Given the above, is it possible to set up things so that VPN users (using Windows 10 Pro PCs) can access the encrypted drive and protected folders without having to type in encryption key, and folder username / password every time ?

I’d appreciate comments from anyone who has experience of this.

Thanks in advance !
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Help Request:
Cannot connect to remote desktop.  Get an error that the server is 1 off, does not allow conections, or is not on network.  All untrue.  I can ping it and am actually working on it remotely using team viewer.  I have always been able to RDP in successfully, however, with no known reason, it seems to have stopped.  I confirmed listening port is 3389 in registry and also confirmed that no other program is using by issuing netstat command.  Restarted the RDP Services as well.  Turned off firewall and antivirus.
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Good Afternoon, I have a quick question about VLans and more or less just want to verify my train of thought is accurate if possible.

We have a Barco (Click Share) device that I am about to setup in our conference room. The device is used to stream videos/content from a laptop over to a projector. I don't particularly want that type of traffic also flowing through our LAN, so I am planning on putting it on its on VLAN (We will call it VLAN 15 for this purpose). The laptops will also need to be able to access the servers on our local network (We will call it VLAN14) to retrieve files that they can pull up to then be displayed on the Projector through the Barco Device.

What I am thinking is the Barco Device will be on VLAN 15 as well as the Laptop which then connects back to the wall, to the server room, and into our Layer 3 switch.

My thought is that the Video Streaming would stay on VLAN15, but when the Laptops request files back on our local network VLAN14 they will be able to also get there as well. This of course is provided I create a route for them to be able to get from VLAN 15 to 14.

My question is would the Video traffic between the laptop and Barco device stay on VLAN15 and then only the traffic from the Laptop (Request for local files), be sent over VLAN 14?

What I don't want to happen is the Video traffic coming back from VLAN 15 to 14 as that would be bad, but also defeat the whole purpose of the VLAN. You mind as well plug everything into …
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We are getting a yellow exclamation mark on our network icon and MS Office 365 says we aren't connected to the internet but we do get internet without any problems. We have tried the disabling of IPv4 TCP and UDP offloading with no joy. We have tried manually entering an outside DNS, no joy.
I am not sure what this is actually looking for. Some of the machines on the network show this and some don't. All machines are clones of each other.
Any ideas?
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Please can anyone help
We moved office and installed our wireless router and a wireless access point.
The internet and wired network are working perfectly.
However if we try and connect wirelessly to the router or the access point we can connect but both say "no internet"
If I reboot the router we may get wireless internet for about one or two minutes before it goes back to saying "no internet"

Help please
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We recently set up a new time management system on a dedicated virtual machine.
OS: Windows Server 2016 Standard

In order to access its main internal website I need to use http://servername-server or server's IP address.
How do I change this name to be http://timemanagement.mydomain.com?

What type of a DNS entry do I need to add (under my mydomain.com forward lookup zone?) to make it work?
Thanks, your help is much appreciated.
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I did a speed test from several speed test sites for my 1 gig Internet circuit and my download and upload are so different. The upload seems fine but the download is so off. It never passes 250Mbps. I have another 300 Mbps with another ISP and when I tested it with the speedtest sites, the download and upload are almost the same, around 250Mbps.
The tech was onsite and tested with his test set and he said that he gets around 900Mbps upload and download.
How do I explain this? Can I trust the 1G circuit provider? What is the explanation for the speedtest sites reported big differences between download and upload.

Any thoughts? Thanks
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I  am in to the learning process of SCCM  because we are planning to have it in to our  envirnment. I need a network diagram on how SCCM will communicate with clients (ports required for client deployment, ports required for client check ins, ports required for package deployments, etc.Which will discribe us full functionalitry of the products.
Is there any guid line avaialbe
Thanks
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Why can't I see mapped drives when I am searching for a destination location for a backup program I am using?  I use a free file backup program called AOMEI Backupper and I want to backup the DOCUMENTS folder to a mapped drive folder on the network.  When I click on THIS PC I do not see the mapped drives as I do when I click right into THIS PC.  See screenshots.
Screen-Shot-2018-04-19-at-9.55.08-AM.png
Screen-Shot-2018-04-19-at-9.54.48-AM.png
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I have 2 pc's with Cisco AnyConnect Secure Mobility Client (V 4.5.00058) on W10. My regular work PC has been set up using this for 1+ years. Two days ago, when I would connect, I lost DNS resolution. That is, if AnyConnect was running I could not get to internet sites (via name) nor could I map network drives. I installed it on another laptop and it works correctly. I have ouput from ipconfig /all, netsh interface ip show config and netsh -c interface dump. When I compare, I don't know if any of the differences are revealing the problem, since I don't know beans about networking.
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We have ( 2 )   Cisco SG-300 switches and we have created Vlan ( Vlan ID - 5 ) without trunk port. Both switches are on different location. We connect them both on Vlan port.  

And now devices which are connected on that switches can communicate individually. but That switches are unable to communicate.
Vlan-problem.jpg
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How to make  Powershell  a permanent
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Networking

92K

Solutions

67K

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.