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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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My networking skills are limited and I am presented with a problem.  I need to get a 10. subnet to talk to a 192. subnet.  What do I need to do/configure, and is it possible?
Microsoft Certification Exam 74-409
Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

We have a corporate wide area network. The main site is using tmg 2010, and uses Also we have two more site connected to the main site via a vpn tunnel provided by the ISP. The external sites are and

Traffic between the nodes worked just fine until we implemented the tmg 2010 at the main site. We connect to the ISP via a public IP. Also the ISP provides the traffic coming from the other sites, but we have not been able yet to configure the tmg properly  to allow the incoming traffic from those external sites.

Any suggestions?

Here is the network topology.

Hi All,

We're a care company with a standard file server with X amount of mapped drives per department (and a shared 'Z' drive).

We are wanting to migrate over to O365 and I've had conflicting advice on weather to move to Onedrive for Business or Sharepoint.

My first question would be which one would you guys recommend ? And are there any reasonably priced tools to assist.

The ultimate goal as our users are not technically minded would be the ability to re-map the network drives to the new Sharepoint / Onedrive for each of the 'drives' so the end users doesn't really notice too much difference.

I know there are companies out there who charge thousands to manage the process but having done the migration thus far from Exchange / AD to O365 I'd like to tackle this myself.

Many thanks,
Shaun Okeefe
I have a Windows Server 2008 r2 machine on DMZ. We have a shared folder on there that one day a couple weeks ago was no longer able to be accessed. No changes occurred except for maybe windows updates. I am having an issue trying to map the shared drive on the dmz server from any internal lan machine.

Steps I have tried so far:
1. Completely turned off firewall
2. Made sure all services that pertain to print and file sharing are on turned on and running.
3. Ensured that the checkbox for File and Printer Sharing for Microsoft Networks is checked.
4. Turned on File and Printer sharing, network discovery, and public sharing folder in Advanced sharing settings.
5. Tried uninstalling File and Printer sharing driver and reinstalled.
6. Verified that some local security policy were turned on to make sure to allow file and printer sharing.
7. Ran packet traces on Cisco ASA firewall with Cisco tech support but they are claiming that the packets are being allowed through without issue. They're saying that the smb ports (445, 137-139) on the dmz server are not responding once the packets get into the dmz server.
8. Went through registry and made sure everything for SMB1 and SMB2 were turned on.

I am able to remote the DMZ server and ping it from any LAN machine but not able to map the shared drive. I am at a loss and have been pulling my hair out. If anyone could lend a hand and assist with this or lend some recommendations to me, that would be awesome and very …
I noticed that in some captive portal, after joining wireless network, browser opens automatically and shows login page.
Is there any standard configuration to obtain this behavior?
thank you
This is a New sbs 2011 Install.
I have two separate networks at my home Business. Im testing remote login to the Business Network that the server is on so my wife can connect to the server from the internet.
  Im trying to get Remote Login to SBS2011 working . I ran the wizard to setup server for remote access.
 I can not ping the server name or IP. I can Ping other devices Router and workstations from the other network and that is fine. I disabled windows firewall and enabled firewall on the router I Enabled upnp set up fowarding port 443
 I can access the Internet from the server.
when I ping the Server I get  Destination Host IS Unreachable
I dont know what to try next
Dear experts

My situation is quite complicated.
Generally, I m creating an VPN server.
For different client connect to the VPN Server from different country, I would like to provide different dhcp-range.

I understand that dnsmasq support multiple network.
My question is how I can use the tag indicator and the client will collect the correct dhcp-range in the VPN connection situation.

# Address range for country1 clients
dhcp-range=tag:country1,,,255.255. 255.0,1h

# Address range for country2 clients
dhcp-range=tag:country2,,,255.2 55.255.0,1h

# DHCP options given to known clients

# Subnet mask
# Default gateway
# DNS server
# Broadcast address
This is using a Netgear Prosaft M4100-50G L2 switch. There are 2 VLANs on this switch, namely, vlan 10 besides 1. Ports 12, 21-35, 38-40, and 44 are on vlan 10. The rest is vlan 1. This switch is located in our remote office. There are 2 uplinks connected to this switch from our hq. The first uplink, connected to port 43, is basically uplink for vlan 1; second uplink, connected to port 24, is means for vlan 10. This logical segregation works perfectly, any port either belong to vlan 1 or 10, can grab the IP from respective dhcp servers located in hq.

2 week ago, thing changed. Users using vlan 1 ports found that they no more able to grab the IP. Their port looks like is entirely "isolated". After much checking, we were having a "workaround", that is, get in an additional 8-port switch, move the first uplink, and connect it to this 8-port switch. After that, get an additional short network cable, with one end connect to 8-port switch, and the other end to any vlan 1 port of this netgear switch. The vlan 1 operations are back to normal.

Just wondering why? How to get the netgear switch to work alone without this workaround?
Please see the netgear config as attached.

Thanks in advance.
I have a whitelist like this...

*, *, *, *, *, *, *

The way I have my web filter set up I can't whitelist by stars.... Is there a way I can perform a dns request that would find out what all subdomains are currently defined for *  If I can do that I could write something that would do that every 5 minutes and update my hardcoded white list.  

is this possible?  thanks!
I'm trying to add a server (Server B) as a child domain to an existing forest.  The server was originally setup as a domain controller to replace the on prem domain controller, but was later decided to make is a child of the forest since the NAS on site can communicate with multiple domains of the same forest. I have removed the ADDS role and demoted the server. The old domain controller has a functional level of Windows Server 2012 R2 and the domain is called This server was originally setup on a network. IT Management has setup the new server (Server B) on a network and want to make it a child so that it's domain would be Management has also added a 10.10.16.x IP address on XYZ. On XYZ, I have setup a new site in AD Sites and Services with the 10 subnet and have renamed the original Site for clarity and have set it up with it's 192 subnet. Both servers are manually configured with IP/Subnet Mask/Default Gateway/DNS. Both servers have 2 IPs, one on the 10 network and one on the 192 network. From Server B, I can ping by IP but not by name. When I try by name, the replys come from the hosted website. Each network has it's own default gateway. I then go to server B and add the AD DS role and then proceed to Promote the server. I choose the option to "Add a new domain to an existing forest". The "Select domain type" is set to Child Domain. I click on the Select button next to parent domain name where it asks me for …
Flexible connectivity for any environment
Flexible connectivity for any environment

The KE6900 series can extend and deploy computers with high definition displays across multiple stations in a variety of applications that suit any environment. Expand computer use to stations across multiple rooms with dynamic access.

Hello experts,

I was manually pasting /over writing a new .dll for an application fix. I was mapping to the C$ drive of the workstations and pasting on the application folder in the program files a .dll fix.  Some workstations I had to stop the process in order to be able to overwrite it.

I will like to perhaps use active directory to do it.

The network is a windows network. What needs to be done is replace a dll file in all the workstation.

Thank you in advance for your help on this
All, I have a user that continues to complain that they become disconnected from a remote "Terminal Server".  I have multiple users, even from the same network, that are connecting to and using the server daily without disconnect issues.  The user (All users), connect to the RDS through an IP-Sec VPN. I am stumped as to what may be the casue or where I could look?

I have already replaced/tested cabling to the users PC. The cable tested clean.
I have reviewed logs on both the PC, and the server and no errors.
I have verified connectivity from firewall and up time, no issues.
I've eliminated the possibility that there is interference on the network somehow, possibly from a rogue device or second DHCP server.
I've had the user connect through a second account to the server to eliminate possible profile corruption.

I am truly at a loss here and would like some guidance.
I have a problem with my computer. I have Windows 7 ultimate and about two weeks ago after I updated my avast(tm) antivirus, my computer crashed on start-up. So I booted it in safe mode and through msconfig.exe I was able to isolate the problem and turn it off. Now however, I can't connect to the internet and everything I have tried so far to fix it has been proving fruitless. I have an idea on what to do but I can't seem to find the file I need. It seems I need an EAP.txt file, but I can't find it online. IF someone knows where to get it can you link it and walk me through how to replace it with my old one? I'm moving soon so I need this done ASAP
I currently have the requirement to load balance in an active active state 2 separate Datacentres, both with ADFS installed, this needs to be accessible externally and needs to be Highly available. The 2 sites are on different ISP's.

I am thinking about using an Azure Traffic Manager Profile and was wondering if anyone could provide their feedback on the idea and also if people could provide alternatives,

Thanks in advanced

A company i do a bit of work for from time to time, mostly laptops & desktops, have asked me to look at their SBS2011 as everything is running really slow all of a sudden.
When i went in i noticed their updates were failing, their backup stopped last week & a couple of critical errors in event viewer.
Could these critical errors be causing this?

Event ID 3355 Sharpoint Foundation

Cannot connect to SQL Server. SBS-SERVER2011\SHAREPOINT not found. Additional error information from SQL Server is included below.

Timeout expired.  The timeout period elapsed prior to completion of the operation or the server is not responding.

Event ID 3355 Sharpoint Foundation

Cannot connect to SQL Server. SBS-SERVER2011\SHAREPOINT not found. Additional error information from SQL Server is included below.

Connection Timeout Expired.  The timeout period elapsed while attempting to consume the pre-login handshake acknowledgement.  This could be because the pre-login handshake failed or the server was unable to respond back in time.  The duration spent while attempting to connect to this server was - [Pre-Login] initialization=96156; handshake=44266;

Event ID 6398 Sharpoint Foundation

The Execute method of job definition Microsoft.SharePoint.Administration.SPConfigurationRefreshJobDefinition (ID 3f51cf65-da4e-4ddf-82ee-ac2b29b6b3fc) threw an exception. More information is included below.

A connection was successfully established with the server, but then an error …
I need to disable VMQ

I am using command

Set-VMNetworkAdapter –ManagementOS -Name <VirtualNetworkAdapterName> -VmqWeight 0

how do I get the VirtualNetworkAdapterName
hi all ,

we have the below error from the SCCM 2012 :

distribution manager failed to connect to the distribution point mswnet sccm 2012

we are using now discovery by network only and machine being discovered but the number being discovered increase very slowly i.e. every day approximately machine being discovered is 3-5 .

any idea why this error show ?

any how to speed up the discovery method ?

thanks all
Hi, I recently switched to W-10 and used ethernet connection to modem/router. I was surprised not having to provide a ssid and passcode to connect, and wary as I am seeing my status as  logged on to a 'local network', (my modem/router).  My question is, am I better protected using the wired connection, or should I unplug and connect thru wifi?
Hello Experts,
This customer of ours has a LAN with three mac OSX Yosemite,
procesor Intel 2.7 Ghz Core I5
8 Gb Ram 1600 Mhz DDR3

Inside each mac there is parallels with WIN 10 and our APP
Now our app works with MYSQL  and visual c# ,,,,
one of the MAC works as a server and the other two are stations consulting/updating the server,

All three macs are wireless and too slow
is it true.... if I switch to network cable instead of wifi,
 it may be faster at least something faster that we can notice ?

And what can I do to make these mac faster..
clearly they have not had any proper maintenance before...

but also is parallels also making it even much more slower??
not win 10 inside parallels shows a network speed of 1 GB is this reliable ?
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Hi all,

I have 2 servers that have multiple NICs. 2 of the NICs have been connected directly with one-another and the others plug into switches.  i mapped a shared drive using the IP address of the directly connected NICs. When i copy files from one server to the other using this mapped drive windows seems to be using all the NIC's to transfer the files and not the NIC and IP address that was used to map the drive. Normally this would not be a problem, however as i am transferring over 2TB of data, my network is being slowed down because the data and sent over the switches as well and not just over the directly connected NICs. Is there a way to force server to only use the mapped link? I specifically used the IP address and not the machine name to try and prevent the use of multiple NICs.

All help would be appreciated.

Hi All,
I am working in SharePoint 2013 server. I have an .xlsm file that is filled out as a work request and submitted to the SharePoint site. The Excel file is then reviewed and eventually approved through the Item Approval process. I am looking for a way to use a workflow that once the file is approved that the file is removed from the SharePoint site and archived in my network folder //borg/usershar/MCL/datasources/XH-707/
The excel files are up to 6 MB in size so I do not want to consume the SharePoint site capacity and store offline from that server.
The second part to my question, is there a way to generate a pdf automatically through a workflow once the Excel file is Approved? If this is possible, I could maintain the pdf and delete the excel file after approval. Thanks for any help.

I'm getting the message listed in the title when trying to access a DFS share from a new subnet we created which happens to be a different subnet the one the nearest DFS server is.

So, the workstation on Subnet B is trying to access the DFS server on Subnet A.  Subnet B is a new subnet we just created.  Networking and DNS seem to be working fine to Subnet B and the workstation can access the DFS server by name using \\Servername with no issues.  It's only when using \\DFSsharedomain the issue occurs.  

I've set up a reverse DNS zone for the new subnet, ensured the workstation on the new subnet is listed in DNS and that servers and workstations can access the workstation on Subnet B both by IP and by host name.

I'm not sure what DFS needs for the workstation to access it which is what I'm stumped on.   Because the workstation is on a subnet without a DFS server and has to travel across subnets, it's not associated with a "site" and therefore all the DFS servers are showing up as referral targets whereas other workstations in the overall network only get referrals from DFS servers in their "site".  I wonder if this is the issue?

 Can any one assist?

Thank you!
i have 1 default lan and 3 vlans.
setup on our watchgaurd firewall
vlan10 ip address dhcp relay to the dns server
vlan 20 ip address dhcp relay to the dns server
vlan 30 ip address dhcp relay to the dns server

On the dns server i have the 3 vlans with thier own scope and in thier scope options i have the router set to
vlan 10
vlan 20
vlan 30
in the dns server routing and remote access i have the ipv4 dhcp relay agent set to,,,

all of our switches have the vlans setup also
any time i connect a pc to a switch that has its port set to any of the vlans it gives a bad ip address, 169....
anything on our defualt lan works

for a while i was getting this error on our dns server event viewer.
IPBOOTP was unable to receive an incoming message on the local interface with IP address The data is the error code.

i restarted and also deleted and created the routing and remote acces dhcp relay agent
I dont get that error code any longer but the vlans still dont work
We currently have our DAG setup with 2 exch 2013 servers. Right now if the dbs flips over to the passive node, we have our network guys make the switches on the routers so that it now points to the passive server instead of the one that was active, because there is only 1 outside IP address.
Now we are going to add another external IP address so that in the event the dbs ever fails over to the other server, we don't have to have the network team make any changes. They are going to set this up with the second external IP address..
My questions is, do I have to make any changes in the external dns for this to work or with the internal dns?
I am trying to push out a batch file shortcut that is located on a network share.
I am referencing the batch file via a UNC path. Affected users have access to this path.
However I am having issues seeing this GPO apply to work stations on my network.
Any suggestions?
Here are a couple screen shots of my GPO.

 1 2





Articles & Videos



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.