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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“The 802.11s amendment proposes the use of a protocol for adaptive, autoconfiguring systems that support broadcast, multicast, and unicast traffic over a multihop mesh WDS.”

From: “CWNA Certified Wireless Network Administrator Official Deluxe Study Guide: Exam CWNA-106
by David A. Westcott; David D. Coleman”

I figure that different vendors may use different protocols, so what are some examples of protocols used by vendors like Cisco  when defining the above sentence?

Possible answer:https://www.cwnp.com/uploads/802-11s_mesh_networking_v1-0.pdf
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What are streams in wireless networking?
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Environment = Vcenter Version 6.7.0.20000 Build 10244845
ESXi host version = 6.7 U1 11675023


We are trying to add a Host to a new cluster that was just created.
We are going through the process and the Host is on the network, it tests successfully in the ESXi console.  WE can ping the IP and the gateway and dns.


Here is the Issue:
When we go through the wizard to add a new host to this cluster we get the certificate warning, and select "Yes" and go through and select a license and finish.  The task gets to 100% and then fails with the following error:

Cant add Host to Cluster - A general system error occurred: Unable to get signed certificate forhost name 'ESXi1.mydomain.com' ip 'xx.xx.xx': Error: Failed to connect to the remote host, reason = rpc_s_no_memory (0x16c9a012). (382312466)

Never seen this before, any ideas?
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Just install Windows 2016 Standard at my site.    10.100.5.12     255.255.255.0      GW 10.100.5.5    DNS       Already at the site is another server 10.100.5.11  same subnet mask  same GW and same DNS.      
From the new server I can ping the IP address of the older server- 10.100.5.11 and I get normal responses for IPv4 but when I ping the by computer name I get IPv6 responses. Don't understand that.    

Pinging from the old server by ip address yields the same successful IPv4 responses   and when I ping by name successfully IPv6 responses.      

The real problem is that remote sites cannot ping the new server by ip address and name and can ping the old one (2008r2) by name or IP address

Did I set something up wrong on the 2016 server to cause this problem?
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What is the correlation between virtual Nics and physicial nics?  I have  the following:
wrmnic0 - 10 gig fibre
wrmnic1 - 10 gig fibre both connected to my NAS
then
wrmnic 3,5,6 & 7 all connected on a VMswitch 2
wrmnic2 connected on vmswitch 1

I'm trying to add 2 more servers on the same vlan however, I don't have any more nic cards.  I have 4 ports on a seperate nic on the hardware but it's just not showing up.  
On my vmswitch2 I created VP port group and the server is up and running - but is the correct?  Will the traffic get slowed down.  I'm enclosing a screenshot
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Hello,
I need a .bat script to restart the network adapters.
It's for a standard user without administrator permissions and would need the way to enter credentials without the user being able to seeit.
Thanks,
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I already deployed two Windows Server 2016 "DNS Servers" a few months ago that are working fine, with DHCP IPs getting processed correctly, therefore I turned off my two old Windows Server 2008 "DNS Servers", with everything continuing to work correctly.

I have some REALLY old printers, etc that are almost never turned on, but I turned them on a few days ago, seeing that they still have the OLD static DNS Servers listed.

I can easily change the static DNS Servers, but wanted to see if I could create some type of pointer record, doing something like the below

 1. printer has old DNS Server 192.168.24.1 listed
 2. since this old DNS Server 192.168.24.1 no longer exists some type of POINTER record automatically forwards this DNS Server request to the new 192.168.24.2 that is on the same subnet/etc

Any ideas on how to setup the above POINTER on my Windows Server 2016 "DNS Servers" ?
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I have a conduit that needs to have a network cable run through it.  The length is 450 feet.  Is this too long for a CAT 5 of CAT 6 cable?  Any ideas on what I could do to make this scenario work?  I'm sure fiber would work but we are trying to do this ourselves and not have a telcom company do the work.
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Hi there all,
well my problem is that i have a small workgroup with a server. They are not in any domanin just same workgroup. The server is running standard edition 2016 and the computers are running windows 10 enterprise. I configured the server as a file server and then i shared a couple of folders. now here comes the issue. some forlders i want only one or two persons to acess but when i map the network folders to the workstation. every time i want to map another folder with a specific user diffrent that the first time i get connection error. i tried to looka rround and tried many pssible sollutions but none work. i tried to use net use in a cmd like this but like i said only one connection to the server is accepted at any time. please help :-)

net use o: \\10.0.0.10\user1  /user:SERVER\user1 user1123
net use p: \\10.0.0.10\user2  /user:SERVER\user2 user2123
net use q: \\10.0.0.10\user3  /user:SERVER\user3 user3123

Many thanks
Marc
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Sonicwall routing with multiple VPN's.  I currently have one network as my central point (Site A).  There are about 5 other networks (Site 1 - 5) with VPN tunnels to my central network (Hub & Spoke).  On the central Sonicwall is it possible to route traffic from Site 1 to Site 2 through Site A.  I am looking into Routes and Rules from VPN to VPN but not sure how to exactly accomplish this.
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My router shows my actual data rate is about half of the attainable rate. Is that poor enough that I should call the company? This is upstream, downstream's better:

Capture.JPG
Seems like it should be faster to me. This is with neither of us downloading or streaming. Thanks in advance for the advice.
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Hi,

 I am about to replace existing server with new server using newer server operating system and like to know if you would create a new local domain name in the new server or use existing domain name.
 For example, existing domain name is called "Hersheychocolate.local". Would you create a new domain name "Hershey.local" in the new server or keep the existing one?
 Is there an advantage of using existing domain name in the new server with respect to user file goes?
 Typically, before I replace the server, I dis-join the workstation PC, set up new server on the same network and join workstation PCs to the new domain name. Consequently a new user profile is created in C:\Users and I have to move files from "My Documents, Downloads, Favorites, Pictures, Videos" folders from old profile to new profile.
  What are the pros and cons?

Thanks.
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how to change object ip in cisco asm.
i have an object (server) with ip 10.10.10.10 , i have to change (edit) this to 10.10.10.11
is it enough to just edit server ip or  i need to change nat rule and extern ip too?
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Some machines on my network are blocked from accessing the internet. Recently we bought an application that does not working without internet connection, so we decided to allow access only to those addresses needed to that application.

Is any way to discover which addresses trying to communicate this application by using tcpdump?
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Understanding IP OSPF Network Types.

On the screenshot below, it shows a table of IP OSPF Network Types.
Regardless of how neighbors are discovered, if DR/BDR are elected,etc...
I would like to know in which scenario should I use one type and not the other.

Thank you

ospf
1
hello
which is the best to host vhd files on datastorage
sas or 10gcoper or 10gfiber?
thanks
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Background:
1.   Restaurant environment.
2.   Two desktop “terminals” Microsoft Windows 7 Embedded, 64-bit Service Pack 1 (build 7601)
3.   Cox business Router Switch is the “Technicolor-cga4131” both Terminals directly wired to the Router Switch.
4.   Bitdefender MAV.
5.   All Patches current.
6.   Terminal 1 – (for my purposes) static IP set on the local adapter.
          6.a. Terminal 1 hosts the POS software DB.
7.   Terminal 2 – Dynamic IP, needs to connect the POS DB on Terminal 1.
8.   Both Terminals local adapters DNS set to 8.8.8.8 and 8.8.4.4
9.   IPV6 disabled on both terminals
10. On each Terminal there are 2 administrative profiles, 1 password required, which then automatically launches the point of sale software. The other profile no-password required, and no access to the point of sale software.

FYI - I did pick up some batteries as a just-in-case “it’s the CMOS batteries.” Yet to be installed. I'll be dropping those in today within the next hour or two.

Problem:
After a each reboot the “Set Network Location” widow pops up. EACH TIME!
This causes a break on Terminal 2 being able to automatically connect to Terminal 1's DB, as the Network setup has to be performed. Afterwhich Terminal 2 requires the use of Microsoft SQL Server Manager to properly connect to Terminal 1 where the Point of Sale software's hosted DB is located.

Guru’s watcha got for me?

Respectfully,
Vincent Mills.
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Our firm has between 5-10 offices globally, all connected via IPSEC VPNs. Each office has its respective Azure VNET, also via IPSEC VPN.

At this time, any traffic headed to an Azure VNET will be directed to the on prem firewall before getting forwarded to that site's Azure VNET. We would like to utilize Azure's backend connectivity to increase the performance of our connections. According to Microsoft engineers, this will not be possible with Azure's Global VNET Peering feature, which does not allow traffic to be directed back / learn the opposite routes. They claim VNETs need site to site VPN connections between each other, each with its exclusive Local Network Gateway.

Is Microsoft's recommendation the best way to go about solving this problem? Is there any easier solution available in Azure for a hybrid network like ours?

Thank you
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I would like to process an internal penetration test. Is there any recommended website ? a typical site has only 1-2 WAN IPs and 100 end points ?

Many thanks,
Chanaka
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How many Extensible Authentication Protocol methods are available and what are names?
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What is ERP in the wireless networking?
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Can we use an AWS (or similar service) SERVER to run our office domain network? We are a small office and don't want to spend the initial large cost of buying our own on site SERVER but want to have the benefit of "AD" to run our office network and want to know if we can use an AWS Server running windows server 2016  to be our DC, AD, DNS, DHCP and file server. We have a few (5) "workgroup" computers w/ windows PRO versions on them and thought that we could just have the server be on AWS (or similar) service and running our office domain network  so we can then join the PCs at the office to the domain server at AWS. Is this possible and if so what would I need in order to make this happen? Any extra hardware, software, etc. needed? Is it worth it? Are there any downsides to doing it this way (if it's possible) vs an on site server (other than cost)?

Thank you in advance for your help, it's much appreciated!
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Hi all,

 I face an issue with a Watchguard firewall and a SG300 Cisco switch. I have 4 Watchguard interfaces as Vlans 1, 20, 30, 40 and I cannot make the SG switch to work. In the switch, I have the vlans 1, 20, 30, 40 and the three already connected switch ports to Watchguard, are members of the appropriate vlans (20,30,40).

The switch port 1 is untagged to vlan 1 and the connection is OK. With the three  vlans, 20, 30, 40,  the switchports are Access type,  to vlan 20, 30, 40 respectively.

The result is that that the vlans 20, 30, 40 are not working.

Does anybody can tell me the right SG300 switch port modes for the vlans 20,30,40?

Thanks
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I have my internet connection extended to a portion of my house using powerline extenders. I would like to extend my internet to another area of my house but it's not on the same circuit and my router. How can this be done?
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Hi,

I check in my Exchange 2013 Receive Connectors and I see this:

security.gif
scope.gif
What I don't understand in security part I have: TLS checked, but in network adapter bindings I have: All IPV4 and port 25

TLS  doesn't use port 25 so what happen if TLS is checked?

Thanks
0

Networking

94K

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.