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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I'm attempting to expand our NFS/CIFS/Samba file server to improve bandwidth, as well as create HA data redundancy.

One of the big bottlenecks is I'm limited to a 1Gb network in the building.

I'm thinking of implementing a hardware load balancer into the works, between the server(s) and the building 1Gb infrastructure - under the theory that we can spread the final load for NFS amongst different physical network cables amongst the clients, the 1Gb swicth, and the servers. (see diagram).

QUESTION: Will this actually improve the NFS/CIFS bandwidth for the individual end users?

Suggested load balanced NFS/CIFS
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I have users getting a 404 when attempting to access an internal website while not on the network.
The internal site is hosted on IIS.

For example they are at home and need to be on the vpn to make it work.
In this example they click the link, they are not on the vpn, thus they get a 404.

Due to the fact a user may not realize that they need to be on the vpn....

is there a way to handle messaging to the end user such as a customer error message or some other messaging letting them know to connect to the vpn.  I dont think a redirect works here since they are not on the domain.

Please offer some best practices.


Thanks,
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Hey Everyone,

Recently we are having issues with one of our domain controllers which is virtualized and running Windows Server 2012 R2. After a reboot, it thinks it is on a public network rather than a Domain Network. This persists through Reboots. We have also tired Restarting the Network Location awareness service with no luck. Tying to switch it back to either a private or Domain Network just reverts back to a public network. Under network connections, it shows its connected to the domain but has a “Limited” Status but it does have internet access and the DNS servers on the interface are currently set to itself as the primary and the Backup DC as the Secondary. Any ideas what’s going on or how to resolve it?
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Using different AS in EIGRP

Any Expert to explain the reason why some Network Engineers use Different EIGRP Automomous Systems even in Small to medium size Networks ?

Thanks
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What are absolute power levels, in terms of Cisco Wireless Networking?
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I have a customer who currently has an ENI for their default route from a private subnet in their VPC, but wants to change the default route to a NAT Gateway. Before I delete the route pointed to the ENI, I'd like to see what traffic flows over the ENI for the last few days and I want to see if the ENI interface is NATting any traffic. How could I see the logging - time stamp, source address, destination address, port number (source nat if possible)? Or a summary of the flows over time would actually be even better than a flat out listing. Thank you for any insight.
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What does the term LAG mean in Cisco networking?
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What is centralize mode in term of Cisco networking?
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Changing MTU in the Network.

I would like to know in case  we'll have to change MTU on a Router interface or Switch interface, whether we need to change that on every Router and Switch in the Network ?

Thank you
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Network advertisement

I have seen in Network advertisement , for instance:
Router eigrp 1
Network 0.0.0.0

This will advertise all networks for the interfaces that are connected to the router.
I have also seen the=is:

Router eigrp 1
network 0.0.0.0 0.0.0.0


Are they both the same ?

Thanks
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Does EIGRP Delay  value  change

I have read that EIGRP Delay Value is static and not dynamic. I know that Administrator can change it manually under the interface.
What I need to know is whether the Delay can be changed when the Network is experiencing heavy traffic or it stays the same.
If it changes dynamically then the Network should experience disturbance , I mean the path to the Destination will change according the new Delay.

Any Expert  to clarify that ?

Thank you
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I am looking to create a file server to store all my home network PC's and laptop files. Basically a home share - I don't need file and folder permissions but that would be nice so i could make sure the kids don't delete stuff they shouldn't. It would also be nice to have previous versions or shadow copies enabled so it is easy for my home users to restore files on their own.

I would also like to setup a pfsense firewall for my home network.

I was thinking i could build a server that would handle all of this in vmware! But the more i read i think it seems that I would need to purchase vmware essentials licencing and potentially  a windows 2008 r2 server license from Microsoft.

Is there any way to accomplish the above without purchasing licensing or maybe im just confused on the licensing stuff. Can someone please explain the licensing required for the above for a home setup?

OR is there a completely free or low cost alternative that would allow me to setup a virtual environment to accomplish the above? My budget is about 300$
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Why would a private AWS subnet have an ENI target for its default route instead of a NAT Gateway of IGW?

Route table from private subnet
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Our organization has deployed couples of Cisco 2960x switches stacked with Flexstack plus. Whenever our end users and application team experiencing slowness on the application, they always blame the root cause is related to Cisco switches network devices. Our question is what command can we use on the switches which can provide evidence/reports to prove that the bottleneck or the root cause of the slowness is not related to the Cisco network switches (e.g. CPU, interface utilization, errors etc.) ? Not sure if there is any guideline from Cisco as far as network switches performance is concerned?

Thank you for your kind advice in advance.

Regards
Patrick
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The office has a peer-to-peer network.
A Windows 10 Pro workstation is set up as a file server.
Up to now the server access has been wide open.
We are introducing a new workstation as file server.
We have decided to Enable Password Protected Sharing AND to provide the credentials by matching client user logons to users set up on the "file server" - that, in favor of storing Windows credentials for a server user on the client machines.

However, the owner has a laptop with an AzureAD logon.  This seems to mess up accessing the new "file server".
I've not found the magic formula for allowing him to get access.
All of the other users access just fine - but they don't have AzureAD logons - they are just non-Microsoft local users.
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We are going to start migrating sbs2011 to server 2016 STD.
We are trying to backup the system state using Windows server backup utility.
we have tried running CMD Wbadmin start backupsystemstate -backuptarget:L:    we are using a external usb Drive
it will always fail with The filename, directory name, or volume label syntax is incorrect.

I also tried backing up to a network share and to a different partition on the server.

I also setup the Server Backup utility to manually backup the system state also. Still fails with same error
Does anyone have any ideas as to why this is happening or a workaround?

We also have Datto backup which uses storagecraft shadowcopy which is a service that datto uses to backup the server.

Not sure if that will stop the server backup to run. I also checked the VSS writers and they are all stable.
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Primary desktop has Windows version 10.0.17763 Build 17763. Laptop on my LAN is version 10.0.17134. On each system, I have gone into "Advanced Sharing" and given complete access to both my C: and D: drives to "Everyone". However, on the laptop, within File Explorer, when I click on Network, I can see both PETER-DESKTOP and PETER-LENOVO. On the desktop, I see only PETER-DESKTOP. My suspicion is that this has to do with the different versions. I found, on the Laptop that I needed to log into PETER-DESKTOP using my Microsoft credentials rather than my local ones.

Should I move to a "local" access and away from OneDrive, etc.?

I want to be safe and protected against outside penetration, but I need to have complete and easy access among the three systems on my LAN (the third is also at version 10.0.17134.
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distribute-list prefix Prefixname gateway

Can someone put an example of what the command does?

distribute-list prefix Prefixname gateway in

Thank you
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IP prefix-list

Any Expert to explain what is covered in these IP prefix-list statements below:

ip prefix-list CLASSB permit 128.0.0.0/2 ge 17

same as this :
ip prefix-list CLASSA permit 0.0.0.0/1 le 27

Thank you
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Lions Tigers Bears Oh My. Got great help from the EE Gods over the last weeks. However here we go again with a confusing anomalie that keeps reoccuring. So today this question was solved and working as of late this afternoon. It was an update to Win 7 Pro. Got the Network connected and the Network Adapter working well. My Question So I did a backup and created a restore point for safety because I had everything working.

However Win 7 Pro had two hundred plus updates. The first batch was 174. Then like 20 now it is down to batches of 5-8 most important some optional. So I started down that road an I noticed that everytime I installed the updates the driver for the Intel 82578DC GIGABIT NETWORK Connection got WIPED OUT. Let me rephrase that. The network icon is still there but the small monitor screen in the lower right corner of the status bar shows up with a BIG RED X on it. So maybe it is just breaking the connection each time.  So I had to go back in use the file Intel® Network Adapter Driver for Windows 7*

to remove the installation because …
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I have a network in a small grocery store.  It is p2p and consists of a main computer running windows 10 Pro that acts as the host for the POS system.  There are 5 checkout points and one other computer that is used for management input.  All computers were new last May, and are Lenovo M720S with i5 processors.  All computers run Windows 10 Pro.

They are networked with a router and have static IP addresses listed in the router, as well as have their Ethernet cards set with static IP addresses.

All works well with the 5 checkout computers and the main host computer.  the Workstation used for management input has an issue connecting to the Main computer.  The problem computer maps to the 5 checkout computers without issue.  The workstation used for management input always maps to the 5 checkout computers, but after a restart, it often will not remap to the host computer.  The only way to get it to map  to the host computer, is to remove the static settings from the Ethernet card, let the router assign the address, then disable and re enable the Ethernet adapter.  If it is set manually to the same address as the router assigns it [the computers have their IP addresses reserved on the router], it will not connect to the host computer.  Even when the adapter is left to receive its IP address from the router, it will not map to the main computer without several tries of adding the IP and taking it away.  Using a different IP gives the same results.

The reservations are …
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TL;DR DFS Namespace does not recognise the AD Site (appear as site <unknown> in mmc) that the servers reside in, so clients can get connected to the wrong site file server via drive mapping to namespace occasionally which is not ideal as it's the remote site is over VPN link and slow



Having some issues with Windows AD DFS, hope someone can help, otherwise I'm going to have to call in one of those Microsoft Incident Support and eat the cost as my customer is starting to get a little annoyed.



Have a small network with 2AD sites linked by VPN (OpenVPN via the gateway device)

2 DC in main site, 1 fileserver (2016) all Hyper V

1 DC in branch office, 1 fileserver (2012 R2) all Hyper V



The AD Sites have been created, DC's put in correct ones and subnets set up for each site

I have verified where AD thinks the servers are by nltest successfully



I have successfully set up the DSR Namespace and Replication between the two servers which is working away merrily, but I have a strange issue. The clients have mapped drives to \\mydomain.local\files\relevant share but if I check the DFS on the properties of the drive sometimes they are using the remote fileserver and not the local one, which they should get connected to because of the site they are local to via the subnet as far as I am aware.



I noticed that in the DFS mmc the two file servers are in site <unknown> I think this is where the problem lies. I tried creating a new namespace but the …
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HP networking VLANs - simple layer 2 issue - data and voice - HP 1820Poe switch.

default VLAN 1 and create VLAN 50.

Untag ports 1-12 (poe ports) on VLAN 1 and Tagged VLAN 50

In Port 18 - VOIP phone system
In Port 21 - Sonicwall DMZ with DHCP configured
In Port 23 - Windows 2012 Server with DHCP configured

Problem is sometimes the PCs with get a DHCP from VLAN 50 and thus not authenticate into Active Directory and phones will get a DHCP from Windows server.  Not always but they had a power outage today and when things booted up, nothing worked.

Question is - what am I doing wrong?  How should ports 18, 21 and 23 be tagged/untagged?  And are ports 1-12 programmed correctly.  Not all but normally connections are switch port to phone ethernet and 2nd phone ethernet to PC.  Some phones have their own connection into switch (2 ports in an office so no daisy chain)

(Network was existing and they upgraded phone system and vendor sold them a VOIP system)

These switches are low end and have a weird type of "trunking" mode where you have to group ports into a trunk.  In the Cisco world, I would simply trunk all ports and everything would work but I tried that here and it did not work at all.

Thanks for any input.
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Has anyone run into scanning issues with the Xerox Phaser 3635MFP.   This was working just fine up 2 about 2 weeks ago.   I changed the DNS settings on the DC to reflect the correct DNS and the scanner has lost its ability to scan to folder.  


Current setting


IP 192.168.14.11 local static
class c subnet
192.168.14.5 gateway

192.168.14.30 <-- DC

127.0.0.1 secondary DNS
8.8.8.8 akternate DNS

File repository setting

NAME (Customer name)
Protocol SMB
hostname file server name no \\ or //
share scanned (Name of folder) no \\ //
login domain\administrator
domain admin pw

the only thing that was changed was the DNS which I updated on the scanner as well.

The folder has system full access as far as permissions.

Help.
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Getting a TLS error on a particular web site when connecting via a Fortinet VPN connection. Error is "Can't connect securely to this page. This might be because the site uses outdated or unsafe TLS security settings".

The site works fine when connecting from the local LAN.
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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.