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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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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Fundamentals of JavaScript
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Fundamentals of JavaScript

Learn the fundamentals of the popular programming language JavaScript so that you can explore the realm of web development.

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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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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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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One of my clients wants to hard wire an ethernet connection to his other house. The houses are about 40 feet apart, and there is a 2ft wide path I will have to go through to get to the other house.

I know point to point wireless is an option, but my client insists on getting a wired connection. This is my first job wiring outside, so I'm brainstorming on how I can get it done. Any suggestions?

Thank you!
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I have encountered a laptop with a Microsoft login (I guess).  It's not typical of any of the other computers on the peer-to-peer network.
The login is AzureAD\Username - something I've never seen before.
Anyway, I'm trying to add a local user to the computer.
When I've done that, I have to select Other User.
It comes up asking for email address which is NOT what I used to set up the user PLUS Password.
It says: Sign in to: Your work or school account which is NOT what I used to set up the user.

If I click on other options and select the 10-key image, I get:
Username and PIN.
But I didn't set up with a PIN, only a password.

So, I seem to be at an impasse.

What's going on here?
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two NICsHi,
  I have a New Server with SuperMicro X11DPi-N Motherboard that came with two Gigabyte network adapter cards.
 My intention is to install Windows Server 2019, add HyperV role and create two virtual Machines - Domain Controller running W2019 and App Server running also W2019.
 Having said that, I just like to use one network adapter card unless there are benefits of connecting both NICs (getting two separate IP local addresses) to the switch.
 I heard of NIC Teaming. Would I benefit from it?
 If yes, how do you do that?

Thanks.
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Hello fellow Experts Exchange members:

I request assistance with a network issue!

I have a site with four Cisco SG300-28P 28-port GB PoE managed switches.

The switches are configured as follows:
      Management VLAN: 1 (unchanged from default)
      Other VLANs: office, voice*, guest (not all VLANs are configured on all switches)
      Ports 27 and 28 on each switch connect to other switches.
*The voice VLAN is just named Voice and not configured as a "Voice VLAN".

From the top downwards, the switches have the following IP addresses (last octets shown only):
      254, 253, 252, 251, 250

Port 28 on 254 is connected to port 27 on 253, port 28 on 253 is connected to port 27 on 252, etc.

The issue appears to be with the switch that has the IP 251.

With all cables connected, I can access the web interface and ping the switch with IP 254 from a different subnet and via a port modified to use only VLAN 1 (untagged) on that switch.

I cannot access the web interface or ping any of the other switches.

If I remove the cable connecting 251 with 252, I can access the web interfaces and ping the switches with IP 254, 253, and 252.

If I connect the cable on port 28 of 252 to port 27 of 250 (bypassing 251), I can access the web interface and ping the switch with IP 250 (along with all the other switches except 251).

If I connect all of the cables and connect a laptop to a port modified to use only VLAN 1 (untagged) on the switch with IP 250, I can access the web …
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What should my cname record be for external autodiscovery with EXCHANGE 2013?
Network Solutions gives these options..
1) alias
2) TTL
3) Other Host

Host should be autodiscover.mydomain.com or mail.mydomain.com? And what should be the alias?

Everything Exchange admin shows mail.mydomain.com
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I currently have four locations connected over an MPLS.  I recently replaced both DCs a the corporate office with two 2019 servers.  Since the change computers at each location are no longer able to see any other workstations/servers on the network.  I have a mix of WIN7 and 10 workstations.  If this is related to disabling SMB1 is there a workaround to emulate the same sort of browsing functionality?
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Learn Ruby Fundamentals
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Learn Ruby Fundamentals

This course will introduce you to Ruby, as well as teach you about classes, methods, variables, data structures, loops, enumerable methods, and finishing touches.

Once you've used up all your private RFC 1918 space, are there certain non RFC 1918 IP blocks that are best practice to use for internal addressing?
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Are there any known tools like advanced IP scanner I can use to scan the network and report OS?  I want to do a workstation survey and find out which machines currently on the network I am connected to are running Windows 7.
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I have two Sophos SG 230's that are configured for HA.  I have the LAN Port on the Master going to Switch 1.  I have the LAN Port on the Slave going to Switch 1.  I would like to add another LAN interface in the UTMs that I can use to connect them to Switch 2 for redundancy purposes.  

To properly do this, would I simply change interface eth0 (my current LAN interface) from "Type: Ethernet" to "Type: Bridge" and select one of the available interfaces / nics available on the UTM?
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I work in a corporate environment. I am based in the USA, corporate IT is in Germany. They image all of our computers via Matrix42. We have received a batch of new HP Elitebook 850 G5 laptops. I have them on our network and powered on. I have accessed the BIOS via F10 and have found that the PXE boot is enabled, but Germany does not see it. When the laptop boot, normally I would see the startup screen indicating IP addresses, DHCP info, etc. With the new batch, all I see is 'Protected by HP Secure Start'. I have access to the internet, so I know I am on the network. I can run IPCONFIG /all and see all my network info.

How do I configure this laptop for Network PXE boot?

Thanks in advance.
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Hello Everyone

How can I configure Linux wireless on a laptop to Not connect to public Wifi that has no password.?

Some of the commands I have been using need to have a SSID= to point to each Wifi network.
Is it possible to have only one SSID statement to point to all of them, similar to a wild card.
Example SSID=”*.*”

Example of what I currently have that can only point to one Wifi network.
edit /etc/wpa_supplicant.conf      
network={
  SSID=”CableWifi”  
  key_mgmt=NONE
  disable=1
}
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Hi,

I am trying to test out VRF lite which I have to implement. I have a single router with some loopback addresses in different VRFs. What I am trying to do is to import and export routes between them which I should be able to do with the route import / export command but I am not having any luck.

I know this makes no logical sense to why I am doing it but I need to test this before I implement it in a production network (with many VRFs).

version 15.5
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Test-DC
!

boot-start-marker

boot-end-marker

!

!

no aaa new-model

!

!


clock timezone EET 2 0

mmi polling-interval 60

no mmi auto-configure

no mmi pvc

mmi snmp-timeout 180

!

!

ip vrf Customer_A

rd 10:10

route-target export 10:10

route-target import 10:10

route-target import 10:20

!

ip vrf Customer_B

rd 10:20

route-target export 10:20

route-target import 10:10

route-target import 10:20

!

!

ip cef

no ipv6 cef

!

multilink bundle-name authenticated

!

!

cts logging verbose

!

!

redundancy

!

!

interface Loopback0

ip vrf forwarding Customer_A

ip address 172.18.7.254 255.255.255.0

!

interface Loopback1

ip vrf forwarding Customer_A

ip address 172.18.253.254 255.255.255.0

!

interface Loopback3

ip vrf forwarding Customer_B

ip address 192.168.17.254 255.255.255.0

!

interface Ethernet0/0

no ip address

!

interface Ethernet0/0.10

encapsulation dot1Q 10

ip

Open in new window

0
Hello Experts
I need a batch file or script to add map driver for network location with letter x for example and ask for credential
and another batch or script to remove that mapped drive and credential for that network address
The scenario information
server IP: 192.168.1.254
shared folder on that IP: Home
Domain name: Private.local
1
Keep getting the following error on one of our domain client's pc's:  The name "my domain' :1d could not be registered on the interface with IP Address: 10.1.1.43. The computer with the IP address 10.0.0.46 did not allow the name to be claimed by this computer."  
Log Name: System
Source: NetBT
Event ID: 4321 Level Error

The computer with this problem can access the domain (all mapped drives) and can ping everything on the network.  
This computer cannot be pinged (IP or DNS name) by any other pc on the domain.  
Here is what I have done so far:
  1. gave this pc a static IP address (was dhcp before)
  2. Flushed the DNS
  3. Un-joined it from our domain and then rejoined it back to the domain.

I am still getting the same error and cannot ping or access from any other computer or server.

Anyone have any suggestions?
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Network Adapter Card SpeedHi,
 I have a desktop PC where network adapter card shows 10.0Mbps, but network card is capable of 1Gbps.
 It is currently connected to  Linksys LRT215 Gigabit VPN router.
 Strange enough, when I connect this computer to a Ubiquiti Networks 48-Port Gigabit UniFi Switch (Part#: US-48-500W), there is NO LIGHT lit on the switch. But all the workstation PCs and other PoE devices are connected to this Ubiquiti and every single connected port shows link and activity light.
So I have no choice but to connect to Linksys LRT215 Gigabit VPN router. Linksys is daisy chained to Ubiquiti Switch.

Can you help?
0
HTML5 and CSS3 Fundamentals
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HTML5 and CSS3 Fundamentals

Build a website from the ground up by first learning the fundamentals of HTML5 and CSS3, the two popular programming languages used to present content online. HTML deals with fonts, colors, graphics, and hyperlinks, while CSS describes how HTML elements are to be displayed.

Afternoon gents.   One of our clients has a satellite office that has been experiencing severe drops in wireless connectivity.  I am going to be going out to the location to troubleshoot the connectivity.   The drops are not happening during tunnel connections they are just in general.   Currently I am told all the equipment is under a desk including the device giving out wireless access.   I was given the equipment they have which is included in this thread.   Has anyone seen this combination of equipment together ever and seen wireless drops happen?
I currently have no remote access to any of this equipment and will not be able to troubleshoot it until I am onsite but I wanted to see if I could get a jump on things and reach out to you for some assistance perhaps you may have seen this setup before and may know where the wireless drops are happening.   This is especially happening on one HP Laptop that I have fully reformatted, installed the latest drivers on including HP Support drivers for the NICS firmware yadda yadda.    They need this to be stable as they tunnel to their other office which has a WatchGuard firewall in place.  

Here is what they have from what has been explained to me.   I am unsure if firmware can be flashed? Or does the modem or firewall whichever is giving out wireless access need to be put on a desk and not under a table?  


Here is the kicker, they will have a laptop on the desk right on top of where all this equipment is located under …
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I have a range of IP's a beginning and and end how can I figure out the subnet?  209.182.170.239-254
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Hi,

I have Cisco 3750 switch. I configured 3 Vlans on it. VLAN 10,20,and 30. Is there anyway that I can give VLAN 10 access to  VLAN 20 and deny it from access VLAN 30? I mean I want network of VLAN 10 and 20 to see each other and communicate but can not access network of VLAN 30

VLAN 10 network 192.168.1.0
VLAN 20 network 192.168.2.0
VLAN 30 network 192.168.3.0

Thx
0
We have two separate sites, and they are linked with a high-speed network. Site A has a Vcenter version 6.X with vDS and Site B has vCenter 6.5  U2 with vDS. I am palming to upgrade both sites with vCenter 6.7, and I am thinking of implementing vCenter HA to manage both locations.
Let me describe my environment
Site A
VCSA6.* with Embedded PSC ,  srva.mydomain.local
vDS switches for the iscsi, virtual network,vmotion
Esxi mgmt network 192.168.3*
vCSA is in virtual network 10.10.1.*
Site B
vCSA 6.5 U2 with Embedded PSC, srv2.mydomaon.local
vDS switches for SCSI, VMotion, virtual network.
ESxi mgmt network 192.168.2.*
vCSA is in virtual network 10.50.1.*
I want to make one vCenter (Site A) as active and should include both sites A and Site B ESXi hosts in a separate cluster (cluster A and Cluster B) and make Site B as passive. Is it possible to do?
I have been reading about HA and Enhanced link mode etc, but they all talking about keeping the HA in one site.
I can not find the answer.
Can someone shed me some light and help me on this if it is possible?
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Updated My old Windows Vista for Business to a Win 7 Pro machine. A legal copy COA. It installed but upon final restart and confirmation of installation. No Adapter installed at all. The Device is not seen by Windows 7 Pro. However, I ran a tool called SIW which did see the adapter and saw WAN Miniport and RAS Async Adapter. No internet connect when before it was there. Hoping to get the machine to see the network and internet.

Also noticed a .NET framework 4.5v issue so I went to Microsoft downloaded repair tool then followed instructions then downloaded the files and got errors not sure if one affects the other. IF I can get to the internet seems like one issue may correct the other but not sure? Any help appreciated.

Log Installation FIle from the .NET attempt is included.
device manager does not see much of anything but the one driver i got installedSIW sees something However there is no device installed on the machine that win 7 pro seesRepair tool gave instructions which I followed but they did not work.Strange error message from .NET 4.5InsallationLogFile.rtf
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Hello, I am running server 2016.
I am trying to map to it, I can’t see it on my network.
I can Remote Desktop to it but I can’t map a drive from it.
I have set the Advanced Sharing settings in Private, Gust or Public, Domain, and All Networks to Turn on network discovery and Turn on File and printer sharing.
What am I missing?
Thank you
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.