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 have a network user account recently started being locked out.  I re-enable the account and a minute later is locked out again.  Is there a way in AD to tell what is locking out the account without having to go to each server and see if it is being used to logon for a service?
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I have a new Dell R620 Server running Microsoft Sever 2012.  The server has 2 network adapters with 4 ports each.   I have Hyper-V running and I have 3 VMs.  Two of the VM's are each running on a single NIC and I'm seeing Ping Times of 1 to 2 MS.  For my account server I decided to setup a team one port from each adapter for redundancy but the ping times are much slower.  Usually around 4 to 5 MS.  I would have thought a team would be a little faster.  Is that not the case of do I need to change some configuration.

The Network adapters are Broadcom and Intel.  Should I just go with a single NIC like the other VM's for a little better speed or stick with the team.
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I have a new boss who doesn't understand what my department does.

I was hoping someone on EE has been in the same situation where they've had to put together an outline of exactly what IT does.

If anyone is willing to share what they have that would be appreciated.

If you have a chart of the IT department that would be GREAT.

Or if anyone has a link to a good site that describes IT, that would also be appreciated.
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I have new Windows 2012 R2 NPS member server that was setup for the purpose of Wireless Authentication via RADIUS.  
I have successfully connect when logged into the computer and the Windows Groups that are allowed are Domain Users or Domain Computers.  If I remove the Domain Users group from the NPS Policy and only have the Domain Computer I am not able to authenticate and I get event id 5632 on the client computer.

EAP Root Cause String : Network authentication failed due to a problem with the user account.

This is a trusted computer (At least I think so).  I am not sure why it cannot authenticate
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I will be migrating a Google Gmail email domain to Office 365.

I have gone through and completed all the required steps as documented on the Migration Wiz website to do this.

I have created the required TXT record within this company's external DNS provider (asmallorange.com) and have been told by the Office 365 domain wizard that I need to add the records shown in the screenshot to our external DNS provider (asmallorange.com).

Is it possible for me to add these records to our external DNS provider (asmallorange.com) while leaving the existing records for Gmail in place?

I want emails to continue to go to user's email accounts within Gmail. The only thing I want to do now is to finish the domain verification of the domain name that is currently being used by Google/Gmail so I can then use the migrationwiz.com website to migrate the email from the Gmail servers to the Office 365 servers.

Then once this migration has completed I will replace the external DNS Gmail email records with the Office 365 DNS records shown in the screenshot and will create new Outlook profiles for all users so Outlook will connect to the Office 365 servers for email.

What I need to do now is to finish the email domain verification within Office 365 so I can then perform the migration wiz migrations (while we coninue to use Gmail as our email service provider--but I don't want to interrupt any future emails from arriving at the Gmail servers until I officially cut the online DNS …
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A client recently asked my help with obtaining and maintaining PCI compliance which was being required by his merchant services provider. There are a lot of internal "Policy" items involved, so I wondered if anyone knew of a pre-done package that could be integrated into the employee manual to achive these requirements rather than re-making the wheel, so to speak. I also have questions about PCI compliance in a small (10 employees) firm - the questionaire requires a lot of overview nd log checking, which if the entire network is subject to these rules, would be a rther daunting task. Has anyone gone with setting up a single workstation on an isolated VLAN in order to simplify this process?
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Hi,

If there's anyone out there that can think back far enough, I have a friend that's still using SBS 2003.  At some point last week it disappeared off the network.  We did manage to get it back on the network by using an alternative onboard NIC, but since then multiple services refuse to fire up.  There are multiple error codes, all seem to point at dependancy issues.  Among many, the Workstation Service does not start, along with many of the Exchange Services.  Has anyone experienced something like this historically and resolved it?
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We have a project to monitor 100.000 remote pc's which using Windows XP platform.
Are there any software recomendation for agent and server to monitor and control the pc's ?
1. Software able to monitor and track CPU , memory and low space disk
2. Software able to monitor which application installed on the Pc's
3. Software able to monitor inactive pc /shutdown
4. Software able to control the PC, (Shutdown, uninstalled application, update antivirus etc )

Bes reagrds

Romeo
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PC's ( some ) of a specific VLAN is not able to do a policy update "GP update command" and still doing "policy updating" for a long time without any result, is it VLAN or network issue and how can I make sure that is not an error with the network (if there is any show command) and what can I do to resolve it (We try restart PC , and all antiviruses and firewalls are off )  ,,,,,

Thank You.
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Hello,

I got a "new to me" Cisco 3825 to try to fix some capacity issues our old router is having.  It's a consumer grade Linksys router.  I've tried to duplicate the connection settings, but I cannot make it out to the internet.  From a host on the connected switch I can ping various LAN points.  However, I cannot even ping an external IP, such as 8.8.8.8.  

Following is the show run:

Router1#show run
Building configuration...

Current configuration : 1625 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router1
!
boot-start-marker
boot-end-marker
!
no logging console
enable secret 5 $1$fi/i$a3lQyNfFM/KRdVN7KFGuy/
enable password <password>
!
no aaa new-model
ip cef
!
!
no ip dhcp use vrf connected
ip dhcp excluded-address 10.0.1.1 10.0.1.2
!
ip dhcp pool DHCP
   network 10.0.1.0 255.255.255.0
   default-router 10.0.1.1
   dns-server 8.8.8.8 8.8.4.4
!
!
no ip domain lookup
ip name-server 8.8.8.8
ip name-server 8.8.4.4
voice-card 0
 no dspfarm
!
!
interface Loopback0
 ip address 10.0.2.1 255.255.255.0
!
interface GigabitEthernet0/0
 description LAN
 ip address 10.0.1.1 255.255.255.0
 ip nat inside
 duplex auto
 speed auto
 media-type rj45
 no mop enabled
!
interface GigabitEthernet0/1
 description WAN
 ip address <external IP> 255.255.255.248
 ip nat outside
 duplex auto
 speed auto
 media-type rj45
!
interface …
0
NFR key for Veeam Agent for Linux
LVL 1
NFR key for Veeam Agent for Linux

Veeam is happy to provide a free NFR license for one year.  It allows for the non‑production use and valid for five workstations and two servers. Veeam Agent for Linux is a simple backup tool for your Linux installations, both on‑premises and in the public cloud.

Hello ,

We are facing with a strange issue  , first of all i need to be sure  , if packet marked with SACK_PERM then does it really need to have TS , WS ?

there is nothing between SACK and MSS values  02 04 05 b4 04 02
0000   a0 36 9f 55 7c aa dc 38 e1 ac 9b 89 08 00 45 00  .6.U|..8......E.
0010   00 3c 7d 23 40 00 2e 06 47 3c 67 f6 c9 98 b9 09  .<}#@...G<g.....
0020   9d c4 81 5b 00 50 39 00 25 a3 00 00 00 00 a0 02  ...[.P9.%.......
0030   72 10 bb 2c 00 00 02 04 05 b4 04 02 08 0a 59 97  r..,..........Y.
0040   58 80 00 00 00 00 01 03 03 07                    X.........

Open in new window


Before Sack_Perm there is additional :      02 04 05 b4   01 01 04 02
0000   a0 36 9f 55 7c aa dc 38 e1 ac 9b 89 08 00 45 00  .6.U|..8......E.
0010   00 30 a6 03 40 00 7e 06 c9 84 bc 47 5a 47 b9 b6  .0..@.~....GZG..
0020   bc fa c4 22 00 35 64 18 ae 7c 16 a5 e2 49 70 02  ...".5d..|...Ip.
0030   20 00 06 04 00 00 02 04 05 b4 01 01 04 02         .............

Open in new window



what is this between MSS & SACK options in the packet ?


Screen-Shot-2017-08-14-at-16.46.45.pngScreen-Shot-2017-08-14-at-16.46.11.png
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I have what i think is a basic set up but i am unable to route between vlans on certain switches.  The basic set up is an aruba 3810 that connects to two aruba 2930 switches.  There are several 2930s connected to the 2930s that are connected to the 3810 and the 3810 uplinks across an eline to another site but i am focussing on just the 3 switches; the 3810 and the two 2930s directly connected.  The configs are attached.  I am only working on vlan 5 and 10 right now.  When i connect to the 3810 on vlan 10 i can get to the 3810 IP on vlan 5 but i cant get to either 2930 vlan 5 IPs.  I am expecting the 3810 to route for all these vlans but it doesnt seem to be.  The route table shows that it should.  Ignore the ospf config info as ospf is actually disabled.  This was for testing and potential use later.
5th2930-02Current.txt
5th3810Current.txt
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Hi Sir,

Would like to ask for your help about the problem listed below,

[Tunnel Authorize Fail] ignoring Delete SA payload: PROTO_IPSEC_ESP SA(0xccb797a8) not found (maybe expired)

Hoping that you can help me resolve this matter.


Thank you in advance.
0
My "server1" Windows 2012 R2 has two NICs, with two static IPs, 192.168.20.10 and 192.168.37.10

When ping  "server1" from a client on the 192.168.20.x it replies with the 192.168.37.10 IP and says it cannot find it

How can I get "server1" to reply as 192.168.20.10 instead ?
0
Residential account installed a server and SonicWall. Haven't asked Spectrum if commercial account is an option and prefer not to.

Ubee router, according to Spectrum is in gateway mode, meaning all data is passed onto the SonicWall. Problem is SonicWall will allow network for awhile however the Ubee device acts as if it competes the only way to get it to work again is by resetting. When this happens it appears the Ubee modem resets and is no longer in gateway mode. According to Spectrum a soft reset should not allow gateway mode to be removed.

Anyone know the best way to configure Ubee Spectrum cable modem to a SonicWall? Does Spectrum offer a better modem option, Ubee seems to be extremely limited.

Thank you.
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I have a stand along Windows 2008 Server on a small non-domain network. My Security Logs are being over run by attempted logins to 3 different account along with the accounts being locked out. I attached the Security Logs. Some trouble shooting I have tried:

I shutdown all the pcs on our network. The issue persists.
I shutdown all non Microsoft services. The issue persists.
I did a complete virus scan on my system and no issue is being found.
I shutdown my network adapter and the issue stops. Obviously not a solution as I have users that attach to shares on this server.

Any thoughts and or ideas. This is very frustrating to me and my users.

Thanks
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We used the MSVM Converter 3.0 to migrate a W7 guest from Vmware 5.5 ESXI to Hyper-V 2012 R2. The conversion went smoothly, the computer boots up, but no network connection. The Driver shows as Error 31 Device is not working properly because Windows cannot load the drivers required for this update.  Things I have tried:

1) Removing the NIC, shutting down the guest, removing and readding the NIC to the guest from Hyper-V Management console. I have tried legacy and standard NIC's connected to different networks, without any change in behaviour. Both the Intel 21140 based driver and the normal Hyper_V Nic driver show up as the same error.
2) Set non_present devices to visible in command prompt and removed everything except the Miniport and other built in NIC's No luck.
3) As soon as I uninstall the nic and scan, it detects the NIC and instantly fails to install it.
4) Removed the config key from the registry for the current control set
5) Installed Integration Services.

IPCONFIG and NCPA.CPL show now network configuration.

The vmware tools appear to have been sucessfully removed during the migration (The machine was on during the migration).

There are other guests on this host which work fine that were also converted. They are using either the legacy or standard hyper-v nic connected to the same network without issue.

Because I can't get connected to the internet, getting updated drivers is difficult, however, given it doesn't appear to even be trying …
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What are the exact steps to lookup which company hosts a company's external DNS records?

I will be migrating a company from a corporate Gmail account to Office 365. Currently no one knows which company is being used to host this company's external DNS records. I will need to change these external DNS records to point to the Office 365 servers to successfully complete the migration from Gmail to Office 365.

I'm already familiar with using websites like MXtoolbox.com but where within MXtoolbox.com or other websites can I determine exactly which external DNS provider hosts a company's external DNS records including the MX records?
1
My issue is two fold, why can I PING an IP of a device that isn't on the network and I can't print.

I have a Datamax label printer that I just created a device description for and assigned it a new IP address, this printer is plugged into a switch, the switch is plugged into a firewall that goes through to another firewall before it gets to the IBM i.  We have two partitions, PROD and TEST.  I copied the device description and out queue from TEST to PROD to ensure they were identical on both sides.  

This printer works perfectly in TEST.  When plugged into the network I am able to print to it, I can PING its IP, TELNET to it and the trace route returns the three expected entries.  When I vary off the device and unplug it from the network I cannot PING it from the IBM i nor the network, I cannot TELNET to it and the trace route only returns the two expected entries.  All as it should be.  

However, in PROD I am unable to print to the device.  When I release a spool file it goes right to RDY status and the writer gets error CPD337F Error CPD337F.  I have verified that the port and IP are correct, I have verified that the remote device is not busy, I have verified that the printer is on line.  I can PING its IP from both the IBM i and the network but I cannot TELNET to it and the trace route returns only two of the three expected entries.  When I vary off the device and unplug it from the network I can still PING it from the IBM i but not from the network, I …
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Get free NFR key for Veeam Availability Suite 9.5
LVL 1
Get free NFR key for Veeam Availability Suite 9.5

Veeam is happy to provide a free NFR license (1 year, 2 sockets) to all certified IT Pros. The license allows for the non-production use of Veeam Availability Suite v9.5 in your home lab, without any feature limitations. It works for both VMware and Hyper-V environments

Running SPX 6.5.2 and Oracle Virtual box 5.0.10 and when attempting a virtualboot am getting

There was a problem impersonating the network share user.

The image is out on a NAS ,but will not boot,so anybody get any ideas?
Tried 2 different computers ,a Poweredge Xeon and an Insprion  I7 ,both with virtualization turned on.
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I need to be able to reset a Motorola (Brocade) AP 650 Access point back to factory defaults. I've tried the Motorola AP Discovery Tool, and it has errors and does not work. Any ideas would be helpful. Only have to support these APs for about 1 more year. I do NOT know the IP address of the AP's but I do know the zero config for layer 2.

Again any ideas would be helpful. Thank you

MC
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Hi All, i have attempted to ask Synology themselves but can't seem to get a decent answer. All they tell me is that Veeam is compatible with the Synology NAS

In the process of installing a Synology DS916+ NAS onto a network to be used as a Backup Repository for Veeam B&R

Now, Synology claims that the NAS has Encryption that would protect files from say Ransomware.

My questions are these:

1) If is use Veeam B&R to backup my VM's to the NAS, does the Veeam Backup create multiple copies of these backups so i can restore from a particular date and time? Multiple restore points?

2) Are these backup files encrypted and hopefully protected from Ransomware attacks?


Synology talks about the Hyper Backup facility that come with the device and this seems to have recovery points which i would assume are encrypted, but how does this work in terms of Veeam backing up to the NAS and would i have the same benefits of recovery points and backup encryption

Thanks everyone
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Hi,

I have an HP Server with 4 network cards (NIC teamed), after that installed Hyper-V (Server 2012 R2 with full GUI) and on it runs +/- 10 Hyper-V VMs (all Windows 2008R2 and 2012R2 Servers).

The network cards on the Hyper-V host are all 1Gbps and connected to two stacked 1Gbps Cisco 2960G Switches. I used to get 115MB/s throughput on copying between the Hyper-V Host and other physical Servers on the same Subnet.

Suddenly since mid July the throughput went down to +/- 250 KB/s when copying files from that Hyper-V host to any other physical Servers on the same LAN, we discovered this when I picked up that suddenly backups were not completing anymore and also that then copying data from the VM's on the host to any other servers it runs at the same (+/- 250 KB/s) speed.

Any ideas of what the heck could be causing this massive reduction in network speed?

All seems fine on the Host, I've restarted it, IPv6 is disabled.

Thanks for any ideas where we could start to troubleshoot.

Reinhard
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Strange issue... I bought an LG Smart TV a few months ago, running WebOS3.  It's been running with no issues since I hooked it up.
Today I finally got around to hooking up their "SmartShare" to stream all the vid content from a PC (the TV itself has virtually no onboard storage).
Just had to install their SmartShare app on the PC (which is running Win10 Pro), and the TV finds it.
But as soon as I start playing a video, it will last about 2-3 minutes, and the take down my entire wireless network....  and I have to power off the router to get it operational again.

No idea where to even start looking.  Any ideas?
1
I'm trying to test network connectivity from an Ubuntu 16.04 server to a Windows 2008 server for a piece of software I'm running.  I have a share on my Windows Server that I need to access from the Ubuntu server, I'm not a Linux guy, how can I go about doing this, everything I find on Google is from Windows to Linux, I need Linux to Windows
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Networking

90K

Solutions

66K

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.