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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ASA Can ping between subnets, but not pass IP traffic (access rules in place)

have tried getting my ASA to route traffic between subnets, i got it working for 10 minutes but after some changes (unfortunately not an ASA expert) i have broken something.

One example is 192.168.35.0/24 and 192.168.42.0/24 pings OK but IP traffic does not flow, not sure what was changed so appreciate review of the config.

I have the following interfaces and objects attached Interface-Objects.txt

For debugging i have opened up the rules and applied rules to allow any traffic form user VLAN 35 to any other network, and vice versa to allow any traffic from VLAN 42 to any other.

I am able to ping from 192.168.35.3 to 192.168.42.5, but i cannot send any actual IP traffic. I ahve allowed IP traffic and sure that inter-subnet traffic is not being NAT, any ideas please what the issue could be?

Remaining relevant config Config.txt, thanks in advance.

Packet tracer reports OK from users to voice Packet-tracer-reports-OK-from-users-.txt

Voice to users Voice-to-users.txt

I hope that will help me resolve the issue. Is ASA v9.8 on a ASA 5506

Routes are fine on IP Office, it can ping the ASA on 192.168.42.1, it has internet access, but cannot do anything intervlan.

Switch on 172.16.35.249 can ping 192.168.42.5, but not vice versa…. there are some serious issues going on but to be honest refuse this can be so hard as checking the logs can see errors regarding “no matching session” whatever that means something with NAT I guess.

Many Thanks Alex
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Cloud Class® Course: C++ 11 Fundamentals

This course will introduce you to C++ 11 and teach you about syntax fundamentals.

I have a fortigate 60d.  I want to update the firmware.  It is currently running 5.4.4
I was going to update to 5.4.9 to play it safe.  Should I just update to 6.0.1?
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I have one switch that is giving me a problem, randomly, once or twice a week, the trunk ports just shuts down.  I noticed all the ports have lights on them, except the trunk port.
I have restarted the switch and the port still doesn't come up.  If I unplug the cable and plug it into another port, then plug it back into the trunk port, then it comes back up.

I reviewed the config and as far as I can see, it's all the same except one switch is using the: spanning-tree portfast default  command.
I wonder if I should even be using that command, as I noticed some switches have the command and some do not.  
Besides that, the config is the same, so I wonder what is causing port 28 on switch .38 to shut down.  So port 28 on switch .38 is connect on port 50 switch .39.

I have attached the configs, if anyone has an idea's, I'm all open to hear them.
crack.txt
whub.txt
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Does Server 2016 have a Hardware Compatibility list for Network Attached Storage Devices that will be used to host the virtual hard drive and settings files for Server 2016 virtual servers?

If so what is the URL for this list?
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I have a computer on a network that will not log off or log on while attached to the network.  The computer is running windows 10 update 1803.  The server is Server 2012 R2.  The user is using a roaming profile.  This network has worked fine for a few years now.

The only way to connect to the network is to disconnect the network cable and the user can log on.  Reconnect the network cable, and the user is able to access all data and peripherals.  The computer sits at the welcome screen and has been left for over 2 hours.  If you go to restart the computer while physically connected to the network, it will sit at the restart window for over 2 hours.  Di connecting the network cable allows the computer to restart.  

From the server, prior to the restart command, net session will be at 0 and net file will not show anything for this user.  Once the restart command is issued, net session will go to over 600, and slowly reduce to 8.  Net file will show many files open and will slowly reduce to 8.  Using net file to close the files will have them go away and come back agian.  

There are no errors in the event log to consider.

Trying to log on as Administrator [network administrator] gives the same results.  If the computer is logged on just local, it works just fine.

Probably the net session and net file data is not an indication of the problem.

Would it make sense to delete the profile and create a new profile?
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Trying to join domain, get error message that makes no sense.  I can join other computer to the domain.  I inherited this system from another IT M anager.  Who knows what coyuld be going onb...maybe someome can see the error and help to fix my issue?
I do not use WINS...
--------------------------------------------------------------------------------------------------------------------------------------------------------------------
Note: This information is intended for a network administrator.  If you are not your network's administrator, notify the administrator that you received this information, which has been recorded in the file C:\WINDOWS\debug\dcdiag.txt.

The domain name "CORP" might be a NetBIOS domain name.  If this is the case, verify that the domain name is properly registered with WINS.

If you are certain that the name is not a NetBIOS domain name, then the following information can help you troubleshoot your DNS configuration.

The following error occurred when DNS was queried for the service location (SRV) resource record used to locate an Active Directory Domain Controller (AD DC) for domain "CORP":

The error was: "DNS name does not exist."
(error code 0x0000232B RCODE_NAME_ERROR)

The query was for the SRV record for _ldap._tcp.dc._msdcs.CORP

Common causes of this error include the following:

- The DNS SRV records required to locate a AD DC for the domain are not registered in DNS. These records are registered with a DNS server …
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Upgrading domain functional level from 2003 to 2008 with Exchange 2007 SP3

I am a little hesitant about upgrading the DFL and FFL to 2008 because of my Exchange system.  Reason being, my Exchange server seems to be hooked to my 2008 DC even though I have confirmed all roles are moved to my new 2008 R2 DC and Exchange recognizes it as a GC.  But when I ran a test to see how Exchange would react to the 2008 DC going down it was a mess.  I couldn't even open EMC anymore because it didn't seem to be able to read the info it needed from AD.

My environment consists of:
1 domain controller (old primary) that was an in-place upgrade from 2003 to 2008 and is a GC.  Since the upgrade it has never been the same.  Used to freeze up all the time and needed to be rebooted because strange login type issues would appear across my network.

1 domain controller (new primary) that was a fresh build of 2008 R2 now has all FSMO roles and is a GC.  All domain diagnostic commands run successfully on both DCs.

1 Exchange 2007 SP3 server on 2008 Standard.

6 other member servers consisting of 2008, 2008 R2, 2012, & 2016

All PCs on the network are Windows 10 Pro


I am hoping I can dig into Exchange and figure out how to make it look at only my new primary DC for everything but am not sure where to look.  The places I have looked in EMC show both my old and new DCs as GCs.  I need to be able to test it's ability to work off of the one new primary DC because I plan on retiring the …
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We have had an ongoing issue.  We have recently installed several new workstations in our network.  All of which are Windows 10 Pro 64Bit Stations.  We re-installed our licensed copy of Microsoft Office 2010 (32Bit Version - Service Pack 2).  Outlook works but we are unable to use or setup signature files.  When we go into the outlook options area and click on either Signatures or the Fonts button, outlook freezes.  We then have to run the task manager to shutdown the program and restart it.  We have researched this error and implemented several "Fixes" including re-installing Office 2010 which did not work.  We then made the following registry changes:

32-bit version of Office on a 64-bit version of Windows HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{0006F03A-0000-0000-C000-000000000046}\LocalServer32
and added the correct path to Outlook.exe - still no joy.

Im not sure if we are missing anything here and was hoping someone out there may have a different fix that we can try.
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We use Nas boxes for network drives and SharePoint 2010 for versioning.

I would like to migrate to SharePoint online and use Windows 2016 as a file server. Has anyone used W2016 as a file server and do you have any pro's and con's.

Many thanks

Mack
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I would like tome help creating an ADFS 3.0 Issuance Authorization Role to deny off network for all users except a specific AD group. That specific group needs to be able to access the SSO off the corporate network. This is probably simple for the ADFS veterans but I am a newbie. Any help is appreciated.
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Cloud Class® Course: SQL Server Core 2016
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Cloud Class® Course: SQL Server Core 2016

This course will introduce you to SQL Server Core 2016, as well as teach you about SSMS, data tools, installation, server configuration, using Management Studio, and writing and executing queries.

I am researching and testing migrating to SNMPv3 from SNMPv2c on Cisco networking equipment. We are a small company (Approx. 30 routers and switches) and we monitor the network using SolarWinds NPM and have had no problems getting event notifications when gear bounces or monitored interfaces bounce.  Based on that alone I am thinking that what we have configured generates adequate information/notifications so that all that has to be done to migrate is peel off the SNMPv2c config and add SNMPv3 config.

My question is two fold.  Is my train of thought accurate? Secondly, if I specify OID(s) and or specific traps to be generated  will the only notifications we receive be the ones specified?



Current SNMPv2c config:
snmp-server community xxxxx RW
snmp-server location yyyyy
snmp-server contact zzzzz@iii.com
snmp-server chassis-id somerouter
snmp-server host x.x.x.x version 2c xxxxx


Proposed Config:
snmp-server group xxx v3 priv
snmp-server user someuser xxx v3 auth sha ooooo priv des ppppp
snmp-server location xyxyxyxyx
snmp-server contact zzzzz@iii.com
snmp-server chassis-id xxxxx
snmp-server host x.x.x.x version 3 priv xtrewq
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Hello,

I have a Cisco 4500 as my core switch. I am not running ip routing, but rather have default-gateway setup. I have multiple VLANs and am routing them all to the Cisco ASA firewall. The VLANs are fed to the respective ASA interfaces as DMZs.

The DMZ servers have had to put in their respective DMZ's ASA IP as the default gateway for internet access. If they change it to their 4500's IP, which it should be, they lose internet access.

Please help.

Thank you.
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Is there anything I can do to increase our VPN speed?  We use the built in VPN Microsoft has in Win7Po and SBS 2008. The SBS 2008 is at a data center with 100/100 speed and the Win7Pro machines have 100/10 connection speed.  However the VPN speed tests at 18/5 speed.  If I disconnect from VPN and speed test again, the speed is 65/9 roughly.  When I VPN connect again, speed tests at 18/5 again. So, why is VPN so slow and how can I increase the speed?

Another point is this: not long ago the Win7Pro machines where on a connection speed of 50/5 and when we VPN"d to the SBS 2008 that is on the 100/100 speed network, the speed was still roughly 18/5.

So, seems like the internet connection speed is not causing the limitation.  What should I look at?
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hi,

as MS SQL has always encrypted feature, what is the diff between Network Encryption and always encrypted?
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Hi Experts,

I am trying to get my freshly installed Windows 10 tablet to open files that are on my NAS.

The NAS is called Gajah2.

Here's what I see when I open Network with File Explorer:

Network in File Explorer

I can see Gajah2 under Media Devices and Other Devices, but not under Computer.

I have another PC that has no problem accessing files from Gajah2.

Regards,
Leigh
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I have 3 building that are using DHCP on my sonic wall.  I wanted to setup a dedicated DHCP server in the network 192.168.0.5.  I have gotten it to work great for the 192.168.0.X range.
I have a connection going to another building that is using IP address's of 192.168.30.X.  When I use the DHCP on the Sonic wall it works (I did not setup the sonic wall)  I setup a new scope on my DHCP server for 192.168.0 and 192.168.30, I disabled the DHCP on the SONICWALL and thought it would be able find the DHCP server in the subnet of 192.168.30, but none of those devices are seeing it.  That mean I missed a setting on the Sonic wall that routes DHCP to thew subnet for 192.168.0.  If possible can I get some assistance in this configuration?
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Hi Support

We having issue  to access the following network drive for SIN-Commercial, there is no prompt for username and password. Capture-for-issue-to-access-workgrou.PNG
Please note all users was in workgroup access, i have noticed once I able to access the SIN-Finance, i will having issue to access other network  folders.

thanks
1
Hi,

We are trying to move to SharePoint online. We have an access database which has a backend database and front end link. I copied all the files from the file server to the Sharepoint document library and connected it as a network drive to my PC. The front end is giving an error saying "Runtime Error 3043. Your network access was interrupted. To continue close the database and then open it again."

I tried to link the database as external data source but it gives an error saying cannot link to an internet-based source. Can someone advice how can we fix it?

Regards,

Ajoy
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I have a few Dell Wyse Thin Clients on one location that connect to a terminal server on another location and the location that has the thin clients just got a network printer installed.
I want to be able to set that printer so they can print from the rdp session. Is there a way to set the printer on the thin client to print from the rdp session?
I wish I can remote desktop from my location in to the thinclient since I'm about 5 hours away from them but I did not figure it out yet how so I have to find step by step instructions on how to set that printer if is possible
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Hello,

 

 

I have a Cisco ASA 5510 Version 9.1(7)9 with multiple tunnels, (2) of which have duplicate hosts. These 2 tunnels are completely separate no communication between the two. The Chicago tunnel was just added and appears to be having issues with 105.180.90.16 passing traffic.

 

Can I have duplicate hosts like this  ? dev1 and Chicago-local share a local IP too 192.168.68.58

 

nat (INSIDE,OUTSIDE) source static dev1 dev1-Global destination static kansas kansas

 

object-group network kansas
network-object 105.180.90.16 255.255.255.255

 

object-group network Chicago-remote
network-object 105.180.90.16 255.255.255.255


nat (INSIDE,OUTSIDE) source static Chicago-local Chicago-local destination static Chicago-remote Chicago-remote no-proxy-arp route-lookup
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the internet here will go out for 5 - 10 seconds several times a day.

Wondering if there's anything you can see that's a problem or just a loose connection on the pole somewhere (and how likely will they find it?).

I was using a new netgear docsis 3 modem and having this problem.
Got a Cablevision supplied motorola docsis 2 modem and put that in and problem continues
theres only the cable modem on the coax. No TVs.
Connections I can get to - both sides of the lightning arrester / grounding tap outside and the cable connection onto the modem are tight and cablevision installed connectors.
i set up to ping 1.1.1.1 -t.  It'll go on for a while with time of 10 - 15 ms.  then it'll just stop for 5 - 10 seconds.  Then start back up with 10 - 15ms.
I was getting similar error messages on the netgear router, now these messages.  I'd think any systemic / DHCP address problems would have the connection be out completely, not for 5 - 10 seconds every once in a while. But are these errors indicative of other issues?

I called cablevision and they poo pood their old surfboard modem. So I put the netgear back in the network.  Got the errors in the last picture.  And internet went out for minutes and I rebooted the modem and it came back up.

There's a picture below of the signals at the netgear and it has a 6db attenuator in it. the rep said signals are ok / better with the 6db in there than without it.  But the uncorrected errors?  the outage needing a reboot?  And the …
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Our users keep leaving the VPN connections on their laptops active. This means when they arrive at work and connect to the network DHCP completely breaks and goes into a death-spiral of assigning bad addresses.

Any ideas on how I could prevent this from happening in the future? (We are using Sonicwall's GlobalVPN client).
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HI Experts,

I have some co-workers who are in another office temporarily.  There is existing wifi already in place and also configured through the ports in the offices.  We have permission to use it.  Problem is that our management does not want to plug directly into theres and went out and purchased a wifi router of our own.....

They set it up and are connected to the wifi of this new router but it only works when he is plugged into the wall through his laptop which isn't making any sense to me.

I do not think plugging directly into their router is a option.  

I really don't feel like this is ideal or should be working but I'm not really clear on why, but it just doesn't sound right and I have to get them connected today.

Any suggestions?

Thank you,

Karen
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I had this question after viewing FTDisk Error Event ID 57.

Hi
I am repeatedly getting event id 57 in eventlog in my XP machine *after some time* when I perform weekly backup to an *internal* 2TB WD disk WD20EZRZ.
This happens with internal disk only, no issue if I make backup to USB disk instead of internal disk.
Details:
1.      When issue happens I run the WD diagnostics tool, which does not find any issue => disk is OK
2.      Event is 57 with text: The system failed to flush data to the transaction log. Corruption may occur, is followed by event id 50 :Delayed Write Failed} Windows was unable to save all the data for the file . The data has been lost. This error may be caused by a failure of your computer hardware or network connection. Please try to save this file elsewhere.
3.      After low level reformat of disk, there will be no issue for some time, typically 1 -2 months.
4.      Have tried with a number of WD20EZRZ hard disks, same issue
5.      Have raised issue to paragon, who provided gpt_loader, but they don’t support gpt_loader any more.
6.      Also issue was raised to WD, they say that since diag tool does not find any issue, this is XP issue.
7.      I have not seen similar issue with 2TB internal hard disk WD20EZRZ in WIN7.
8.      Machine checked with malwarebytes and  other anti virus programs, no issue found.
9.      HW:  Dell optiplex 745 XP SP3

Any suggestions?
Br
Peter
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I have two locations. Both locations currently have DSL connection from the ISP to a Zyxel VMG4325-B10A.  My project is to allow VPN connection between the two locations.  I have ZyXel USG20W-VPN for both locations.  
Question 1: The ZyXel VMG4325-B10a on allows connections for RJ11 connection.  Thus, to make the configuration work the ZyXwl VMG4325-B10A will need to be configured in Bridge Mode.  I need some direction on the steps to configure the VMG4325-B10A in Bridge Mode (right now, I cannot ping the ZyXel USG20W when it is connected inside the network, I am thinking ICMP is not activated)
Question 2: Does anyone know how I can accomplish this task without shutting down the network?  
Question 3: Has anyone had experience setting up the ZyXel USG20W-VPN with Microsoft Active Directory?
I totally understand the best situation would be to have the ISP drop off a fiber connection with an SFP or RJ45 interface.  However, working with our ISP is a difficult task.
If anyone can send me links or help in this situation I would appreciate it.
FireCon--1-.pdf
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Networking

92K

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.