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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 Meraki MR33 AP on a network with a windows 2012 R2 server as a AD, DHCP, and File server and a Meraki MX64 firewall. my issue is with the MR33 Wi-Fi. with the main SSID set to allow connected devices receive IPs from the DHCP and on bridge mode so they can access the drives. problem is I cant see the server or access the pre-mapped drives. I can't Ping the server either. any ideas?
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I am trying to forward ports through an OpenVPN AS server to a pfSense router that is connected as a client. I want to do this because my home internet connection is a LTE/4G connection that is NATed at the ISP’S end as well. This means I do not get a public ip and instead get the ISP’s local LAN address. This is a problem because I cannot forward any ports from the outside.

In the OpenVPN AS server config User Permissions > More Settings > DMZ I have put in the address as instructed by https://openvpn.net/vpn-server-resources/how-to-setup-dmz-in-openvpn-access-server/
 52.95.245.250:tcp/32400

The Open VPN AS server has been set up in AWS form the OpenVPN market AMI.
So the setup I am aiming for should look something like :

52.95.245.250 (AWS public IP/OVPNAS server)
          |
       (NAT)->172.16.16.2 (pfSense ovpn client IP)
                     |
                  (NAT)->192.168.1.10 (Plex server or whatever)


End goal is that 52.95.245.250:32400 should be forwarded to 192.168.1.10:32400


PROBLEM:
My issue is that while the OpenVPN AS is receiving the packets they are not being forwarded to the client.
The OpenVPN AS is getting packets and this has been confirmed via sudo tcpdump -i eth0 tcp port 32400
The pfsense router is not getting packets confirmed via tcpdump -i ovpnc3 tcp port 32400
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getting alerts on mac for Symantec every minute for days, nothing is getting attacked on my network or scanned, Symantec mentioned i need to upgrade and i did but still annoying alerts


Screen-Shot-2018-11-19-at-2.39.49-PM.pngScreen-Shot-2018-11-19-at-2.39.49-PM.pngScreen-Shot-2018-11-19-at-2.39.12-PM.pngScreen-Shot-2018-11-19-at-2.38.38-PM.png
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So have an issue with a new comcast install. They state the customer is responsible for providing a Layer 3 device to route traffic between the 2 comcast networks.  Basically comcast provides 2 networks, a layer 3 network for the point to point connection for the circuit and the customer usable IP network.  There needs to be a device installed that will route traffic between the 2.  Per their conditions "You are responsible for securing and providing a Layer 3 router capable of routing traffic between Comcast Business and your LAN. We do not consult or configure Customer Premise Equipment (CPE). The Layer 3 router should have at least two Layer 3 WAN network interfaces. One interface should face Comcast P2P (/30) and the other interface should face your LAN (/29 - /24)."

Could i Get this done with an asa, or is there something else that would be better suited and cheaper?
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We use a back end / front end Access 2016 database.  The frontend contains the forms, whereas the backend stores all of the data.  This has been working well for the past 8 months.  Two weeks ago, we upgraded from a Windows 8 file server to a Windows 2016 domain environment.  All 10 workstations were added to the domain, along with 15 new user accounts.  All of the files were successfully migrated to the new server using robocopy.  We also implemented a GPO to enable Folder redirection for the users' Desktop, Document, Favorites, Photos, Music and Videos.  We also have a GPO to map network drives.

Since the move, users are receiving the following error about once an hour when using the FrontEnd, "Your network access was interrupted".  We applied the following changes to try and rectify the issue, but nothing appears to help:
  • Turned off NIC Teaming on the server
  • Copied the database to the local C Drive on each workstation (instead of the user's desktop, which resides on the server)
  • Updated the Frontend so that it uses \\UNC instead of the Mapped drive

None of the networking hardware has changed.  All workstations are connected via RJ45 to a Netgear JGS524NA switch, and a Fortigate 60E router.  We have had no other network related complaints other than a few random instances where the office chat software could not connect to the office shat server (external server).  There have been no reports about access the share …
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Hello,
I have pfsense with multi networks
1 wan
2 lan
3 servers
both lan and servers allowed for internet
but lan to server allowed for specific ip and port
the lan can access to wan and that should be not.
what I have to enable internet for lan without access to servers ?
thanks.
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Hello Experts,

I am at a site location and they have BlueCoat Packet shapper S200 , I know the management IP and I know the port number and switch that the management IP is connected too.

I see there are other 2 ethernet cables connected to it and I want to find out their IP addresses and neighboring devices. Is there a way I can find the info from the portal? what will be the best way. I could go to the datacenter and find out but just want to know if there is in anyway I can do this from the portal.

Thanks,
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How to convert Cisco Access Point AIR-AP2802E to standalone/autonomous.
I have downloaded the firmware  from cisco site but dont know how to do that.
Is there anyone who can assist me to convert this.

Thanks
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I am trying to setup a test network at home.  I have a NetGear GS110TP 8 port Prosafe switch on which I need to create two vlans to separate network traffic.    I can not get two vlans setup on the switch which can not communicate with each other.

I go into switching/VLAN and  create two VLans   VLAN5 and VLAN10.  I then go into advanced and select vlan membership and set ports 2,3,4 to tagged for vlan5 and untagged for everything else.   I set ports 5,6,7 to to tagged for VLAN 10 and untagged for everything else.  

If i plug one  computer into each vlan i can ping between them.

I now go to Port PVID and set ports 2,3,4 to pvid 5 and ports 5,6,7 to pvid 10

I can still ping between them

I go back into Port PVID Configuration and set acceptable frame types to "VLAN only" for ports 2,3,4,5,6,7.

I can ping or communicate between the two computers anymore.   I unplug one of the computers and plug it int the same vlan as the other computer and I can not communicate between them.    

I am obviously missing something.  Any suggestions would be appreciated.
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picI have router on a stick fa0/0.10 10.10.10.1/30 on R1 and an IP address assigned to R2 f0/0 10.10.10.2/30. I am trying to understand why I cannot ping R2 from R1?

pic
R1 config:
interface FastEthernet0/0
 no ip address
 duplex full
!
interface FastEthernet0/0.10
 encapsulation dot1Q 10
 ip address 10.10.10.1 255.255.255.252
!

Open in new window


R2 config:
interface FastEthernet0/0
 ip address 10.10.10.2 255.255.255.252

Open in new window

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SBS2008 Server on a 1G network doesn't show on the network on all devices. All other computers, WIN7, WIN10, and 2012 Server Standard show all computers minus SBS2008. Any help why the SBS2008 doesn't show would be helpful. There aren't any login issues or DNS problems I'm aware of.
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My network consists of two HyperV machines HyperV1 and HyperV2
HyperV1 hosts Server1 and Exchange1
HyperV2 hosts Server 2 and Exch2
DFSR was installed and working well

Server1 OS is on a virtual disk on C drive and the data is on a virtual disk F drive
Server2 is on a virtual disk on C drive and the data is on a virtual disk F drive
 
Server2 paused with lack of disk space and has refused to start
I have seized fsmo roles using ntdsutil, and all seemed to go well

Now when I attempt to log onto a workstation, the roaming profile is not found.
When I log onto server1, and attempt to open active directory and computers I get the error "naming information cannot be located because the specified domain either does not exist or could not be contacted.  Contact your system administrator to verity that your domain is proper configured and is currently on line"
When I try change a directory server, and use the domain name, I get a Domain controller could not be contacted

I need to get server1 back up and then consider options to rebuild or restore server2, but need the network functioning
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A customer is deploying a cellular Internet solution that will provide site-to-site VPN services from remote locations back to a single central location. The cellular network will be deploying sites using dynamic IP addresses vs. fixed IP's.

This dynamic IP VPN solution can easily be handled by either Meraki or Cisco Easy VPN, whereby the clients connect to a fixed/predictable head-end device, and negotiation figures everything else out. This assumes that the head-end device is at the network edge, vs. on a DMZ segment behind another firewall layer. The problem (I believe), is that the recommended design for a VPN head-end would be behind an edge firewall. If so, then traffic from the VPN endpoints with dynamically assigned IP addresses would have to be permitted through this layer, and how would (or could) that be handled?

I think the basic questions would be:

  • Are Internet carriers that provision sites with dynamic IP addresses able to provide ranges which could be configured on edge firewalls to permit traffic sources? (Obviously, the ACL entries would also include the destination IP of the VPN firewall and be restricted to IPsec traffic.)
  • If the above isn't possible, how is this design/deployment handled?

I'm basically trying to determine if we can handle the above design (dynamic IP VPN clients connecting to a head-end beyond another firewall layer), or would this require the clients to have fixed IP's?

Thank you
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hello,
I have cisco slm224g switch
I have a windows server 2016 with Hyper-V rule
I have three vlans 2, 3
Hyper-V on port 1
adsl router on port 2
client work station on port 3
on Hyper-V I have a pfsense as vm with two network interface the first one with vlan id =2 and the second one vlan id=3 on the same interface.
I want to assign client ,Hyper-V to vlan 2 and should connect over port 1 to first interface on Hyper-V
I want to assign adsl router to vlan3 and should connect  over port 1 to second interface on Hyper-V
regarding above:
port 1 should be trunk  for vlan id 2,3
port 2 should be access to vlan 3
and port 3 should be access as vlan 2
I tried that but it's not working so what the basic configuration for that ?
thanks.
0
Anyone know how to install a network printer by IP address to an iPad?

It is a HP Laserjet Pro M402dne at 172.18.2.205 and the iPad is on the same network.....
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Issue creating trust between two forests.  I have setup forwarders between DC's in DomainA and DC's in DomainB.  All DC's can ping each other as well as the domains.  I have created reverse lookup zones on both sides for the other domain as well with PTR records for the other side.  

While in DomainB I am able to create the two way trust in that domain only.

I then move over to DomainA to create the other half of the trust but I get the following error

The New Trust Wizard cannot continue because the specified domain cannot be contacted.

Either the domain does not exist, or network or other problems are preventing connection.

All ports are opened between the networks and all firewalls are turned off.  As I said I can ping servers from both sides using FQDN as well as the domain of each side.  I am stuck and getting lost in DNS as that is where I think the issue is I just am not sure where.
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Have a new subnet that I need to allow out of an ASA 5516.  I have a general gist of what probably needs to happen. Have to  create a network object for that subnet, Then Nat and acl.  I'm just not familiar at all on how to create that acl. Hoping to get some guidance


Thanks in advance
0
Manage Bitlocker keys for enterprise network, gather the keys and log any computers offline that resulted in not getting bitlocker key for that computer

below script is not working correctly for multiple computers to be checked for online connectivity write log, get bitlocker or else write log stating computername of machine that is offline, I don't know where I went wrong with my function for the log because all thats happening is log file shows date time stamp and nothing else and I'm not getting any other keys

function log($string){
write-host $string
$timestamp =  (get-date -format dd-mm-yyyy) + "|" + (get-date -format HHMMsstt)
$computers = get-content -path '\\computername\c$\users\admin\desktop\scripts\Laptops.txt'
FOREACH($COMPUTER IN $COMPUTERS){
if(Test-Connection -ComputerName $computer -count 1 -quiet){

log "$computer is online getting bitlocker key"
manage-bde -protectors -get c: -computername $computer > "\\computername\c$\users\admin\desktop\bitlocker\$computer.txt"
}
else{
$logfile  = "\\computername\c$\users\admin\desktop\scripts\logs\devicesoffline.txt"
log "$computer is Offline"
$timestamp + " " + $string | out-file -FilePath $logfile -Append -force
      }

}
}
1
I have HP Procurve switch in my network. I have a network setup for a security camera that doesn't need to be accessible to the Internet. It seems that the camera continuously accesses the Internet for some reason. The packet has been a drop from the SonicWall since there is no rule setup for the network.  I would like to setup HP procurve switch to not forwad those request.  what is the command or rule to do that?  I have a core switch as a gateway of all network and the security camera is in VLAN.
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Hi, just bought ScreenBeamMini2 adapter.  This adapter is supposed to work with Miracast without the need of internet connection.  I need help in configuring my Windows 10 Lenovo laptop and my Galaxy S9 so that I can use this thing.  The only way I have gotten it to work with Windows 10 is when I'm connected to my Network wifi.  Once I disconnect wifi, I loose the display on the TV.  Vendor said I need to change settings in Windows to use Miracast but can't find Miracast anywhere.  Any help will be appreciated. Thanks
0
Hello Experts,

I’ve inherited the duties of SCCM administrator for our organization.  The problem with this is I don’t know anything about SCCM.  Here is a summary of our environment:
- We have two domains on one subnet.  The first domain is agency.myco.com and the second domain is mycoed.com.
- The primary SCCM server is running SCCM 2012 R2 SP1 - This server is named "MyCo-SMS2K12.agency.myco.com"
- There is one site in our SCCM environment - Site name is "SC1"
- We have a distribution point in a second domain - This server is named "MyCo-ED-SMS.mycoed.com"

When I look in SCCM Manager, I see the six servers in the mycoed.com domain.  I'm guessing they were found during a network discovery process.  However, SCCM Manager does not show these servers as having the sccm agent installed on them.  When I log into the servers, the agent is installed on them.  On the general tab of the configuration manager properties page, I see the following:
   Assigned management point:  MyCo-ED-SMS.mycoed.com
   Client certificate:  Self-Signed  
   Connection type:  Currently intranet
   Site code:  SMS:SC1
   Unique identifier:  GUID:xxxxxxxx-xxxxxx...
   Version 5.008239.1403

My questions are:

I think the servers in the mycoed.com domain communicate with the distribution/management point in that domain (which is MyCo-Ed-SMS.mycoed.com).  MyCo-ED-SMS.mycoed.com then reports in with the main SCCM server (which is MyCo-SMS2K12.agency.myco.com).  Is this correct?  If so, …
0
When you look at the "ports" HP network computers are on (and others. not just HP) it shows something like "WDP34FCD". Where and how does that port get translated to an IP address?
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Windows Server 2008 Firewall

I'd like to restrict Remote Desktop access to the server to just one external IP, and one LAN IP.

Have created an inbound rule for the RD port.

If I enter the external IP in the rule scope options and leave local IP as any, then only the external IP connects but no local IPs
can connect. If I enter the local IP specifically then it blocks access from the external IP even though its specifiied.

It appears I can do one or the other only in the rule.

How do I configure the firewall to allow RD access from one specific internal IP and one specific external IP only ?

Thank you
0
We have a Cisco Catalys 2960. We are short in ports in one office, we need to connect a UniFI 8 Port switch to the port, the port shuts down on the switch in err-disable state, due to bpduguard. so I figured I need to disable BPDU guard feature on that port. is the this the correct solutions?


It seems that the BPDU guard is enabled on all ports, How can i disable bpdugurad on that single port and not effect anything?

Will disabling BPDU on the switch cause any damages?

Thanks in advance
0
I am having a problem with Microsoft Excel not opening links to a network location.
The cell contains the following.
=SUMIFS('\\servername\9 - FOLDER\P P G, Inc\Billing Invoices and Settlement\1809\[UUT PPG-201810.xlsx]UUT Details'!$J:$J,'\\servername\9 - FOLDER\P P G, Inc\Billing Invoices and Settlement\1809\[UUT PPG-201810.xlsx]UUT Details'!$A:$A,RIGHT(A47,2),'\\servername\9 - FOLDER\P P G, Inc\Billing Invoices and Settlement\1809\[UUT PPG-201810.xlsx]UUT Details'!$D:$D,RIGHT(H1,10))

And it will not work.
However if I open the file being referenced in the link in the same excel instance, the cell contents automatically change to

'=SUMIFS('[UUT PPG-201810.xlsx]UUT Details'!$J:$J,'[UUT PPG-201810.xlsx]UUT Details'!$A:$A,RIGHT(A47,2),'[UUT PPG-201810.xlsx]UUT Details'!$D:$D,RIGHT(H1,10))

and it starts working.

Any ideas what would keep it from working with the file still closed?  Path is verified correct.  Tried full quotes on pathname.
0

Networking

93K

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.