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.

Share tech news, updates, or what's on your mind.

Sign up to Post

Hello

I'm having an issue with setting up an IIS FTP server (on a 2008R2 box). I have succeeded in setting up the server, users, publish the directory, setup NAT on the firewall. Things are looking pretty much ok but I am struggling at this point:

 220 Microsoft FTP Service
AUTH TLS
234 AUTH command ok. Expecting TLS Negotiation.
USER username
331 Password required for username.
PASS *****************
230 User logged in.
PBSZ 0
200 PBSZ command successful.
PROT P
200 PROT command successful.
FEAT
211-Extended features supported:
 LANG EN*
 UTF8
 AUTH TLS;TLS-C;SSL;TLS-P;
 PBSZ
 PROT C;P;
 CCC
 HOST
 SIZE
 MDTM
 REST STREAM
211 END
OPTS UTF8 ON
200 OPTS UTF8 command successful - UTF8 encoding now ON.
SYST
215 Windows_NT
PWD
257 "/" is current directory.
CWD /
250 CWD command successful.
TYPE A
200 Type set to A.
PORT 172,16,101,102,208,219
501 Server cannot accept argument.
CWD /
250 CWD command successful.
TYPE A
200 Type set to A.
PORT 172,16,101,102,208,222
501 Server cannot accept argument.

Open in new window


I guess this is somehow linked to passive FTP mode but
  • it happens even if I explicitly request active mode only
  • I have defined the passive ports in the "FTP firewall support" tab and NAT-ed them to the correct internal IP
  • this works fine if connecting locally (localhost) but not from LAN no WAN

I'm sure it is a "classic" one (seeing lots of post googling this) but can't really figure it out.

Any advice most appreciated
0
Bootstrap 4: Exploring New Features
LVL 12
Bootstrap 4: Exploring New Features

Learn how to use and navigate the new features included in Bootstrap 4, the most popular HTML, CSS, and JavaScript framework for developing responsive, mobile-first websites.

I had a colleague recently turn on Distributed File-system in our organisation in order to replicate company documents.

Could this also be used to replicate printers, and also could this be the cause of printers disappearing on our network?
0
Our Windows 7 workstations are not authentication wirelessly. When we ask users to hardwire in they connect fine.
Windows 8 and Windows 10 are fine.

My teammate confirm certificate is not expired and from what we were told by another group no changes were made to Group Policies for WIndows 7 OU

Please see logs I am seeing on Windows 7 PC
Skipping: Eap method DLL path validation failed. Error: typeId=25, authorId=9, vendorId=0, vendorType=0
Skipping: Eap method DLL path validation failed. Error: typeId=17, authorId=9, vendorId=0, vendorType=0
Skipping: Eap method DLL path validation failed. Error: typeId=43, authorId=9, vendorId=0, vendorType=0

On the Raduis Server

Client Machine:
      Security ID:                  NULL SID
      Account Name:                  -
      Fully Qualified Account Name:      -
      OS-Version:                  -
      Called Station Identifier:            8A-15-14-8C-60-B0: test_wireless
      Calling Station Identifier:            18-5E-0F-A6-5C-A2

NAS:
      NAS IPv4 Address:            10.2.10.15
      NAS IPv6 Address:            -
      NAS Identifier:                  -
      NAS Port-Type:                  Wireless - IEEE 802.11
      NAS Port:                  5

RADIUS Client:
      Client Friendly Name:            ap--mgmt.example.com
      Client IP Address:                  10.2.10.15

Authentication Details:
      Connection Request Policy Name:      Use Windows authentication for all users
      Network Policy Name:            wireless
      Authentication Provider:            Windows
      Authentication Server:            SVexample.test.com
      Authentication Type:            PEAP
      EAP Type:                  -
      Account Session Identifier:            34323537373032463445343838424242
      Logging Results:      …
0
I work for a company called CompanyA and we had a Ubiquiti EdgeRouter and I'm replacing it with a Draytek 2960, the internet is provided via a Leased Line with 20 static public IP Addresses.  There is a company in the same building as us called CompanyB and they share our leased line, previously the leased line went direct into the EdgeRouter and companyB's router plugged into one of the LAN ports on the EdgeRouter and this worked fine, I cant seem to replicate the setup on the Draytek to get internet traffic to CompanyB's router.  CompanyB have a Fortinet router which Im not familiar with.  I have a cable running from LAN2 on the Draytek into WAN1 on the Fortinet router, the Fortinet router on the WAN1 interface has a static address set of 50.50.50.50/255.255.255.248 which hasnt been changed since it worked with the EdgeRouter  The guy who originally setup the connection gave me the following notes
Gateway IP for CompanyB: 50.50.50.49
Usable IP Range: 50.50.50.50-50.50.50.54

All of the 20 IP Addresses including the above IP's have been added to the router WAN setup as aliases.

As you can tell im using fake IP addresses but you get the idea.

Please Help!!
0
Hello Experts - I have a question about making an MX record change.  We are using Barracuda's email filtering service and they are asking that our MX records be pointed to the following addresses:

Primary: d35456a.ess.barracudanetworks.com
Backup: d35456b.ess.barracudanetworks.com

Currently both MX1 and MX2 point to individual Barracuda IP addresses.  The records are hosted with Network Solutions.  When I sign in, I navigate to the Advanced DNS section to edit but the form requires a numerical IP address and won't allow me to enter the addresses above.  I feel like I'm missing something here, any ideas?
0
I received A pop up message of microsoft exchange asking to put my credential after changing my AD network password this morning and  before logging into Microsoft Outlook.
we have on premise AD and AD users are synced through AAD sync and mailbox es in offic e365

we have outlook through offic e365 proplus installed as click to run with shared computer licensing.

any reason why outlook prompted for password
0
I am running a Server 2012 Hyper-V cluster on identical hardware that ran well for years. Recently, one of the OS'es became corrupt and the server had to be rebuilt. We named the two server in the cluster VM1 and VM2 and they use a FC SAN as CSV. I had to rebuild VM2. Now the cluster IP address is showing as offline- the rebuild was in-place, and I kept the same IP addresses and configurations so the servers are back to being identical. The error code I get in Failover Cluster Manager is "0x80071397 - The operation failed because either the specified cluster node is not the owner of the resource, or the node is not a possible owner of the resource."

The IP address properties sheet shows both VM1 and VM2 checked. I also used the "Get-ClusterOwnerNode" cmdlet to verify the same thing. Any ideas?
0
What are the least expensive laptop internet connection/tethering service solutions so that whenever I need my Windows 10 laptop to access the internet (and don't have a Wi-Fi connection) I will be able to access the internet using my tethering solution?
0
Haven’t had to deal with this in a while but have a client we handle LAN tasks for. Their current web/ imap / pop mail host lowered mailbox limits to unusable numbers.

They don’t want to go to o365.

I’ve used hostgator reseller account for years but in thinking of moving them there I remember how we have wanted to get away from hostgator for so long. Their service / support works just enough to keep my inertia on moving at bay.

I know HG (and many other hosts) are part of a much larger holding company.

Is there any good hosting company you’d recommend? Or warn about?
0
Cisco 5520 Wireless Lan Controller unable to connect access point using wired connection using POE injector using CDP I can see access point but unable to have it show up in access point list.  The access point is directly connected to WLC, with no switch or router but both AP and WLC are using ip in same subnet /24.
0
Learn SQL Server Core 2016
LVL 12
Learn 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.

In my current Perl script I want to modify a string that identifies my database RAC zone cluster.  Currently using:  nslookup `hostname` to get my fully qualified hostname.  However, this is not the name I need to use for my network administration HOST string in my "tnsnames.ora" file.  So, please help me modify this string:
   
       An example   dbserver01.dpsn.local  -->  need this string to be  dbzonecluster.01.dpsn.local

In general I will always want to replace what comes before the first '.' character in the file with some predefined string.  Can't figure out how Perl function substr would help, or something like  $myZoneClusterName =~ s/xxxxx/yyyy/g
0
CISCO 4321
I have connected to the cisco via putty and configured passwords, interface gigabiteither 0, and also 0/0/0. I can ping it on the management port and on 0/0/0, but I cannot access the gui via https://192.168.1.1.

This Guide does not tell much at all and I have not found much on google either. Can someone please point me in the right direction. This is router is not in production.

Current configuration : 1429 bytes
!
! Last configuration change at 20:54:05 UTC Thu Sep 13 2018
!
version 15.5
service timestamps debug datetime msec
service timestamps log datetime msec
no platform punt-keepalive disable-kernel-core
!
hostname cisco4321
!
boot-start-marker
boot-end-marker
!
!
vrf definition Mgmt-intf
 !
 address-family ipv4
 exit-address-family
 !
 address-family ipv6
 exit-address-family

!
no aaa new-model
no process cpu autoprofile hog
!
!
!
!
!
!
!
!
!
!
!



!
!
!
!
!
!
!
!
!
!
subscriber templating
!
multilink bundle-name authenticated
!
!
!
!
license udi pid ISR4321/K9 sn FDO21062QE7
!
spanning-tree extend system-id
!
!
redundancy
 mode none
!
!
!
!
!
vlan internal allocation policy ascending
no cdp run
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface GigabitEthernet0/0/0
 no ip address
 shutdown
 negotiation auto
!
interface GigabitEthernet0/0/1
 no ip 

Open in new window

0
Hi All,

We have inherited a client who have a very basic network setup consisting of a Windows 2012 Standard server which is acting as their DHCP / DNS. It is on the 192.168.100.x range.

They would like to allow over 250 users to be able to connect to the network. However as you can see their range will only allow 250 users before the DHCP leases run out.

We havent had to do anything like this before as we only look after very small companies.


Would someone mind letting me know how we can go about editing their current dhcp to allow more users to connect? can i simply change the lease range to 192.168.x.x?

The gateway is currently 192.168.100.254

Their subnet is currently 255.255.255.0


Thanks in advance for any responses
0
Hello,
i have pfsens with snot package ... and i enabled on wan and lan wit block mode
i add some alerts so suppress lists for wan and lan ,,, already create two file one for wan and the second for lan
some alerts that is in suppress list is going to blocked ! so where is the problem ?
0
Dear Wizards, I'm testing the owncloud in Ubuntu 14 but got these troubles:
1. the LDAP features are unavailable, I tried to reboot server but it did not help, we had php5-ldap packages

oc2.PNG
oc1.PNG

2. Can we edit documents online like GoogleDrive?

Can anyone help please? Many thanks!
0
We are testing and deploying a Windows 2016 DC with a separate Windows 2016 Exchange server 2016.

The Windows DC has the Windows Server Essentials role installed for our external people. The DC is working fine and we can remote connect to RWW no problem

The issue is with our Exchange Server. We have installed everything OK - we can send and receive email through exchange to internal and external contacts.
The problem we are having is accessing OWA from outside our network - which is a critical part of the deployment.

Internally we can access web-mail with the URL https://kits-exchange/owa however we cannot reach Exchange 2016 OWA from outside network.

Looking at the issue we can see that our DC's IIS is hosting the default website giving us access to RWW via port 443 however on our Exchange server this is hosting its own default website and Exchange-Backend website on its IIS - this is on port 444 and 81

Question is - How do we reach OWA / webmail from outside out domain network.

Additional Info:
We have a configured Domain Name that points to the fixed IP of the broadband connection
We have a valid SSL Certificate bound to our DC for HTTPS remote access
We have followed the principle the Exchange should be installed on a separate server
We are IT Proficient and understand IT!

Thank you
Andy
0
We require to identify what SMB version is being used on all client machines on the network (Win 7 and 10).

A PowerShell script to extract the SMB version of all clients (single domain) and place the output into a CSV.
0
I have 2 windows 2008r2 servers on a windows 2012r2 domain. For an application to run on ServerA a path must be mapped to ServerB such as \\ServerB\Folder\Folder2
The App stopped working today and I can no longer map the path even manually by using UNC path. I tried to manually map a drive letter just as a test but I cannot map anything from ServerA to ServerB. They can PING each other. ServerA can map to any other server in our network. ServerB can map to ServerA. I tried mapping from ServerA to ServerB by IP address but the connection still gets rejected. If I do a NET USE on ServerA I do not see a connection. I have tried rebooting ServerA several times without success. I cannot reboot ServerB at this time. I am running out of ideas. I tried a NETSTAT on ServerB and do not see any incoming connection from ServerA. i am running out of ideas....oh yes I did a FlushDNS on both....any other suggestions? This has worked for years and it only seems to be from ServerA to ServerB....I talked to our network team and no ports were blocked or firewall changes today
0
How can we use the secondary Citrix NetScaler Server, in an H.A. pair to safely test out new configurations before the same changes are propagated to the other NetScaler?

We have 2 x version 12.0 Citrix NetScaler Servers in our environment.  They both are setup for auto-sync and propagation by default; but according to websites:

- https://support.citrix.com/article/CTX124439 
- https://docs.citrix.com/zh-cn/netscaler/11/system/high-availability-introduction/configuring-command-propagation-high-availability.html

There are commands to that can be executed to turn the HA Sync and HA Propagation off and then back on later.  At my company we would like to test out a 2 factor authentication option (during a planned maintenance window) and see how that works before it is available for all of the users.  I am thinking of doing the following:

1.  Enable the 2 factor authentication settings on the Authentication server.
       a.  Whatever it may be, that is a separate topic from this question.

2.  Then after the Authentication server is ready, disable auto-sync and auto-propagation on the NetScaler HA-Pair.

3.  Then configure the secondary NetScaler to work with the 2nd factor Authentication server.
        a.  Then plan a maintenance window to temporarily make the secondary NetScaler Server into the new primary NetScaler Server.
        b.  When I fail over the primary server, the secondary server will then become the new 'primary' server …
0
Powerful Yet Easy-to-Use Network Monitoring
Powerful Yet Easy-to-Use Network Monitoring

Identify excessive bandwidth utilization or unexpected application traffic with SolarWinds Bandwidth Analyzer Pack.

Hi,

Can EEs suggest bk software? It will be an onsite bk to a different server in the same network.  thanks
0
My registrar droa.com (aka name juice) is offline. I tried to call their support but the answering system won't accept any more messages. I'd like to transfer the domain but the transfers require an authorization code which I can't get because their sites are down. Please help!!!
0
Up to now, we have been running a fairly large peer-to-peer network of almost 100% Windows 10 Pro workstations with ONLY IPv4 enabled on the workstation NICs.  (There are 3 interconnected subnets with no name service shared between them).  Disabling IPv6 was done historically because using IPv6 in addition to IPv4 caused problems.  

Yet, more often now, Experts advise enabling IPv6.  Going along seemed perhaps a good idea.  And, in the sense of "if it ain't broke don't fix it", the hoped-for fix was to fix the Network list of computers in each distinct subnet - which has become more flaky/unreliable.  The experience with this was mixed as not all computers were switched to IPv6; i.e. not all subnets' workstations had IPv6 enabled.

We have since solved the Network computer name list problem.  So, there's a decision to make:
- "if it ain't broke, don't fix it" says to leave only IPv4 enabled.
- Expert advice says to also enable IPv6.  

It surely appears that "IPV6" in Windows is NOT simply an addressing scheme but also carries with it other things - things which I'm unable to list, but one hopes.

I have not had any trouble that I know of in enabling IPv6.  Yet, when one of the senior folks enables it on his own workstation, the network connectivity dies.  This problem survives a reboot and, yes, IPv4 remains enabled.

I believe it's bad practice to have a mix of settings in a network.  So if someone can suggest a fix to the network connectivity problem
0
Odd issue with Teacher laptop:

I have a Lenovo E570 laptop that will connect to our secure network but will not get an IP address (it gets an APIPA) in the teacher's classroom.  When you walk around the corner, it connects just fine.  The students can connect without issue while in the classroom but they are using Lenovo 11e Chromebooks.  Another teacher says she has trouble with internet on her device when she goes into that room also.  I reset the network adapter on her computer.  I deleted the driver and added it back.  I entered a static address and made a reservation for it.  She still can't connect when she connects the first time in the room.  However, if I take the device walk out of the room about ten feet it will connect and will stay connected (and she is connected to that WAP in her room where it works fine then).  If I disconnect and reconnect in the room though, it doesn't work.  I'm at a loss.  I've looked at the port for the AP and it has the appropriate VLANs.  The students connect to the same secure network anyway so I don't know why they would have no problem while she can't get an address.  Anyone seen a problem like this?
0
Recently our Buffalo Linkstation NAS drive is showing empty folders after PC restart, the only fix seems to be to disconnect then re-map the network shares.

Buffalo has suggested using the IP instead of host name but the hasn't helped.

Issue occurs on Windows 7 and 10, began about 2 weeks ago. No prompt to enter username/password or error message.

Any suggestions most welcome.
0
Hello,

I am looking for help to configure Juniper SSG5 VPN. we have 1 locally hosted website. we want our remote laptop user to access this website when they are out of office. our lan IP is 192.168.0.1 and server IP is 192.168.0.15 Firewall local IP is 192.168.0.8. Firewall is direct connected with service provider WAN IP.
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.