I write script that need to be used in different active directory forests.
In one forest I am able to use simple computer names that are the same as the computer samaccountname value.
mycomputername
In another forest I have to use dnshostnames that are normally shaped like
mycomputername.some.domain.path.com
Is this a forest setting and how can I identify this?
If you want to connect to a remote host by name you must be able to resolve the name (be it a hostname or FQDN) to an IP address. Whether you can resolve a hostname or need an FQDN depends on the search domains that are configured (or not configured) on a computer's network adapter.
Related
I have an stm32H743 micro controller webserver (Cubeide LWIP) which displays a small webpage on my local LAN.
When I look at the router page, I see that all local IP's have a name associated with them.
Ethernet: COM-MID1 80:c7:55:94:12:14 192.168.1.115
STM32 00:80:e1:01:00:23 192.168.1.75
My question is - how do I change the name 'STM32' in my webserver code?
As you may imagine, there are thousands of references in my source code and I cant find the corresponding one. Where is it likely to be?
Thanks
Chris
Could it be that your router is presenting client host names from DHCP option 12?
With lwIP, you can specify the DHCP client host name by #defining the LWIP_NETIF_HOSTNAME option and then setting the hostname-field in the netif struct.
We've an AD Domain on Server 2008R2 (objectVersion 47) and running at 2003 functionality. Running commands on PowerShell v5.0.10586.117
IPSec policies and associated IP filter lists are used just for IP filtering (no encryption).
I believe all IPSec filter lists and policies are domain wide, GPOs only handle which single IPSec policy to apply?
I've used whatever google-fu I have on how to enumerate the many IPSec IP filters we have on domain/GPO and cannot get a meaningful result.
Can get Windows Firewall with Advanced Security results successfully using Get-NetFirewallRule and Show-NetFirewallRule.
Tried these commands Get-NetIPsecRule and Show-NetIPsecRule
Using their -PolicyStore argument such as:
# Always results in empty even if the GPO in question has a policy assigned.
# However am looking for all IP filters specified (which are domain wide as far as I can see)
Get-NetIPSecRule -PolicyStore domain.fqdn.com\GPO_Friendly_Name
# Fails as no GPO is specified
Get-NetIPSecRule -PolicyStore domain.fqdn.com
netsh commands so far have been on local machine or a remote machine which doesn't work for this situation.
Please feel to correct my above assumptions if they're wrong.
Any help would be appreciated! Thank you!
I'll have some computers with 8 network adapters, but only one is configured with the routed VLAN.
To identify it, I wrote a little powershell script that is a loop that assigns the IP address, test the Gateway connectivity until it founds the correct interface.
But when I try to release the IP address using enableDHCP method it will never clears the IP Address nor the Gateway.
I already tried releaseDhcpLease, for individual or for ALL interfaces, but without result ...
I've tried some tricks published here -> https://social.technet.microsoft.com/Forums/ie/en-US/94f0f04a-1669-4276-b529-e68edffd9aff/how-to-remove-default-gateway?forum=winserverpowershell
But none works..
the only effective method for to release the IP configuration was using "netsh command", for example:
netsh int ipv4 -name='Ethernet 3' addr=172.22.33.123 gateway=all
How can I do the same using Powershell + WMI commands? I may invoke "netsh", but script becomes little more complex than I desire.
Regards
I am really confused where to start from I would like to populate just two fields in network adapter setting. those two fields are preferred DNS and alternate DNS. The ip will be allocated dynamically using DHCP. At the moment I fill the two fields manually but i want a powershell script to do this. I searched over internet but its really confusing. Can some one please help
you could try with wmi :
$card=Get-WmiObject -Class Win32_NetworkAdapterConfiguration -Filter "IPEnabled=true"
$card.EnableStatic('192.168.1.2','255.255.255.0')
$carte.SetGateways('192.168.1.1')
$carte.SetDNSServerSearchOrder(#('192.168.1.10','10.10.1.8'))
I'm not sure if Powershell itself has such function but you could use netsh from Powershell like this:
netsh interface ip set dns "<connection name>" static 1.2.3.4 primary
netsh interface ip add dns "<connection name>" 1.2.3.5
You may also use WMI to adjust LAN interface settings but I think this is way easier.
Take a look at
http://blogs.technet.com/b/danstolts/archive/2012/01/31/using-powershell-to-get-or-set-networkadapterconfiguration-view-and-change-network-settings-including-dhcp-dns-ip-address-and-more-dynamic-and-static-step-by-step.aspx
he shows how to create scripts for static and dynamic, shouldn't be too dificult to adapt to your needs.
This question is in terms of a RESTful ROA (Resource-Oriented Architecture). A resource on the Web has a URL (or URI if you prefer), for instance http://myserver.com/me.jpg.
You can get a file on the local (Windows) machine like this: file:///C:/MyPictures/me.jpg. This is not exactly a "Universal" Resource Identifier; it doesn't work right if you try it on a different machine. On your machine this may be a picture of you instead of me.
Suppose I want to design an application where files can be copied to a web service. Other users on other machines can download them from the web service, but if you are using it from the original machine they are fetched from the local file system for speed.
Is there any concept of a URI that refers to a file on a particular machine if it happens to be the local machine? Is there any concept of a URI for a particular machine? IP address isn't enough; my machine's IP address is 192.168.0.102 and yours may be too.
I would like to store a number of locations for the photo as first choice, second choice etc. First choice = file:///C:/MyPictures/me.jpg but only if the local machine is the machine it came from; second choice = http://myserver.com/me.jpg.
Another way of stating the same question: this machine is unique, and the file at C://somedir/somefile.jpg is unique. Does it have a unique address? An address that would yield either "No Route to Host" or the correct file, depending on where you requested it from?
Is there any concept of a URI that
refers to a file on a particular
machine if it happens to be the local
machine?
Let's follow the logic. How is this to be determined? The URI absolutely must contain a name which uniquely identifies the machine.
Hence, your machine must be identified by a publicly registered name. You have clearly identified that a private IP address is insufficient.
So, the answer is:
Your machine must be publicly accessible (via proxy if behind a firewall) by a publicly identified name.
That name must also resolve directly to your machine (not by a firewall) if you want efficiency in the "local running case".
Setting this up is machine dependent. But assuming you're behind a NAT firewall which supports virtual server proxies...
Register the unique name in the appropriate DNS server, have it resolve to the publicly-facing IP.
Set up a virtual server on your firewall proxying back to your internal address.
Set up a web-server on your local machine.
Ensure that your local machine itself is configured (in /etc/hosts or Windows equivalent) to map that public address to your 192.168 address.
That basically does it. Impossible to imagine how anything else would. No, it's not possible for a single URI to be defined as "Try file:// in this case, or default to http://". The very definition of URI is a single scheme, as described here:
http://en.wikipedia.org/wiki/URI_scheme#Generic_syntax
You're both correct and incorrect. While two computers can have the same name or the same ip address within a network segment, they only exist within that network.
If you want to uniquely identify a file and a machine, then file://blackbeauty.mydomain.org/c:\myfile.txt is perfectly acceptable, in the sense that the blackbeauty name is "owned" by mydomain.org.
So you will need a way to address machines in FQDN if you want the URL to be resolvable.