Greatest Hits

3
votes
3answers
25k views

PowerShell - Limit the search to only one OU

Ive got this cmdlet and I'd like to limit the results to only one OU: Get-ADUser -Filter {(Enabled -eq $false)} | ? { ($_.distinguishedname -notlike '*Disabled Users*') } Now Ive tried to use -...
10
votes
5answers
50k views

How can I verify that an RTMP stream URL is working?

I have been put in charge of setting up a CDN account for streaming video but am not actually running the site that will host the content. How can I test that a published RTMP URL is working? Do I ...
8
votes
2answers
31k views

nginx / php-fpm error logging

I'm trying to figure out where the PHP errors are going in my setup. I'm running nginx as the reverse proxy to PHP-FPM, but I'm not seeing the various E_NOTICE or E_WARNING messages my app is ...
6
votes
1answer
18k views

Mails sent to mail.protection.outlook.com are not being received

For few days we have been receiving complaints from many of our subscribed clients that they are not getting daily alert mails. We checked in our logs that the mails are accepted by the servers (MX ...
14
votes
7answers
46k views

VPN Connection causes DNS to use wrong DNS server

I have a Windows 7 PC on our company network (which is a member of our Active Directory). Everything works fine until I open a VPN connection to a customer's site. When I do connect, I lose network ...
12
votes
2answers
21k views

nginx: Log complete request / response with all headers?

We have an application server that sometimes hangs. We suspect it is due to a bad request from a client. Can nginx log the complete request/response (like fiddler captures) to files, so we can see ...
9
6
votes
4answers
23k views

Connecting to Remote Desktop using proxy and Remote Desktop Gateway?

I have setup a Remote Desktop Gateway server using Windows Server 2012 R2. I am using the Remote Desktop Gateway as an intermediary between to provide the remote desktop session over 443 since 3389 is ...
17
votes
5answers
45k views

KVM: Which CPU features make VMs run better?

We are using Ubuntu 12.04 with the following parameters: Dell R910 Kernel 3.2.0-25-generic #40-Ubuntu SMP x86_64 x86_64 x86_64 GNU/Linux kvm 1:84+dfsg-0ubuntu16+1.0+noroms+0ubuntu13 qemu-kvm 1.0+...
28
votes
6answers
4k views

How do I find out where the web site's code resides?

The facts: there is a website this website is accessible via www.example.org there is an EC2 instance which very likely keeps the website the server is Apache the server OS is Ubuntu I have full ...
0
votes
3answers
19k views

Problems with DL380 Gen9 Smart Array

I recently bought a ProLiant DL380 Gen9, i've had some trouble getting it up and running...I ran the ProLiant SPP ISO to uprade firmwares but felt the system became less stable as a result, at one ...
13
votes
6answers
19k views

Domain computer cannot resolve internal hostnames, but nslookup can

I have a Windows 7 computer on my domain that is behaving oddly. It is possible to ping www.google.com It can ping internal hosts using their IP address It can ping the local Domain Controller/DNS ...
10
votes
1answer
52k views

What does “net_ratelimit: 44 callbacks suppressed” mean on a linux based router?

I'm trying to tune Snort performance on a Debian based router. I was seeing stuff like: snort packet recv contents failure: No buffer space available So I upped the buffers to 8M and when that ...
8
votes
6answers
34k views

Is there any other reason for “no space left on device”?

I am using Dirvish on a Ubuntu server system for backing up a hd to an external usb 3.0 drive. Until a few days ago, everything worked fine, but now every backup fails with "no space left on device (...
13
votes
1answer
22k views

dhclient: What does “RTNETLINK answers: File exists” Mean?

I wanted to update the DHCP lease of an Amazon EC2 instance, so I executed the following command: user@host:~$ sudo dhclient Following that, the system's DHCP lease is updated successfully updated. ...
8
votes
3answers
25k views

svchost.exe -k netsvcs occupying >1GB memory

I have noticed my production server "svchost.exe -k netsvcs" is occupying >1GB ram memory, steadily, which I think is a bit excessive. This is what tasklist /svc will give me for this process: ...
1
vote
2answers
38k views

Unable to ping computers via DNS domain name

I have two desktop computers and recently set up a third computer, a Windows Server 2012 box, for which I installed DNS on it and set it up as a domain controller. I was able to successfully set up ...
7
votes
3answers
28k views

Connecting to a remote server through a VPN when the local network subnet address conflicts with a remote network

This is a Canonical Question about solving IPv4 subnet conflicts between a VPN client's local network and one across the VPN link from it. After connecting to a remote location via OpenVPN, clients ...
15
3
votes
3answers
31k views

Missing SYSVOL and NETLOGON after upgrade from Windows 2003 SBS to 2012 Standard

Today we went from Windows 2003 SBS to Windows Server 2012 Standard. I did the following: Joined 2012 server to the SBS 2003 domain Installed Active Directory Domain Services (aka dcpromo) on the ...
9
votes
3answers
24k views

Rsync command issues, owner and group permissions doesn´t change

I´m trying to set owner and group via rsync and it doesn't seem to be working. This is the command: sudo rsync -rlptDvz --owner=cmsseren --group=cmsseren /home/serena/public_html/ -e ssh root@ip:/...
17
votes
4answers
53k views

Check OpenSSH version and update instructions on FreeBSD system

On a FreeBSD system (8.1), I am looking for instructions on how to check the running version of OpenSSH and also instructions on the best way to download install an update of OpenSSH
12
votes
4answers
39k views

Cannot switch, ssh to specific user: su: cannot set user id: Resource temporarily unavailable?

/var/log/secure: su: pam_keyinit(su-l:session): Unable to change UID to 500 temporarily su: pam_keyinit(su-l:session): Unable to change UID to 500 temporarily su: pam_unix(su-l:session): session ...
7
votes
3answers
24k views

POSTFIX fatal: no SASL authentication mechanisms

I am struggling with the error above for more than 5 hours. I had tried to remove Postfix completely and I had followed the instructions of the next manual and the SASL manual in order to reinstall it....
1
vote
1answer
16k views

Google Chrome Returns err_connection_aborted, all other browsers display site

We're hosting a website with IIS on Windows Server 2012. Normally, the site is accessible from any browser. We're seeing the site intermittently accessible on campus when using Google Chrome. The ...
4
votes
2answers
26k views

Can't establish PPTP VPN windows 8/8.1

I am having an issue where I keep getting either error 800 or 807 whist trying to connect to a VPN server via PPTP on Windows 8 and 8.1 pro. The server itself is Synology's VPN Server running on a ...
-1
votes
1answer
20k views

Ports needed for the vSphere 5.5 client to connect to the vCenter

We are currently setting up a new vmware environement based on ESXi 5.5, with the virtual appliance and vSphere client. After a lot of research (maybe I didn't searched well), I couldn't manage to ...
1
vote
2answers
24k views

nslookup requests time out regardless of server - ping is fine

I've been having intermittent internet connection issues for a week or so now. I now suspect that these are just DNS issues rather than connection issues. At the moment I can ping google.co.uk no ...
0
votes
4answers
31k views

Fortigate bandwidth monitoring

I have a Fortigate 200B with Forti OS 5.0. How can I watch the total bandwidth being used by my unit both incoming and outgoing? Thanks
3
votes
5answers
26k views

Server 2012 R2 Run Program from Task Scheduler not running program

I have a scheduled task that I am trying to run a program (a DB backup program). For reasons unknown I am unable to actually get the program to run, even though the task log says everything was run ...
4
votes
2answers
31k views

Apache URL rewriting in reverse proxy

I'm deploying Apache in front of a Karaf-hosted application (Apache and Karaf are on separate servers). I want Apache to operate as a reverse proxy and also to hide part of the URL. The URL to get ...
4
votes
4answers
66k views

Replacement for NewSID when working with Windows 7?

Is there a replacement for the old SysInternals NewSID utility that will work for Windows 7? I found out the hard way that NewSID will totally hose a Windows 7 setup (BSOD on reboot). Apparently the ...
4
votes
3answers
33k views

Activating MS Office 2013 Standard via KMS running on the same server

Given: Microsoft Windows Server 2008 R2 Enterprise 64-bit, all the latest security updates applied. KMS service set up and running, all the recommended updates applied (to handle possible activation ...
2
votes
3answers
24k views

kinit: Cannot contact any KDC for realm 'UBUNTU' while getting initial credentials

I am installing Kerberos5-1.12.1 on ubuntu machine with these instructions. Whenever i am trying to do : kinit user1 I am facing an error: kinit: Cannot contact any KDC for realm 'UBUNTU' while ...
0
votes
4answers
21k views

SMTP don't work when try to send mail from mail client

Mail server works fine when send mail from server, but when I use some mail client it not work. I found this in logs: Jul 12 19:45:04 tvsite postfix/smtpd[3356]: warning: hostname adsl-bb29-l44 does ...
1
vote
5answers
31k views

Outlook 2010 fails to connect to Exchange 2013

I have an Exchange Server 2013 and I am trying to connect using Outlook 2010. Both are running on the same server. The Outlook installation is just for testing mailboxes. Outlook first refused to ...
11
votes
1answer
30k views

VLAN tags not shown in packet capture (Linux) via tcpdump

I am adding a tagged VLAN onto eth0: #ip link add link eth0 name eth0.20 type vlan id 20 This results in: #ip link 2: eth0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc ...
2
votes
1answer
18k views

Change user password on other domain command line

I'd like to change user's password using cmd.exe on domain account. I tried net user user_name * /domain but it doesn't work, because my user is on another domain. How can I specify, to which ...
7
votes
1answer
22k views

How to resolve problems with spf / softfail?

I'm having problems with Google rejecting mail because of SPF problems. I thought I had this fixed, but evidently not... The mail is being sent from a Drupal site running mimemail. A message that ...
9
votes
4answers
25k views

Can you change the virtual NIC type after building a VM?

When building a VM, you can select which virtual device type you would like a vNIC to be (E1000, VMXNET3, etc). After the VM is created, can you change the type of vNIC in use on a given connection (...
1
vote
1answer
15k views

SChannel errors after enabling SSL on a Windows Server 2012 R2

I have a Windows Server 2012 R2 instance on Azure. For a new website I have ordered a certificate by GlobalSign. After getting the certificates from them I have completed the certificate request in ...
4
votes
4answers
22k views

PBIS Open AD authentication stops working on ubuntu with errors: “user accout has expired” and “is your account locked?”

We have been using PowerBroker Identity Services Open to authenticate active directory users from ubuntu hosts successfully for six months. Recently AD authentication stopped working on several ...
35
votes
8answers
26k views

Should I expose my Active Directory to the public Internet for remote users?

I have a client whose workforce is comprised entirely of remote employees using a mix of Apple and Windows 7 PCs/laptops. The users don't authenticate against a domain at the moment, but the ...
1
vote
1answer
31k views

Adding alias to an Office 365 mailbox with dirsync

We've recently migrated to Office 365 with a new Active Directory structure and as part of this the naming convention for all the e-mail addresses has changed. This isn't a problem for most users, but ...
20
votes
1answer
61k views

CNAME record/alias in windows hosts file?

Is it possible to enter some sort of CNAME record or alias in the windows hosts file (C:\Windows\System32\drivers\etc\hosts)? Basically I want to forward all requests made to host A to host B, ...
0
votes
3answers
18k views

Root Directory /var/www/html : Apach2 on Ubuntu 14.04

I just set up the apache2/mysql server to play around with. But I found the something different than what I saw before. The root directory is pointed to /var/www/html/. I checked the /etc/apache2/...
1
vote
1answer
30k views

How to install SSL Certificate on Windows Server 2012 R2 without IIS

I have a Windows Server 2012 R2 server running SQL Server 2012 with Reporting Services. I want to be able to use the Reporting Services Report Manager over HTTPS instead of the default HTTP. How can ...
1
vote
3answers
29k views

Export/Import DNS Entries - Windows Server 2008 R2

I have a Windows 2008 R2 Server, Its primary role is to be a DNS server. I cant find how to import the previously "exported" DNS entries. To export I selected the server, clicked on Action->...
7
votes
4answers
40k views

Force the DHCP server to renew the IP address of a client machine, without doing anything in client machine

I would like to know, if there is a way I could force the DHCP server to renew the IP address of a client machine instantly, without me going to the client machine? In fact, imagine, I don't have ...
6
votes
2answers
18k views

“SSL input filter read failed” Apache and 443

I have a little problem with my apache conf. When I read the error log, here is what I can see: [client xxx.xxx.xx.xx] AH01964: Connection to child 1 established (server www.mywebsite.com:443) [...
15
votes
3answers
24k views

How to disable SSLv2 or SSLv3?

Anyone know how to disable certain SSL versions and only enable others in IIS 7.5?
0
votes
1answer
10k views

after install ssl certificate fatal bind xxx.xxx.xxx.xx port 587 already in use

I have an Ubuntu 12.04 server setup with Virtualmin/Webmin latest version using a self-signed certificate generated during installation working fine for more than a year without any problem. This week ...