Greatest Hits

19
votes
6answers
24k views

2008 R2 Terminal Server: “Insufficient system resources exist to complete the requested service”

I'm working with an unhealthy Windows 2008 R2 Terminal Server configured in a vSphere environment. It currently has 4 vCPUs and 32GB RAM. No overcommitment. The concurrent user count on this server ...
1
vote
1answer
27k 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
27k 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 ...
6
votes
1answer
23k views

Openvpn routing for lan to lan through tun

I am trying to setup an OpenVPN tun to connect two lan's The open vpn connection is up and working but there is a problem with my routing or nat or something. What I need is an example of what a ...
3
votes
4answers
23k views

OpenVPN and Routing and IPtables

GOAL: Access internal network devices and browse web via the tunnel. 192.168.2.x = internal network 192.168.3.x = openvpn server 192.168.2.111 = openvpn server on internal network [root@openvpn ~]# ...
2
votes
1answer
17k views

Let users install software without local administrator rights on domain

I manage the network of a small company. As I'm not always in the office it is a wish from the employees to be able to install software without having to go to me. My predecessor set it up that ...
0
votes
4answers
19k views

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

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 ...
6
votes
2answers
34k views

Converting .cer to .pem?

I have zero knowledge on certificates . I searched on internet and found few , but none of them helped me in my case. I am on Red Hat Enterprise Linux ES release 4 (Nahant Update 9) I am trying to ...
2
votes
2answers
16k views

Can't allow users to log in via SSH (Bash, OpenSSH, CentOS 6.5)

I am running a CentOS 6.5 machine remotely via SSH. I use RSA keys and have disabled password authentication. The problem that I am having is that whenever I add a new user and want him/her to log in ...
6
votes
3answers
17k views

Increasing ulimit on CentOS

We have a CentOS box that I'm trying to increase the max number of files that a user can have open. Currently when I run ulimit -Sn I get 1024 and ulimit -Hn gives 4096. I need that number up around ...
21
votes
1answer
19k views

How does vm.overcommit_memory work?

When I use the default settings: vm.overcommit_memory = 0 vm.overcommit_ratio = 50 I can read these values from /proc/meminfo file: CommitLimit: 2609604 kB Committed_AS: 1579976 kB But ...
5
votes
2answers
16k 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) ...
6
votes
3answers
35k views

How do you apply proxy settings per computer instead of per user?

So far, I've used a user group policy object utilizing Internet Explorer maintenance to set a proxy for the user in IE. We have now deployed the Enterprise Client (EC) starter group policy to our ...
1
vote
1answer
22k views

Install 32- or 64-bit Crystal Reports runtime on 64-bit server?

To run, our VB.NET application needs the runtime files Crystal Reports, developer version for Microsoft Visual Studio. (Support Pack SP8) We are installing our application on Windows Server 2012 R2 ...
42
votes
8answers
17k views

Windows TCP Window Scaling Hitting plateau too early

Scenario: We have a number of Windows clients regularly uploading large files (FTP/SVN/HTTP PUT/SCP) to Linux servers that are ~100-160ms away. We have 1Gbit/s synchronous bandwidth at the office and ...
2
votes
4answers
21k views

Nothing appearing in kibana dashboard

I have installed Logstash ElasticSearch Kibana on an EC2 instance. I can visit http://example.com:9200 Here I get { "status" : 200, "name" : "Aleta Ogord", "version" : { "number" : ...
1
vote
1answer
12k 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 ...
0
votes
1answer
13k views

Why can't diskpart clean my disk?

I have a Hyper-V Core Server 2012 R2 with the following disks: Disk 0: SSD C:\SSD (mount point to Disk 1) Disk 1: HDD C:\ (boot drive) Disk 2: RAID-5 (not mounted) Disk 3: RAID-0 ...
3
votes
3answers
16k views

Has Windows Server Backup's Disk Space Management Changed in Server 2012?

Summary I have a Server 2012 (not R2) Hyper-V Host server using Windows Server Backup (WSB) to back up about 670 GB of data to three 1 TB USB hard drives, rotated weekly. The server was installed ...
3
votes
1answer
17k views

How can I recover or restore an Office 365 mailbox of a deleted user?

We have deleted a user account (and subsequently their Exchange Online mailbox) in our Office 365 organization. We didn't feel there was a need to export their Outlook OST contents to a PST file for ...
2
votes
1answer
22k views

Routing from mikrotik two IP addresses to same gateway

I have 2 static addreses (a.b.c.72/24 and a.b.c.128/24) on gateway1 and gateway2 interfaces. ISP have one gateway a.b.c.1 . I can use a.b.c.72 only on gateway1, a.b.c.128 only on gateway2. How to ...
3
votes
3answers
25k views

Gitlab not working with SSH Keys

I am having issues with Gitlab. I used the following guide to install and configure Gitlab https://github.com/gitlabhq/gitlab-recipes/blob/master/install/centos/README.md. The installation seemed to ...
10
votes
3answers
23k views

Understanding the output of openssl s_client

Ever since our email provider changed their SSL certificate, a POP3 client based on mono refuses to connect to their secure POP server to download emails. Other clients do not have an issue; e.g. ...
0
votes
1answer
4k views

Installing apache: no VCRUNTIME140.dll despite installing VC_redist.x86.exe

I installed VC_redist.x86.exe as instructed by the Apache docs, but when I run httpd.exe -k install it gives me the error: this program can't start because vcruntime140.dll is missing from your ...
2
votes
1answer
15k 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 ...
2
votes
3answers
14k views

Administrator can access all mailboxes - how can I stop it?

At our organisation the DOMAIN\Administrator account can access all mailboxes i.e. log in to Outlook Web Access as DOMAIN\Administrator and then open another mailbox and that users mailbox appears. I ...
5
votes
5answers
32k views

Find out what high CPU usage apache process is actually doing?

Currently having a few issues with our server where, intermittently, we seem to get apache processes which just run and run, taking up 100% CPU. When running top, we see the following: PID USER ...
4
votes
2answers
22k views

Downgrade IE11 on Windows 2012 Server R2

I have setup a test environment with Windows 2012 Server R2 Std, using RDS/RemoteFX. Anyways, the server is running fine but I need to use IE 10 and not IE 11 on the server itself. I have a web ...
4
votes
1answer
17k views

why adding Expire-Header to static files in nginX does not work

I have a single server block where my site resides in. Inside of that block I've added a location block as below: server { ... location ~* \.(?:ico|css|js|gif|jpe?g|png)$ { expires 30d; ...
0
votes
2answers
8k views

'openssl verify' outputs 'unable to get local issuer certificate'

In /etc/ssl, when I do sudo openssl verify mywebsite.pem I get a message stating mywebsite.pem: OU = GT46830179, OU = See www.rapidssl.com/resources/cps (c)15, OU = Domain Control Validated - ...
1
vote
1answer
16k views

504 Gateway timeout / 502 Bad gateway after installing php curl - server nginx

I have (well had) a working server with nginx on board. A server (dedicated) was only used to host a drupal site. Recently we decided to host also a magento store on it and started preparation. Since ...
5
votes
1answer
20k views

Installing Oracle 32bit and 64bit client on the same machine

So I need to have both the 32bit and 64bit clients for Oracle 11g coexist on the same machine. I have installed both together before, but there are many issues where applications that need to use the ...
2
votes
2answers
18k views

Buffer I/O error on device (sata drive)

I keep getting these messages in one of my servers kernel logs (which is responsible for file operations). I wonder if anybody knows how serious are these issues. I cannot use smartmontools because ...
7
votes
2answers
11k views

Windows Updates taking a long time to install

I manage a WSUS server for a large number of servers in a shared environment. Recently I noticed that despite the scheduled install time configured via the local gpo of many servers, they were not ...
15
votes
3answers
12k views

OpenSSH: Difference between internal-sftp and sftp-server

Why are there two ways to setup SFTP with OpenSSH and when to use which? Is there any difference between them? I mean the first one is using a lib from OpenSSH and the second one says "use the ...
7
6
votes
1answer
37k views

Event 36888: The following fatal alert was generated: 10. The internal error state is 1203

I've searched online, but am unable to find any information; why this error is occurring? It has flooded my Event Viewer: with an interval of 1 minute, this Error keeps popping up. (i.e. the ...
0
votes
2answers
17k views

How to install SVN client version 1.8 on CentOS/RHEL 6?

I'm trying to install the SVN client version 1.8 on CentOS 6. I'm using the description on http://tecadmin.net/install-subversion-1-8-on-centos-rhel/ All activities are running successful without ...
1
vote
1answer
12k views

SFTP Error - Couldn't read packet: Connection reset by peer

I try to configure SFTP on Centos 7, on my first server it works perfectly, but on my second server when I try to connect me with : sftp USERNAME@serveripaddress I have this error : Could not read ...
3
4
votes
2answers
12k views

Failed to connect to the System Event Notification Service

Several end-users try and log into their Windows 7 machine, they get a message, "failed to connect to the windows notification service" and it goes to a black screen and never actually loads their ...
6
votes
1answer
14k views

How to switch between TLS 1.0 and SSL 3.0 at Java/JRE level?

I am using java 1.6. I have setup my tomcat as my ssl enabled server. And i have setup a ssl enabled client (java code). When i do a communication from my client to server. In java ssl dump in tomcat ...
-1
votes
2answers
16k views

Telnet client on redhat linux

I am trying to install a telnet client in Red hat linux server which doesn't have internet connectivity. Red hat linux version less /etc/redhat-release Red Hat Enterprise Linux Server release 6.4 ...
6
votes
1answer
10k views

Is there a way to disable “check online for updates from windows update” in windows update settings?

I have configured WSUS server in order to preserve bandwith in the network wile keeping essential updates turned on using that WSUS. Intranet WSUS server pointing to client pc and other settings are ...
1
vote
2answers
17k views

Network drive map through GPO not working on Windows 2012 (Neither via logon script nor drive maps)

Although I thought this would be easy I am unable to automatically connect to a network drive via GPO. I tried through a batch file on (User Configuration / Policies / Windows Settings / Script / ...
4
votes
1answer
15k views

LDAP authentication on CentOS 7

After upgrading to CentOS 7 it's no longer possible to login via LDAP. With CentOS 6 I used the package pam_ldap which worked fine, but now pam_ldap is no longer available for the new version of ...
0
votes
1answer
11k views

MikroTik - can't access webfig from external / can't SSH into router from external ip

Ok, here's the deal. Let's say that my public facing IP is 10.0.01. I can't webfig into 10.0.01 from external and can't SSH into mikrotik router from external IP. I can do it if I am physically ...
1
vote
3answers
21k views

How to connect an ODBC DSN to nondefault SQL Server instance on default port?

We are migrating an SQL Server 2000 database on one server to SQL Server 2008 R2 on another server. The client application use a User DSN to connect directly to the SQL Server on the internet. I have ...
4
votes
2answers
16k views

Force Windows DHCP to Update DNS for All Current Leases

Is there are way to force Windows 2008R2 DHCP Server to update all DNS entries for all current leases? (Guess the server-side equivalent of ipconfig /registerdns) We had a configuration issue with ...
0
votes
1answer
9k views

Trouble Connecting with Cisco VPN client reason 412

I'm using Windows 8.1 trying to connect to an Office using Cisco VPN. I try to connect and after a few seconds I get this: The Secure VPN connection terminated locally by the client reason 412: ...
3
votes
3answers
5k views

sendmail can not deliver to gmail - IPv6 sending guidelines regarding PTR records not met

I am having trouble in delivering mail to google from a fresh sendmail install on ubuntu 14.04. The DNS-records seem to be fine for the ip. Something else must be wrong. Sending mail from command ...
0
votes
2answers
10k views

How to grant Full Access and Send on Behalf permissions in Exchange 2013?

We have migrated from Exchange 2010 to Exchange 2013. We have multiple shared mailboxes and we have always granted users Full Access and Send on Behalf permission so that if a shared mailbox receives ...