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Is there a way to make Apache follow symlinks for the header content-type?

If I serve a file named image.jpg the header content-type is sent as image/jpeg, but if I make a softlink named image that points to image.jpg the content-type is sent as text/plain. Is there a way ...
Zequez's user avatar
  • 157
4 votes
3 answers
191 views

Do mail servers and/or spam filters care about a domain's root A record?

I have a domain which I only use for email adresses. I don't host any content there. My provider added an initial A record at the root of my domain which points to a server that delivers a ...
Albic's user avatar
  • 424
4 votes
2 answers
262 views

Does the additional load on UPS in case of grid failure amount to 100%?

The scenario is as follows: Servers are equipped with two PSU's each. One of these is connected to the UPS, the other one directly to the power grid (bypassing the UPS). I would assume that since the ...
Roman's user avatar
  • 3,927
4 votes
2 answers
12k views

Use Mikrotik as a switch and route subnets through another router

I've got the following network configuration: Comtrend 5813 FTTH Router, connected to WAN, let's say in 192.168.50.x (being .1 router's address) and a DHCP server active, giving addresses from .150 ...
F3RD3F's user avatar
  • 155
4 votes
1 answer
1k views

Get SSH fingerprint from remote server securely?

I had thought about this and my host provides out of band support, so I could simply create the key fingerprint out of band and compare it when connecting to that server from home. Is there any other ...
James l.'s user avatar
4 votes
1 answer
9k views

Windows 2016 Server on site domain join with Azure AD

My company has their entire user/group architecture in the cloud using Azure. We recently purchased a Windows 2016 Server machine and I have been asked to set it up so that we can use our Azure ...
Wazzy24's user avatar
  • 39
4 votes
2 answers
8k views

How to safely backup MySQL using VSS-based backup solutions

One of my clients is running MySQL on a Windows Server 2008 system. Their regular backups are performed using StorageCraft's ShadowCopy, which uses the VSS service to perform backups of open files. ...
Rhyven's user avatar
  • 43
4 votes
8 answers
5k views

Bash can't start a programme that's there and has all the right permissions

This is a gentoo server. There's a programme prog that can't execute. (Yes the execute permission is set) About the file $ ls prog $ ./prog bash: ./prog: No such file or directory $ file prog prog: ...
Amandasaurus's user avatar
  • 32.3k
4 votes
4 answers
2k views

DEB: "Provides:" field ignored

I need to replace a package with a custom one, which gets its own name (foo-origpackage). To allow it to be used as drop-in replacement, I added the Provides: origpackage line to the control file. apt-...
Creshal's user avatar
  • 259
4 votes
3 answers
1k views

Compiling kernel version >= 2.6.34 on CentOS 5: RAID set "ddf1_foo" was not activated?

I want to mount a Ceph FS on some CentOS 5 servers. Since the ceph-fuse failed with below errors: # ceph-fuse --no-fuse-big-writes -m 192.168.2.15:6789 /mnt/ceph/ ceph-fuse[7528]: starting ceph ...
quanta's user avatar
  • 51.8k
4 votes
2 answers
9k views

How Can I Harden the TCP/IP Stack in Windows Server 2008? [duplicate]

I would like to make sure that my Windows 2008 servers are hardened against DDOS attacks. There is a Microsoft Technet article on Hardening the TCP/IP stack, but it was last revised in January 2006. ...
Adam Brand's user avatar
  • 6,157
4 votes
2 answers
16k views

Enabling REST (GET, POST, PUT, DELETE) support in iis 6

I want to enable REST support in iis 6. My Googling has shown me that i can achieve PUT requests by [enabling WebDav] , however enabling the Delete method still eludes me. I've seen suggestions about ...
Jonathan's user avatar
  • 191
4 votes
1 answer
8k views

For VLANs: difference between untagged and non-member setting for ports?

The "default" VLAN is VLAN 1, and traffic over ports are Untagged by default (at least, in the switches that we use). We've created VLAN 2 and marked the necessary ports as Tagged, and it's working ...
Bigbio2002's user avatar
  • 2,843
4 votes
3 answers
20k views

Audit policy being overwritten by "something"

I'm installing vendor software which requires account auditing to be enabled on our DCs. The problem is Audit Policy is not being pushed. Checking secpol.msc shows Windows Settings->Security ...
LinuxAdmin923's user avatar
4 votes
2 answers
3k views

What are all the possible causes of the "An Active Directory Domain Controller (AD DC) for the domain ..." error message?

Earlier I was having issues connecting one of my workstations (client) to my domain, and I thought it was because the domain was not in my possession yet (reference: this question). But, due to the ...
michael's user avatar
  • 171
4 votes
2 answers
5k views

How do I host 2 different website names at the same IP address?

I'd like to host two websites with different domain names, on a single server, with a single IP address. I have a fixed IP address with my service provider. It points to my router which port ...
Thomas Browne's user avatar
4 votes
1 answer
248 views

Queries passed to SQL Server are getting corrupted

We are experiencing a bizarre error with our application at a customer site. We have managed to narrow it down to the point where we can replicate the behaviour using just Management Studio and SQL ...
adrianbanks's user avatar
4 votes
3 answers
5k views

iptables: find out what packet is blocked by which rule?

How can I setup iptables in a way I know what packet is blocked by which rule? The one solution I know of is to -j LOG --log-prefix. Is there any other way?
Vladislav Rastrusny's user avatar
4 votes
1 answer
3k views

Store session files in different directories in PHP

I have several sites hosted on the same server, in different directories (e.g: server.com/site_one, server.com/site_two) and I want to store the session files for each site in a different directory. ...
Alex's user avatar
  • 217
4 votes
6 answers
7k views

How do I reduce RAM usage on my server?

I have recently launched a site that is very popular but I am having trouble with scalability. My site makes heavy use of FFmpeg and at peak times RAM usage hits the 2 GB point quickly and the swap ...
Abs's user avatar
  • 1,609
4 votes
3 answers
27k views

How to move VM to a new Virtual Network in Azure Portal

Can someone let me know how to move a VM from one Virtual Network to another. In the image, I would like to move the VM webtestnic-backend-.... from Virtual network 'webtestvnet-arrmb7u3eu35o to my ...
Carltonp's user avatar
  • 171
4 votes
1 answer
20k views

Fedora 21 pam_sss authentication failure - permission denied

We have configured a OpenLDAP server which is working fine. FreeBSD, Debian, and a WordPress plugin authenticate with no problems. We are configuring Fedora 21 with pam_sss, but we get the following ...
Joel May's user avatar
  • 189
4 votes
1 answer
21k views

RHEL 6.2 hangs at startup screen after forced reboot

I had to force a hardware reboot due to some CPU hungry application. It now hangs at the start-up screen right after the progress circle completes. I have no way to see what it is doing (checking the ...
Nick's user avatar
  • 161
4 votes
4 answers
40k views

How to mail-enable an existing Azure AD security group?

In a cloud-only Azure AD & Office 365 setup (in other words, no AD DS and no ADConnect), I have several security groups with assigned membership. I would like to mail-enable these. The users who ...
Greenstone Walker's user avatar
4 votes
1 answer
4k views

How do I test my internet connection speed via a Microsoft Windows Terminal?

I currently have two production servers. One running Windows Server 2003 and the other Windows Server 2008. When I open the Reliability and Performance Monitor I see a Network section that only goes ...
nu everest's user avatar
4 votes
1 answer
343 views

Real-world impact of partial authoritative DNS outage

Following the Dyn outage on Friday we are considering adding a secondary authoritative DNS provider. We would like to understand the real-world impact should one of the providers have an outage. For ...
Gary's user avatar
  • 224
4 votes
2 answers
17k views

Kerberos authentication through load balancer

I generally understand the problems that a load balancer poses for Kerberos. In fact, Microsoft's KB article outright states that it's not possible. However, this article - also on an MS site - ...
bmm6o's user avatar
  • 255
4 votes
3 answers
11k views

How to force a own set of ciphers in Postfix 2.11?

I would like to force a own set of TLS cipher suites rather than use the Postfix built in ones. My desired set of ciphers is (taken from nginx configuration): ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-...
burnersk's user avatar
  • 2,096
4 votes
1 answer
3k views

Does a growing number of TIME_WAIT connections affect server performance?

I have 2 servers, both running RHEL 6, one for Apache 2.2 and one for memcached (memcached-1.4.4-3). I noticed an increase in the number of TIME_WAIT connections on the Apache server netstat -n | ...
user161834's user avatar
4 votes
1 answer
9k views

vsFTPd and iptables - how to configure them in CentOS 5.5?

I've installed vsFTPd in CentOS 5.5, on two servers, and added this rule to their iptables: -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 21 -j ACCEPT Looks like this is not ...
yegor256's user avatar
  • 1,846
4 votes
2 answers
528 views

Nagios alerts using twitter (with twurl) not firing

We've been using nagios for some time and have recently decided to change how we receive alerts. To this end, we've installed twurl ( https://github.com/marcel/twurl ) and are using it to send alerts. ...
jhackett's user avatar
4 votes
1 answer
80k views

Should I care that the "server certificate does NOT include an ID which matches the server name"?

I have the following config: <VirtualHost 1.2.3.4:443> ServerName mydomain.com ServerAlias www.mydomain.com ... </VirtualHost> I want www.mydomain.com to be the primary ...
Quasdunk's user avatar
  • 189
4 votes
1 answer
26k views

Nginx 404 for css js files

I can't load css and js files on my MAC. I get 404 for those files. on Ubuntu in nginx.conf I just add on the end rewrite ^/assets/([a-z\-]+)-([a-z0-9]+).(css|js) /assets/$1.$3; and it works. But I ...
RobDee's user avatar
  • 145
4 votes
2 answers
10k views

fatal: parameter "smtpd_recipient_restrictions" in maillog

I am seeing this in my maillog: fatal: parameter "smtpd_recipient_restrictions": specify at least one working instance of: check_relay_domains, reject_unauth_destination, reject, defer or ...
markt's user avatar
  • 167
4 votes
1 answer
4k views

I need to monitor a log file with monit if the file does not change monit will alert

I need help. I was looking in to Monit documentation and I need help. I could not find my answer there. I need to monitor a log file of a service, if that log file stops to increase in size or even ...
cr0c's user avatar
  • 988
4 votes
1 answer
4k views

Systemd python service buffers journalctl output even with -u

I have a simple user systemd service configured like so: [Unit] Description=Bot AssertPathExists=/home/mikel/discord-bot/ [Service] WorkingDirectory=/home/mikel/discord-bot/ ExecStart=/home/mikel/...
mxbi's user avatar
  • 141
4 votes
1 answer
3k views

How can I install a custom (patched) PECL extension?

I'm trying to use the htscanner PECL extension on my CentOS 5/PHP 5.2.6 machine, but there's a bug in the latest version where a newline character is added to the end of every php_value directive. ...
JKS's user avatar
  • 153
4 votes
4 answers
21k views

Internal and External DNS from Different Servers, Same Zone

I am either having trouble understanding how DNS works, or I am having trouble configuring my DNS correctly (either one isn't good). I am currently working with a domain, I'll call it webdomain.com, ...
Shane's user avatar
  • 117
4 votes
2 answers
12k views

Postfix auto create Maildir

I've been beating my head against a wall for a while now on this one. Basically, here is the rundown: Our MX record points to a frontend SMTP server, which contains aliases for actually routing the ...
Eugene's user avatar
  • 143
4 votes
2 answers
18k views

Local domain DNS resolution not working using OpenVPN on a pfSense box

I am currently trying to setup an OpenVPN server with the intention of linking several servers together in order to run the backup jobs over the VPN. For this example, this is what I have: A pfSense ...
Aron Rotteveel's user avatar
4 votes
3 answers
5k views

PHP 5.2x on Ubuntu 10.04 Lucid Lynx

It appears that Lucid Lynx comes with PHP 5.3. Is there a convenient way to downgrade to the latest 5.2x release?
Mike B's user avatar
  • 213
4 votes
1 answer
4k views

Why is sshd engaging PAM still?

Background/Behavior is: if you ssh to box via and GSSAPI/Kerberos succeeds and you have a local user in /etc/passwd, you login fine per below PAM config. All Good there. But if you don't have a ...
jouell's user avatar
  • 621
4 votes
5 answers
16k views

Recovering a specific job definition from an MSDB backup?

We've been asked to recover a specific SQL 2005 job from how it existed at a certain time in the past. We have MSDB database backups from that time period, but I can't overwrite the current MSDB ...
BradC's user avatar
  • 2,210
4 votes
6 answers
4k views

What is causing email sent from my Google Apps account to bounce?

I have started to get Delivery Status Notification (Failure) messages in response to emails sent from my Google Apps domain account (at offby1.net): Delivery to the following recipient failed ...
Chris R's user avatar
  • 533
4 votes
2 answers
12k views

opendkim error loading key

I am having a hard time in debugging this error: Syslog: Apr 24 06:18:08 abcex opendkim[24223]: abcex: key data is not secure: /etc/opendkim/keys/abcex.private Apr 24 06:18:08 abcex opendkim[24223]: ...
Optionfan Bob's user avatar
4 votes
1 answer
2k views

GCP, basic IPv6 set up for Linux VM Instance

I'm trying to set up a simple VM in Google Cloud Platform that can ping ipv6.google.com successfully. I'm using these GCP docs regarding IPv6 support, including : https://cloud.google.com/vpc/docs/...
sirkus7's user avatar
  • 85
4 votes
3 answers
4k views

Disable connection tracking with UFW for port 80

During load testing my server is dropping packets due to "connection tracking" way before it's running out of resources. I'm using Ubuntu Jaunty with ufw. In my syslog I get: ip_conntrack: table full,...
reconbot's user avatar
  • 2,455
4 votes
3 answers
4k views

Network link layer equivalent of `ping` to probe a device which fell from the intranet?

Here's my situation. It's hypothetical, but happens often enough to be a problem. We have a generic layer 2 ethernet network switch. All of the devices connected to this switch use IP addresses in a ...
Stefan Lasiewski's user avatar
4 votes
3 answers
3k views

OpenDKIM permission denied [duplicate]

I have installed opendkim on CentOS 6 and set the TemporaryDirectory to /var/tmp in the opendkim.conf configuration file. After restarting the service and trying to send an email I get an error in the ...
seyfe's user avatar
  • 151
4 votes
2 answers
5k views

Exchange server can't receive from AOL; MapiExceptionNamedPropsQuotaExceeded

We have Microsoft Standard Exchange 2007. Sometime recently we have suddenly lost the ability to receive emails from AOL. As far as I can tell, we are receiving all other email normally. The only ...
Knox's user avatar
  • 2,491

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