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19,268 questions
Newest Active Bountied Unanswered
635 votes
13 answers
175k views

This is a Canonical Question about Server Security - Responding to Breach Events (Hacking) See Also: Tips for Securing a LAMP Server Reinstall after a Root Compromise? Canonical Version ...
46 votes
5 answers
29k views

This is a Canonical Question about Licensing. Questions on licensing are off-topic on Server Fault. If your question has been closed as a duplicate of this question, then this is because we want to ...
144 votes
4 answers
47k views

This is a canonical question about capacity planning Related: How do you do load testing and capacity planning for web sites? How do you do load testing and capacity planning for databases? I have a ...
289 votes
5 answers
120k views

This is a canonical question about the Apache HTTP Server’s URL rewriting module. Changing a request URL or redirecting users to a different URL than the one they originally requested is done using ...
410 votes
7 answers
1.1m views

This is a Canonical Question about using cron & crontab. You have been directed here because the community is fairly sure that the answer to your question can be found below. If your question is ...
477 votes
8 answers
196k views

This is a Canonical Question about IPv4 Subnets. Related: How does IPv6 subnetting work and how does it differ from IPv4 subnetting? How does Subnetting Work, and How do you do it by ...
Community wiki
20 revs, 11 users 40%
Kyle Brandt
101 votes
8 answers
204k views

This is a canonical question about how to handle email sent from your server being misclassified as spam. For additional information you may find these similar questions helpful: Best ...
126 votes
5 answers
78k views

This is a canonical question about capacity planning for web sites. Related: Can you help me with my capacity planning? How do you do load testing and capacity planning for databases? What are some ...
170 votes
3 answers
1.1m views

This is a Canonical Question about Connection Refused We see a lot of questions to the effect When I try to connect to a system I get a message Connection refused Why is this ?
user avatar
192 votes
5 answers
32k views

This is a Canonical Question about DoS and DDoS mitigation. I found a massive traffic spike on a website that I host today; I am getting thousands of connections a second and I see I'm using all ...
185 votes
73 answers
250k views

For a more comprehensive list of monitoring tools and their features, check out this Wikipedia page. As the question states, what are the most commonly used tools used for this task and what are their ...
Community wiki
10 revs, 6 users 44%
voretaq7
194 votes
2 answers
50k views

This is a Canonical Question about RAID levels. What are: the RAID levels typically used (including the RAID-Z family)? deployments are they commonly found in? benefits and pitfalls of each?
111 votes
6 answers
68k views

This is a Canonical Question about Fighting Spam. Also related: How to stop people from using my domain to send spam? What are SPF records, and how do I configure them? There are so ...
61 votes
2 answers
25k views

This is a canonical question about setting up SPF records. I have an office with many computers that share a single external ip (I'm unsure if the address is static or dynamic). Each computer ...
380 votes
6 answers
609k views

This is a Canonical Question about File Permissions on a Linux web server. I have a Linux web server running Apache2 that hosts several websites. Each website has its own folder in /var/www/. /var/...

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