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Difference between revisions of "Setting up a Server"

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[[File:Setting_up_a_Fileserver.jpeg|thumb|This picture details the ramblings of an incompetent years ago, please do not follow it.]]
 
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'''Need a fileserver that won't face the external internet?  Check [[Home server]].'''
 
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Need to email? Set up a web server?  Well, here's some advice.  We're gonna try to write this page like you've never done this shit before.  It does, however, assume you have at least some basic [[GNU/Linux]] knowledge.  If you don't, you probably aren't ready for this.  You weren't going to set up a server using Windows, were you?  Jesus Christ, how horrifying.
 
Need to email? Set up a web server?  Well, here's some advice.  We're gonna try to write this page like you've never done this shit before.  It does, however, assume you have at least some basic [[GNU/Linux]] knowledge.  If you don't, you probably aren't ready for this.  You weren't going to set up a server using Windows, were you?  Jesus Christ, how horrifying.
  
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A lot of this applies to both a physical machine as well as a [[VPS]] setup.
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Common uses for a server:  
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* Install a media player system and stream content to your local network
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== Protecting Your Private Network ==
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* Install a cloud service like Nextcloud to run your own Dropbox service, no privacy issues, full control, unlimited space (well, limited by how many drives you can cram in).
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Use a [https://en.wikipedia.org/wiki/DMZ_%28computing%29 DMZ], nigger.
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* Always on seedbox. Start torrents with your phone through the web interface while out, they're done by the time you're back home.
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* Host a personal website.
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== Protecting from DDoS and shit ==
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* Run your own mailserver just like Hillary!
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Use [http://www.fail2ban.org/wiki/index.php/Main_Page Fail2Ban] and perhaps a redundant computer in the DMZ. Also never use passwords, only keyfiles.
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** Warning: Running a mailserver is a shitton of work, especially if you want emails to google/outlook to be seen.
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* Run a dedicated game server.
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== Securing your shell ==
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* Run various webapps, develop your own webapps.
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* SSH-tunnel to the server from work/school/etc to use it as a proxy, so that the admin of the network you're on can't see what sites you're going on.
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If anyone breaks into your shell, you are FUCKED.  They will own your whole server within minutes.  There are bots that do nothing but scan for vulnerabilities on random IP addresses all day long, and they will hammer your SSH port like its Natalie Portman's butthole.  You need to secure that shit as your first priority, and here's how:
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* Run a VPN for location spoofing or security when you're out and about.
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Add a non-root user.  Then, while logged in as root, do this:
 
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visudo
 
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Go down to the bit where it says ''# User privilege specification'', and copy the setup for the root line.  So, if your non-root user is "faggot," make it look like so:
 
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# User privilege specification
 
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root    ALL=(ALL) ALL
 
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faggot  ALL=(ALL) ALL
 
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Install [http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html PuTTY], on a different machine than the one you are setting up as the server.  This will include PuTTYGen.  PuTTY is [[freedom|free]] software, and is available for Windows and most GNU/Linux distros. Note that GNU/Linux and OSX has ssh and sshd by default.
 
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Run PuTTYGen (or ssh-keygen for GNU/Linux) to generate a public/private key pair. Go with SSH-2 DSA, 4096 bits - nobody's gonna crack that shit easily.  When done, it will display your public key.  Except for the very beginning and very end, it will look like a shitton of gibberish - this is normal.  Copy and paste that text into a text file, but omit the last bit that says "dsa-key-########".  DO NOT PUT IN A PASSPHRASE.  Save the private key.
 
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Open PuTTY and log in as your non-root user.  Then do this:
 
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mkdir /home/faggot/.ssh
 
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nano /home/faggot/.ssh/authorized_keys
 
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Paste in your public key that you saved as a text file.  MAKE SURE IT IS ALL ONE LINE, like so:
 
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  ssh-dsa [insanely long string of crap]
 
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And save it.
 
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Now take ownership of it:
 
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chmod 600 ~/.ssh/authorized_keys
 
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DO NOT LOG OUT OF PuTTY YET, but open a second PuTTY session and connect to your server, only this time point PuTTY to your private key file to test it out. If it all goes well, your login will look something like this:
 
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Using username "faggot".
 
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Authenticating with public key "dsa-key-########"
 
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Assuming that works, close your previous PuTTY session and do this:
 
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sudo nano /etc/ssh/sshd_config
 
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You can change the SSH port here to a random number - that's optional though, because hacker bots are gonna find it anyhow.  But if you do change it don't forget to change it in PuTTY as well.
 
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But DO make the following changes:
 
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PermitRootLogin no
 
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PasswordAuthentication no
 
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X11Forwarding no
 
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UsePAM no
 
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Add the following to the bottom if missing:
 
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UseDNS no
 
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AllowUsers faggot
 
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If you have additional users, put a space after "faggot" and add the next user, and so on if you have more. 
 
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Save these changes and restart your SSH server. On [[Debian]] or other system using a deprecated initscript setup it would be:
 
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sudo /etc/init.d/ssh reload
 
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If you are using systemd, it would be:
 
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sudo systemctl restart sshd
 
  
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BOOM.  Assuming all went well, you have now set up your shell so that 1) "root" cannot log in, 2) ONLY "faggot" can log in, and 3) "faggot" can ONLY log in using their private key file instead of a password.  You'll still want to set up and install fail2ban or similar to secure things further.
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=Getting Started=
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* [[Encryption|Encrypted or unencrypted drive (LUKS)]]
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* [[Home server/Choosing an Operating System]]
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* [[Home_Server/Setting up your Storage]]
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* [[Home server/Remote access]]
  
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Oh, and don't lose that private key file.  You cannot recreate it, so losing it means you are doomed. Back it up in multiple places. You may wish to place a copy on a floppy drive (if you're a time-traveller from 1995) or USB stick as well, for safekeeping.
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=Recommended software=
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* [[Home server#Server software]]
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* [[Home server#System administration software]]
  
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== Securing your shell even more (and everything else) ==
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==Common home server services==
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Most packages have clear tutorials on their repo/project site. Here are some handpicked guides for the most common types of software used
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* Cloud Storage - Nextcloud
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* Web Server - [https://homebrewserver.club/fundamentals-webserver-website.html Apache] or NGINX
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* VPN - Wireguard or OpenVPN
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* Media Streaming - Jellyfin or PLEX
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* XMPP - [https://homebrewserver.club/configuring-a-modern-xmpp-server.html Prosody]
  
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Even with your shell secured, its still gonna get hammered, and that's going to get irritating quick.  Given enough time, even your super-secret keyfile can eventually be guessed.  Well, guess what?  You can ban the SHIT out of those bots with fail2ban.
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=Centralized storage=
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A server is perfect for this job. It is (supposedly) an always available resource on the local network. If using this in your house, you can expect reasonable speeds, even over WiFi that will let you do many daily tasks. One option is to set it up with NFS (Linux-centric, can be used on windows but it's shit) or Samaba if you have Windows clients on your network, so you can watch your chinese cartoons on any device and keep your documents/whatever synchronised. This synchronisation is a key benefit of the network storage.
  
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fail2ban monitors your log files (any of them, not just SSH).  If it sees too many login failures, it bans the offending IP for as long as you configure it to.  It won't prevent a distributed brute-force attack, but it will help a LOT.
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You may want to consider a [[Wikipedia:RAID|RAID]] array for long-term file storage.  RAID is not backup, but will protect your files in case of drive failure. See [[Home server#File Systems and RAID]] for more information.
  
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*[https://www.digitalocean.com/community/articles/how-to-protect-ssh-with-fail2ban-on-debian-7 How To Protect SSH with fail2ban on Debian 7]
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== Web server ==
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*[https://www.digitalocean.com/community/articles/how-to-protect-ssh-with-fail2ban-on-centos-6 How To Protect SSH with fail2ban on CentOS 6]
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[[File:Tidle town.png|thumb|right|alt=A reminder why you should always self-host and if you don't, avoid inbred retards|A reminder why you should always self-host and if you don't, avoid inbred retards]]
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*[https://www.digitalocean.com/community/articles/how-to-protect-ssh-with-fail2ban-on-ubuntu-12-04 How To Protect SSH with fail2ban on Ubuntu 12.04]
 
  
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Please note that if you are going to install iRedMail (below), it will install and configure fail2ban for you.  You may still wish to tweak its settings though.
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A web server serves up a page. The nice things about serving it from a server, than, say, Wordpress or your Dropbox share, is that now you can run web apps and server side code for a dynamic page.
  
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== Setting Up Email and web server, the EASY way ==
 
  
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''See also:  [[Email]]''
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===HTTPS===
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The extra CPU burden of TLS is minuscule. Your server should serve up everything on HTTPS only. Keep port 80 (plain HTTP) open but redirect everything to HTTPS. If port 80 is closed, typing the address of your server into the address bar of a browser will probably fail (because the browser assumes you meant HTTP, but you have to go to HTTPS).
  
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Want to use your own email server to avoid the [[NSA]]?  Good call!  But setting up email servers can be pretty complicated. Assuming you mostly don't know what the hell you are doing, and assuming you're already secured your system per above, have a peek at [http://www.iredmail.org/ iRedMail].  iRedMail is an automated email and web server setup package. It works best if installed on a FRESH system - if you're already fumbled around with Apache and/or dovecot and/or postfix and failed, wipe your shit and start over with iRedMail.  It will install and configure Postfix, Dovecot, Apache, and MySQL.  It also installs and configures fail2ban and iptables.  It includes spam filtering and greylisting.  It just works.  Its pretty awesome.
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Issue a self-signed certificate. CAs are for jerks. Set the duration short (eg. a year) and don't forget to make a new one. If you've got a domain, get a Lets Encrypt-signed cert and set up a cron job to renew it. They're pretty sweet.
  
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You will, however, still need to manually set up your DNS records (MX, SPF, and DKIM).
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[https://certbot.eff.org/ Certbot] makes https easy to implement with Let's Encrypt certificates
  
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If you want to get fancy and replace MySQL with MariaDB, or replace Apache with, say, Nginx, you can do that after you set up iRedMail, but any breakage is up to you to fix.
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=External links=
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* [https://library.linode.com/ Linode Library] - Good beginner tutorials
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* [https://landchad.net/ landchad.net] - "Chad's Guide to Starting Your Own Website"
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* [https://github.com/x08d/lockdown.sh Script to secure Debian and Debian based Linux installs]
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* [https://gist.github.com/deergod1/818ec78ab70947a2f89df2bb5bb28896 Setup pfSense]
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* [https://github.com/pikvm/pikvm Raspberry Pi KVM for managing servers remotely]
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* [https://devconnected.com/syslog-the-complete-system-administrator-guide/ The Complete System Administrator Guide]
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* [https://github.com/erebe/personal-server/blob/master/README.md Example of a personal server]
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* [https://www.cyberciti.biz/cloud-computing/increase-your-linux-server-internet-speed-with-tcp-bbr-congestion-control/ Increase Linux Internet speed with TCP BBR congestion control]
  
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== External links ==
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=See also=
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[https://library.linode.com/ Linode Library] - Good beginner tutorials.
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* [[Home server]]
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* [[Setting up a Server/Home or Remote?]]
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* [[Setting up a Server/Mail]]
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* [[Setting up a Server/DNS]]
  
 
[[Category:Tutorials]]
 
[[Category:Tutorials]]
 +
[[Category:HowTo]]

Latest revision as of 09:23, 3 July 2023

Need to email? Set up a web server? Well, here's some advice. We're gonna try to write this page like you've never done this shit before. It does, however, assume you have at least some basic GNU/Linux knowledge. If you don't, you probably aren't ready for this. You weren't going to set up a server using Windows, were you? Jesus Christ, how horrifying.

Common uses for a server:

  • Install a media player system and stream content to your local network
  • Install a cloud service like Nextcloud to run your own Dropbox service, no privacy issues, full control, unlimited space (well, limited by how many drives you can cram in).
  • Always on seedbox. Start torrents with your phone through the web interface while out, they're done by the time you're back home.
  • Host a personal website.
  • Run your own mailserver just like Hillary!
    • Warning: Running a mailserver is a shitton of work, especially if you want emails to google/outlook to be seen.
  • Run a dedicated game server.
  • Run various webapps, develop your own webapps.
  • SSH-tunnel to the server from work/school/etc to use it as a proxy, so that the admin of the network you're on can't see what sites you're going on.
  • Run a VPN for location spoofing or security when you're out and about.

Getting Started

Recommended software

Common home server services

Most packages have clear tutorials on their repo/project site. Here are some handpicked guides for the most common types of software used

  • Cloud Storage - Nextcloud
  • Web Server - Apache or NGINX
  • VPN - Wireguard or OpenVPN
  • Media Streaming - Jellyfin or PLEX
  • XMPP - Prosody

Centralized storage

A server is perfect for this job. It is (supposedly) an always available resource on the local network. If using this in your house, you can expect reasonable speeds, even over WiFi that will let you do many daily tasks. One option is to set it up with NFS (Linux-centric, can be used on windows but it's shit) or Samaba if you have Windows clients on your network, so you can watch your chinese cartoons on any device and keep your documents/whatever synchronised. This synchronisation is a key benefit of the network storage.

You may want to consider a RAID array for long-term file storage. RAID is not backup, but will protect your files in case of drive failure. See Home server#File Systems and RAID for more information.

Web server

A reminder why you should always self-host and if you don't, avoid inbred retards
A reminder why you should always self-host and if you don't, avoid inbred retards

A web server serves up a page. The nice things about serving it from a server, than, say, Wordpress or your Dropbox share, is that now you can run web apps and server side code for a dynamic page.


HTTPS

The extra CPU burden of TLS is minuscule. Your server should serve up everything on HTTPS only. Keep port 80 (plain HTTP) open but redirect everything to HTTPS. If port 80 is closed, typing the address of your server into the address bar of a browser will probably fail (because the browser assumes you meant HTTP, but you have to go to HTTPS).

Issue a self-signed certificate. CAs are for jerks. Set the duration short (eg. a year) and don't forget to make a new one. If you've got a domain, get a Lets Encrypt-signed cert and set up a cron job to renew it. They're pretty sweet.

Certbot makes https easy to implement with Let's Encrypt certificates

External links

See also

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