Synchronet v3.20b-Win32 (install) has been released (Jan-2025).

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howto:linux_non-root [2019/01/07 13:33] – [authbind] Mortifishowto:linux_non-root [2023/03/09 10:40] (current) – add link to systemd unit file digital man
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-====== Linux Non-root ======+====== Start Synchronet on Linux as a Non-root user ====== 
 + 
 +===== systemd ===== 
 +If you're running any kind of recent (last 2yrs+) systemd, just put this line in the ''[Service]'' section of your ''[[https://gitlab.synchro.net/main/sbbs/-/blob/master/install/systemd/sbbs.service|sbbs.service]]'' file, if it isn't already:\\ 
 +''**AmbientCapabilities=CAP_NET_BIND_SERVICE**''
  
 ===== setcap ===== ===== setcap =====
-''setcap'' may be used to allow Synchronet (''sbbs'') for Linux to run completely as **non-root** user by explicitly allowing the binary to bind low ports using the command-line:+''setcap'' may be used to allow Synchronet (''sbbs'') for Linux to run completely as a **non-root** user by explicitly allowing the binary to bind low ports using the command-line:
  
-<code>sudo /sbin/setcap 'cap_net_bind_service=ep' /sbbs/exec/sbbs</code> +  $ sudo /sbin/setcap 'cap_net_bind_service=+ep' `realpath /sbbs/exec/sbbs`
- +
-This must be ran on the executable file itself (if ''/sbbs/exec/sbbs'' is a symlink, apply it to the target of the link instead). For example: +
-  sudo setcap 'cap_net_bind_service=ep' ~/sbbs/src/sbbs3/gcc.linux.x64.exe.release/sbbs +
- +
-This will need to be re-ran any time the binary is rebuilt (and remember to properly reference ''.debug'' or ''.release''). +
- +
-This requires that the [[https://packages.debian.org/stable/libcap2-dev|libcap2-dev]] package be installed prior to building ''sbbs'' (or perform a //clean// build of ''sbbs'' after installing ''libcap2-dev''). See [[install:nix:prerequisites]] for details.+
  
 +This will need to be re-ran any time the binary is rebuilt and can be automated by adding the ''setcap'' target to your ''make'' command-line executed in ''src/sbbs3'':
 +  $ make RELEASE=1 setcap symlinks
 +  
 +To confirm the bind capabilities were set successfully, run:
 +  $ sudo getcap `realpath /sbbs/exec/sbbs`
 +  /path/to/sbbs = cap_net_bind_service+ep
 ===== authbind ===== ===== authbind =====
  
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 Configure it to grant access to the relevant ports, e.g. to allow 80, 21, 23,25, 110, etc 443 from all users and groups: Configure it to grant access to the relevant ports, e.g. to allow 80, 21, 23,25, 110, etc 443 from all users and groups:
  
-sudo touch /etc/authbind/byport/80 +  sudo touch /etc/authbind/byport/80 
-sudo touch /etc/authbind/byport/443+ 
 +  sudo touch /etc/authbind/byport/443 
 and so forth for all ports you are using below 1025 ... and so forth for all ports you are using below 1025 ...
  
-sudo chmod 777 /etc/authbind/byport/80 +  sudo chmod 777 /etc/authbind/byport/80 
-sudo chmod 777 /etc/authbind/byport/443+ 
 +  sudo chmod 777 /etc/authbind/byport/443 
 and so forth for all ports you are using below 1025 and so forth for all ports you are using below 1025
  
 Now execute your command via authbind (optionally specifying --deep or other arguments, see the man page): Now execute your command via authbind (optionally specifying --deep or other arguments, see the man page):
  
-sudo authbind --deep /sbbs/exec/sbbs -d+  sudo authbind --deep /sbbs/exec/sbbs -d
  
  

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