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Configuration

This page contains general configuration details in all horrific machines; for machine-specific configuration, see Hardware.

Server configuration:

Users

Any new hosting user will have an account that can ssh onto our machines with limited access; a console/dashboard will automate most functionality - creating docker containers (which can then be ssh'd into with full access), exposing ports of a docker container, linking to domains (reverse proxy through nginx), creating/uploading SSL certs, etc.

The "horrific" CLI in this repo will manage most of these features, as well as providing an admin CLI & monitoring functionality to keep track of resource usage.

Config

Nginx

Proxying containerized docker apps

Security

SSH access

No passwords are set; all authentication is by RSA keys only.

fail2ban configuration

/etc/fail2ban/jail.local

[DEFAULT]
destemail = someone@horrific.dev
sendername = Fail2Ban

[sshd]
enabled = true
port = 22

[sshd-ddos]
enabled = true
port = 22

iptables rules

iptables-persistent saves/restores the iptables configuration on boot.

/etc/iptables/rules.v4


*filter

#  Allow all loopback (lo0) traffic and drop all traffic to 127/8 that doesn't use lo0
-A INPUT -i lo -j ACCEPT
-A INPUT ! -i lo -d 127.0.0.0/8 -j REJECT

#  Accept all established inbound connections
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

#  Allow all outbound traffic - you can modify this to only allow certain traffic
-A OUTPUT -j ACCEPT

#  Allow HTTP and HTTPS connections from anywhere (the normal ports for websites and SSL).
-A INPUT -p tcp --dport 80 -j ACCEPT
-A INPUT -p tcp --dport 443 -j ACCEPT

#  Allow SSH connections
#  The -dport number should be the same port number you set in sshd_config
-A INPUT -p tcp -m state --state NEW --dport 22 -j ACCEPT

#  Allow ping
-A INPUT -p icmp -m icmp --icmp-type 8 -j ACCEPT

#  Log iptables denied calls
-A INPUT -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7

#  Reject all other inbound - default deny unless explicitly allowed policy
-A INPUT -j REJECT
-A FORWARD -j REJECT

COMMIT

user management

https://medium.com/@mccode/processes-in-containers-should-not-run-as-root-2feae3f0df3b