acCrocRadio/setup-01.md

# acCrocRadio setup Sistema

## DNS

DNS-zone presso il registrar, esempio: accroc.radio

```
* 10800 IN A 10.000.00.001
@ 10800 IN A 10.000.00.001
wiki 10800 IN CNAME accroc.radio.
ac 10800 IN CNAME accroc.radio.
wp 10800 IN CNAME accroc.radio.
www 10800 IN CNAME accroc.radio.
```

## Installazione

Debian 10

    apt update ; apt upgrade ; apt clean

    apt install sudo ssh screen net-tools htop strace ntp ufw figlet apg wipe
    apt install curl git apt-transport-https tmux byobu man elinks grc dnsutils
    apt install fish tree zip nmap rsync mutt logwatch rkhunter

## Hostname

    hostnamectl set-hostname croco

    figlet: figlet cRoc > /etc/motd

## Firewall

    ufw default deny incoming
    ufw default allow outgoing
    ufw allow ssh
    ufw allow 80 (e 443, 2022, 8000, 8005)
    ufw enable

Consigliato cambiare porta sshd, abilitare ssh login passwordless

## Time

    dpkg-reconfigure tzdata

Europe/Rome

## Dotfiles

~/.bashrc

```
alias rm='rm -i'
alias cp='cp -i'
alias mv='mv -i'
alias docker='grc docker'
```

~/.nanorc

```
syntax "all" "[\.]*$"
color green "^#.*$"
set tabsize 4
set tabstospaces
```

## Mailserver

Posta solo locale.

    apt install postfix

Per riconfigurare:

    dpkg-reconfigure postfix

## SWAP

    free -h
    fallocate -l 2G /swapfile
    chmod 600 /swapfile
    mkswap /swapfile
    swapon /swapfile
    swapon --show
    sudo cp /etc/fstab /etc/fstab.bak
    echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab
    cat /proc/sys/vm/swappiness
    sysctl vm.swappiness=10
    echo vm.swappiness=10 >> /etc/sysctl.conf
    cat /proc/sys/vm/vfs_cache_pressure
    sysctl vm.vfs_cache_pressure=50
    echo vm.vfs_cache_pressure=50 >> /etc/sysctl.conf