# 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, 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

> apt install postfix

Posta solo locale.

Per riconfigurare:

> dpkg-reconfigure postfix

## SWAP

> free -h
> fallocate -l 2G /swapfile
> ls -lh /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