I'm setting up a debian 10 server and its my first time using iptables, but it seems iptables just doesn't like basic arguments. I went through the manpage and tried stuff from https://phoenixnap.com/kb/iptables-tutorial-linux-firewall
~# iptables –A INPUT –j DROP
Bad argument `–A'
Try `iptables -h' or 'iptables --help' for more information.
~# iptables –A INPUT –p tcp ––dport 80 –j ACCEPT
Bad argument `–A'
Try `iptables -h' or 'iptables --help' for more information.
~# iptables –A INPUT –i lo –j ACCEPT
Bad argument `–A'
Try `iptables -h' or 'iptables --help' for more information.
~# iptables --version
iptables v1.8.2 (legacy)
whats happening here?
the manpage knows about -A :
SYNOPSIS
iptables [-t table] {-A|-C|-D} chain rule-specification
something is completely nuts here. Eiter me or iptables or both m)