Re: Newbie: need help with table rules

[Jean-Christian Imbeault <jc@xxxxxxxxxxxxxxxx>]

Eugene Joubert wrote:
> First of all you're connection SSH doesn't work  because you have got 
> your OUTPUT policy as DROP. Now surely if you want the linux box to 
> return your request you need to allow it to do so:-)
Doh! So true. Ok, now I have fixed that but I still cannot get to SSH. 
The new rules are:

$IPT --policy INPUT   DROP
$IPT --policy OUTPUT  ACCEPT
$IPT --policy FORWARD DROP

# Loopback accepts everything

$IPT -A INPUT  -i lo -j ACCEPT
$IPT -A OUTPUT -o lo -j ACCEPT

# Aceept ICMP
$IPT -A INPUT -p icmp -j ACCEPT

# Allow previously established connections

$IPT -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

# HTTP, HTTPS, SSH

$IPT -A INPUT -p TCP -s 0/0 -i eth0 -d $IP --dport 80  -j ACCEPT
$IPT -A INPUT -p TCP -s 0/0 -i eth0 -d $IP --dport 443 -j ACCEPT
$IPT -A INPUT -p TCP -s 0/0 -i eth0 -d $IP --dport 22  -j ACCEPT

# DNS
$IPT -A INPUT -p tcp --dport 53 -j ACCEPT
$IPT -A INPUT -p udp --dport 53 -j ACCEPT