base.rules

*filter

# WAN = ens192 ; LAN = ens160

# Reset counters
:INPUT ACCEPT [0:0]
:FORWARD DROP [0:0]
:OUTPUT ACCEPT [0:0]
:FILTERS - [0:0]
:FILTERS-LAN - [0:0]

# Flush
-F INPUT
-F FILTERS
-F FILTERS-LAN

# Select
-A INPUT -i lo -j ACCEPT
-A INPUT -i ens160 -j FILTERS-LAN
-A INPUT -i ens192 -j FILTERS

# Filters
## Activate established connexions
-A FILTERS -m state --state ESTABLISHED,RELATED -j ACCEPT

## Monitoring
-A FILTERS -s 10.1.1.1/32 -p udp -m udp --dport 161 -j ACCEPT
-A FILTERS -s 10.1.1.1/32 -p tcp -m tcp --dport 5666 -j ACCEPT
-A FILTERS -s 10.1.1.1/32 -p icmp --icmp-type any -j ACCEPT

## Admin ssh
-A FILTERS -s 10.0.0.1/32 -p tcp -m tcp --dport 22 -j ACCEPT
-A FILTERS -s 10.0.1.1/32 -p tcp -m tcp --dport 22 -j ACCEPT

## Admin ping
-A FILTERS -s 10.0.0.1/32 -p icmp --icmp-type any -j ACCEPT
-A FILTERS -s 10.0.1.1/32 -p icmp --icmp-type any -j ACCEPT

## Drop public in
-A FILTERS -j DROP

# Filters-LAN
## Activate established connexions
-A FILTERS-LAN -m state --state ESTABLISHED,RELATED -j ACCEPT

## Admin allow all
-A FILTERS-LAN -s 10.0.1.1/32 -j ACCEPT

## Ping
-A FILTERS-LAN -s 10.0.1.1/24 -p icmp --icmp-type any -j ACCEPT

## Log and Drop lan in
-A FILTERS-LAN -j LOG --log-prefix "[LAN BLOCK] "
-A FILTERS-LAN -j DROP

## Commit
COMMIT