Basic restrictive firewall

[hcoop/zz_old/debian/hcoop-firewall-config.git] / files / ferm.conf.hcoop

# -*- shell-script -*-
#
#  Configuration file for ferm(1).
#

table filter {
    chain INPUT {
        policy DROP;

        # connection tracking
        mod state state INVALID DROP;
        mod state state (ESTABLISHED RELATED) ACCEPT;

        # allow local packet
        interface lo ACCEPT;

        # respond to ping
        proto icmp ACCEPT; 

        # allow IPsec
        proto udp dport 500 ACCEPT;
        proto (esp ah) ACCEPT;

	proto tcp dport ssh ACCEPT;

        # domtool slave
	proto tcp dport 1235 ACCEPT;

	proto (tcp udp) dport ( kerberos afs3-callback ) ACCEPT;

	# system ports
	@include 'local_ports_in.conf';
	#@include 'users_tcp_in.conf'
    }
    chain OUTPUT {
        policy DROP;

        # connection tracking
        #mod state state INVALID DROP;
        mod state state (ESTABLISHED RELATED) ACCEPT;

	proto tcp dport ssh ACCEPT;

        # connections to domtool dispatcher and slaves (for e.g. QFoo)
	proto tcp dport 1234 ACCEPT;
	proto tcp dport 1235 ACCEPT;

	proto (tcp udp) dport ( kerberos afs3-fileserver afs3-callback afs3-prserver afs3-vlserver afs3-volser afs3-errors afs3-bos ) ACCEPT;

	proto (tcp udp) dport ntp ACCEPT;
	proto (tcp udp) dport domain ACCEPT;

        # root needs port 80 for things like apt-get
	mod owner uid-owner 0 { proto (tcp) dport (http https) ACCEPT; }

	@include 'local_ports_out.conf';
	#include 'users_tcp_out.conf'
    }
    chain FORWARD {
        policy DROP;

        # connection tracking
        mod state state INVALID DROP;
        mod state state (ESTABLISHED RELATED) ACCEPT;
    }
}

#include 'user_chains.conf'

# IPv6:
#domain ip6 {
#    table filter {
#        chain INPUT {
#            policy ACCEPT;
#            # ...
#        }
#        # ...
#    }
#}