blob: bb5cf91bb3f4d1fd4e6347258a12ea652e392d9a (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
#!/bin/sh
#
# /etc/rc.d/iptables: load/unload iptable rules
#
rules=rules.v4
#rules=vlan.v4
iptables_clear () {
echo "clear all iptables tables"
iptables -F
iptables -X
iptables -t nat -F
iptables -t nat -X
iptables -t mangle -F
iptables -t mangle -X
iptables -t raw -F
iptables -t raw -X
iptables -t security -F
iptables -t security -X
}
case $1 in
start)
iptables_clear
echo "starting IPv4 firewall filter table..."
/usr/sbin/iptables-restore < /etc/iptables/${rules}
;;
stop)
iptables_clear
echo "stopping firewall and deny everyone..."
/usr/sbin/iptables -P INPUT DROP
/usr/sbin/iptables -P FORWARD DROP
/usr/sbin/iptables -P OUTPUT DROP
# Unlimited on local
/usr/sbin/iptables -A INPUT -i lo -j ACCEPT
/usr/sbin/iptables -A OUTPUT -o lo -j ACCEPT
# log everything else and drop
/usr/sbin/iptables -A INPUT -j LOG --log-level 7 --log-prefix "iptables: INPUT: "
/usr/sbin/iptables -A OUTPUT -j LOG --log-level 7 --log-prefix "iptables: OUTPUT: "
/usr/sbin/iptables -A FORWARD -j LOG --log-level 7 --log-prefix "iptables: FORWARD: "
;;
open)
iptables_clear
echo "outgoing Open firewall and deny everyone..."
/usr/sbin/iptables -P INPUT DROP
/usr/sbin/iptables -P FORWARD DROP
/usr/sbin/iptables -P OUTPUT ACCEPT
/usr/sbin/iptables -A OUTPUT -j ACCEPT
# Unlimited on local
/usr/sbin/iptables -A INPUT -i lo -j ACCEPT
/usr/sbin/iptables -A OUTPUT -o lo -j ACCEPT
# Accept passive
/usr/sbin/iptables -A INPUT -p tcp --dport 1024: -m state --state ESTABLISHED,RELATED -j ACCEPT
/usr/sbin/iptables -A INPUT -p udp --dport 1024: -m state --state ESTABLISHED,RELATED -j ACCEPT
# log everything else and drop
/usr/sbin/iptables -A INPUT -j LOG --log-level 7 --log-prefix "iptables: INPUT: "
/usr/sbin/iptables -A OUTPUT -j LOG --log-level 7 --log-prefix "iptables: OUTPUT: "
/usr/sbin/iptables -A FORWARD -j LOG --log-level 7 --log-prefix "iptables: FORWARD: "
;;
restart)
$0 stop
$0 start
;;
*)
echo "usage: $0 [start|stop|restart]"
;;
esac
# End of file
|