a4f661fc |
1 | #!/bin/bash |
2 | |
3 | iptables="/sbin/iptables" |
4 | ifconfig="/sbin/ifconfig" |
5 | |
f035230d |
6 | #pimp files must be generated by optional-tools/make-pimp utility |
7 | pimp_2way_nat="/rw/var/run/pimp-2way-nat.tmp" |
8 | pimp_snat="/rw/var/run/pimp-snat.tmp" |
9 | etchosts="/rw/etc/hosts" |
a4f661fc |
10 | script="/rw/etc/network/snat-dnat" |
11 | |
12 | echo "#!/bin/bash" > $script |
13 | echo $iptables -t nat -F >> $script |
14 | echo $iptables -t nat -X >> $script |
15 | echo "echo -n \"Setting firewall rules \"" >> $script |
16 | |
17 | # =============================================================== |
f035230d |
18 | # Symetrical SNAT-DNAT using indexed iptables |
a4f661fc |
19 | # =============================================================== |
20 | |
f035230d |
21 | echo -n "Generating new iptables rules " |
a4f661fc |
22 | |
f035230d |
23 | for czfip in `grep -v ^# $pimp_2way_nat|cut -f 1 -d " "` |
a4f661fc |
24 | do |
f035230d |
25 | pubip=`grep "$czfip " $pimp_2way_nat|cut -f 2 -d " "` |
a4f661fc |
26 | czffirstindex=priv_`ipcalc -n $czfip/20|grep Network|cut -f 4 -d \ |tr [./] _` |
27 | czfsecondindex=priv_`ipcalc -n $czfip/23|grep Network|cut -f 4 -d \ |tr [./] _` |
28 | czfthirdindex=priv_`ipcalc -n $czfip/26|grep Network|cut -f 4 -d \ |tr [./] _` |
29 | pubfirstindex=pub_`ipcalc -n $pubip/27|grep Network|cut -f 4 -d \ |tr [./] _` |
30 | pubsecondindex=pub_`ipcalc -n $pubip/29|grep Network|cut -f 4 -d \ |tr [./] _` |
31 | |
a4f661fc |
32 | if ! grep $czffirstindex $script > /dev/null |
33 | then |
34 | echo $iptables -t nat -N $czffirstindex >> $script |
35 | echo $iptables -t nat -F $czffirstindex >> $script |
36 | echo $iptables -t nat -A POSTROUTING -s `ipcalc -n $czfip/20|grep Network|cut -f 4 -d \ ` -o eth1 -j $czffirstindex >> $script |
37 | fi |
38 | |
39 | if ! grep $czfsecondindex $script > /dev/null |
40 | then |
41 | echo $iptables -t nat -N $czfsecondindex >> $script |
42 | echo $iptables -t nat -F $czfsecondindex >> $script |
43 | echo $iptables -t nat -A $czffirstindex -s `ipcalc -n $czfip/23|grep Network|cut -f 4 -d \ ` -o eth1 -j $czfsecondindex >> $script |
44 | fi |
45 | |
46 | if ! grep $czfthirdindex $script > /dev/null |
47 | then |
48 | echo $iptables -t nat -N $czfthirdindex >> $script |
49 | echo $iptables -t nat -F $czfthirdindex >> $script |
50 | echo $iptables -t nat -A $czfsecondindex -s `ipcalc -n $czfip/26|grep Network|cut -f 4 -d \ ` -o eth1 -j $czfthirdindex >> $script |
51 | fi |
52 | |
53 | if ! grep $pubfirstindex $script > /dev/null |
54 | then |
55 | echo $iptables -t nat -N $pubfirstindex >> $script |
56 | echo $iptables -t nat -F $pubfirstindex >> $script |
57 | echo $iptables -t nat -A PREROUTING -i eth1 -d `ipcalc -n $pubip/27|grep Network|cut -f 4 -d \ ` -j $pubfirstindex >> $script |
58 | fi |
59 | |
60 | if ! grep $pubsecondindex $script > /dev/null |
61 | then |
62 | echo $iptables -t nat -N $pubsecondindex >> $script |
63 | echo $iptables -t nat -F $pubsecondindex >> $script |
64 | echo $iptables -t nat -A $pubfirstindex -i eth1 -d `ipcalc -n $pubip/29|grep Network|cut -f 4 -d \ ` -j $pubsecondindex >> $script |
65 | fi |
66 | |
67 | echo $iptables -t nat -A $pubsecondindex -i eth1 -d $pubip/32 -j DNAT --to-destination $czfip >> $script |
68 | echo $iptables -t nat -A $pubsecondindex -i eth1 -d $pubip/32 -j ACCEPT >> $script |
69 | |
70 | echo $iptables -t nat -A $czfthirdindex -s $czfip/32 -o eth1 -j SNAT --to-source $pubip >> $script |
71 | echo $iptables -t nat -A $czfthirdindex -s $czfip/32 -o eth1 -j ACCEPT >> $script |
72 | |
73 | echo -n . |
74 | echo "echo -n ." >>$script |
75 | done |
76 | echo " done." |
77 | |
78 | # =============================================================== |
f035230d |
79 | # SNAT only using indexed iptables (should be rather function, hmm) |
80 | # =============================================================== |
81 | |
82 | for czfip in `grep -v ^# $pimp_snat|cut -f 1 -d " "` |
83 | do |
84 | pubip=`grep "$czfip " $pimp_snat|cut -f 2 -d " "` |
85 | czffirstindex=priv_`ipcalc -n $czfip/20|grep Network|cut -f 4 -d \ |tr [./] _` |
86 | czfsecondindex=priv_`ipcalc -n $czfip/23|grep Network|cut -f 4 -d \ |tr [./] _` |
87 | czfthirdindex=priv_`ipcalc -n $czfip/26|grep Network|cut -f 4 -d \ |tr [./] _` |
88 | |
89 | if ! grep $czffirstindex $script > /dev/null |
90 | then |
91 | echo $iptables -t nat -N $czffirstindex >> $script |
92 | echo $iptables -t nat -F $czffirstindex >> $script |
93 | echo $iptables -t nat -A POSTROUTING -s `ipcalc -n $czfip/20|grep Network|cut -f 4 -d \ ` -o eth1 -j $czffirstindex >> $script |
94 | fi |
95 | |
96 | if ! grep $czfsecondindex $script > /dev/null |
97 | then |
98 | echo $iptables -t nat -N $czfsecondindex >> $script |
99 | echo $iptables -t nat -F $czfsecondindex >> $script |
100 | echo $iptables -t nat -A $czffirstindex -s `ipcalc -n $czfip/23|grep Network|cut -f 4 -d \ ` -o eth1 -j $czfsecondindex >> $script |
101 | fi |
102 | |
103 | if ! grep $czfthirdindex $script > /dev/null |
104 | then |
105 | echo $iptables -t nat -N $czfthirdindex >> $script |
106 | echo $iptables -t nat -F $czfthirdindex >> $script |
107 | echo $iptables -t nat -A $czfsecondindex -s `ipcalc -n $czfip/26|grep Network|cut -f 4 -d \ ` -o eth1 -j $czfthirdindex >> $script |
108 | fi |
109 | |
110 | echo $iptables -t nat -A $czfthirdindex -s $czfip/32 -o eth1 -j SNAT --to-source $pubip >> $script |
111 | echo $iptables -t nat -A $czfthirdindex -s $czfip/32 -o eth1 -j ACCEPT >> $script |
112 | |
113 | echo -n . |
114 | echo "echo -n ." >>$script |
115 | done |
116 | echo " done." |
117 | |
118 | # =============================================================== |
119 | # Dashboard rules |
a4f661fc |
120 | # =============================================================== |
121 | |
122 | echo -n "Generating dashboard index rules " |
123 | |
f035230d |
124 | for czfip in `grep ^10[.] $etchosts|grep dashboard-|cut -f 1` |
a4f661fc |
125 | do |
126 | czffirstindex=dash_`ipcalc -n $czfip/20|grep Network|cut -f 4 -d \ |tr [./] _` |
127 | czfsecondindex=dash_`ipcalc -n $czfip/23|grep Network|cut -f 4 -d \ |tr [./] _` |
128 | czfthirdindex=dash_`ipcalc -n $czfip/26|grep Network|cut -f 4 -d \ |tr [./] _` |
129 | |
130 | if ! grep $czffirstindex $script > /dev/null |
131 | then |
132 | echo $iptables -t nat -N $czffirstindex >> $script |
133 | echo $iptables -t nat -F $czffirstindex >> $script |
134 | echo $iptables -t nat -A PREROUTING -s `ipcalc -n $czfip/20|grep Network|cut -f 4 -d \ ` -i eth0 -j $czffirstindex >> $script |
135 | fi |
136 | |
137 | if ! grep $czfsecondindex $script > /dev/null |
138 | then |
139 | echo $iptables -t nat -N $czfsecondindex >> $script |
140 | echo $iptables -t nat -F $czfsecondindex >> $script |
141 | echo $iptables -t nat -A $czffirstindex -s `ipcalc -n $czfip/23|grep Network|cut -f 4 -d \ ` -i eth0 -j $czfsecondindex >> $script |
142 | fi |
143 | |
144 | if ! grep $czfthirdindex $script > /dev/null |
145 | then |
146 | echo $iptables -t nat -N $czfthirdindex >> $script |
147 | echo $iptables -t nat -F $czfthirdindex >> $script |
148 | echo $iptables -t nat -A $czfsecondindex -s `ipcalc -n $czfip/26|grep Network|cut -f 4 -d \ ` -i eth0 -j $czfthirdindex >> $script |
149 | fi |
150 | |
151 | echo $iptables -t nat -A $czfthirdindex -s $czfip -d ! 10.0.0.0/8 -p tcp --dport 80 -j REDIRECT --to 8080 >> $script |
152 | echo $iptables -t nat -A $czfthirdindex -s $czfip -d ! 10.0.0.0/8 -p tcp --dport 3128 -j REDIRECT --to 8080 >> $script |
153 | echo $iptables -t nat -A $czfthirdindex -s $czfip -d ! 10.0.0.0/8 -p tcp --dport 8080 -j ACCEPT >> $script |
154 | echo $iptables -t nat -A $czfthirdindex -s $czfip -d ! 10.0.0.0/8 -j DROP >> $script |
155 | |
156 | echo -n . |
157 | echo "echo -n ." >>$script |
158 | |
159 | done |
160 | echo " done." |
161 | |
162 | chmod a+x $script |