86d37066 |
1 | #!/bin/bash |
2 | iptables="/sbin/iptables" |
3 | iptablesrestore="/sbin/iptables-restore" |
4 | ifconfig="/sbin/ifconfig" |
5 | |
6 | #pimp files must be generated by optional-tools/make-pimp utility |
7 | pimp_2way_nat="/mnt/mtdblock0/pimp-2way-nat.tmp" |
8 | pimp_snat="/mnt/mtdblock0/pimp-snat.tmp" |
9 | etchosts="/mnt/mtdblock0/hosts" |
10 | restoredata="/mnt/mtdblock0/iptables-restore.in" |
11 | wan1="vlan770" |
12 | wan2="vlan771" |
dec30356 |
13 | #just comment-out all lines mentioning wan3 on two-interface gateways |
86d37066 |
14 | wan3="vlan772" |
15 | |
16 | echo "*nat" > $restoredata |
17 | echo ":PREROUTING ACCEPT [0:0]" >> $restoredata |
18 | echo ":POSTROUTING ACCEPT [0:0]" >> $restoredata |
19 | echo ":OUTPUT ACCEPT [0:0]" >> $restoredata |
20 | |
21 | # =============================================================== |
22 | # Symetrical SNAT-DNAT using indexed iptables |
23 | # =============================================================== |
24 | |
25 | echo -n "Generating new iptables-restore data - two way SNAT/DNAT " |
26 | |
27 | for czfip in `grep -v ^# $pimp_2way_nat|cut -f 1 -d " "` |
28 | do |
29 | pubip=`grep "$czfip " $pimp_2way_nat|cut -f 2 -d " "` |
30 | czffirstindex=priv_`ipcalc -n $czfip/20|grep Network|cut -f 4 -d \ |tr [./] _` |
31 | czfsecondindex=priv_`ipcalc -n $czfip/23|grep Network|cut -f 4 -d \ |tr [./] _` |
32 | czfthirdindex=priv_`ipcalc -n $czfip/26|grep Network|cut -f 4 -d \ |tr [./] _` |
33 | pubfirstindex=pub_`ipcalc -n $pubip/27|grep Network|cut -f 4 -d \ |tr [./] _` |
34 | pubsecondindex=pub_`ipcalc -n $pubip/29|grep Network|cut -f 4 -d \ |tr [./] _` |
35 | |
36 | if ! grep $czffirstindex $restoredata > /dev/null |
37 | then |
38 | echo :$czffirstindex "- [0:0]" >> $restoredata |
39 | echo -A POSTROUTING -d ! 10.0.0.0/8 -s `ipcalc -n $czfip/20|grep Network|cut -f 4 -d \ ` -o $wan1 -j $czffirstindex >> $restoredata |
40 | echo -A POSTROUTING -d ! 10.0.0.0/8 -s `ipcalc -n $czfip/20|grep Network|cut -f 4 -d \ ` -o $wan2 -j $czffirstindex >> $restoredata |
41 | echo -A POSTROUTING -d ! 10.0.0.0/8 -s `ipcalc -n $czfip/20|grep Network|cut -f 4 -d \ ` -o $wan3 -j $czffirstindex >> $restoredata |
42 | fi |
43 | |
44 | if ! grep $czfsecondindex $restoredata > /dev/null |
45 | then |
46 | echo :$czfsecondindex "- [0:0]" >> $restoredata |
47 | echo -A $czffirstindex -s `ipcalc -n $czfip/23|grep Network|cut -f 4 -d \ ` -o $wan1 -j $czfsecondindex >> $restoredata |
48 | echo -A $czffirstindex -s `ipcalc -n $czfip/23|grep Network|cut -f 4 -d \ ` -o $wan2 -j $czfsecondindex >> $restoredata |
49 | echo -A $czffirstindex -s `ipcalc -n $czfip/23|grep Network|cut -f 4 -d \ ` -o $wan3 -j $czfsecondindex >> $restoredata |
50 | fi |
51 | |
52 | if ! grep $czfthirdindex $restoredata > /dev/null |
53 | then |
54 | echo :$czfthirdindex "- [0:0]" >> $restoredata |
55 | echo -A $czfsecondindex -s `ipcalc -n $czfip/26|grep Network|cut -f 4 -d \ ` -o $wan1 -j $czfthirdindex >> $restoredata |
56 | echo -A $czfsecondindex -s `ipcalc -n $czfip/26|grep Network|cut -f 4 -d \ ` -o $wan2 -j $czfthirdindex >> $restoredata |
57 | echo -A $czfsecondindex -s `ipcalc -n $czfip/26|grep Network|cut -f 4 -d \ ` -o $wan3 -j $czfthirdindex >> $restoredata |
58 | fi |
59 | |
60 | if ! grep $pubfirstindex $restoredata > /dev/null |
61 | then |
62 | echo :$pubfirstindex "- [0:0]" >> $restoredata |
63 | echo -A PREROUTING -i $wan1 -d `ipcalc -n $pubip/27|grep Network|cut -f 4 -d \ ` -j $pubfirstindex >> $restoredata |
64 | echo -A PREROUTING -i $wan2 -d `ipcalc -n $pubip/27|grep Network|cut -f 4 -d \ ` -j $pubfirstindex >> $restoredata |
65 | echo -A PREROUTING -i $wan3 -d `ipcalc -n $pubip/27|grep Network|cut -f 4 -d \ ` -j $pubfirstindex >> $restoredata |
66 | fi |
67 | |
68 | if ! grep $pubsecondindex $restoredata > /dev/null |
69 | then |
70 | echo :$pubsecondindex "- [0:0]" >> $restoredata |
71 | echo -A $pubfirstindex -i $wan1 -d `ipcalc -n $pubip/29|grep Network|cut -f 4 -d \ ` -j $pubsecondindex >> $restoredata |
72 | echo -A $pubfirstindex -i $wan2 -d `ipcalc -n $pubip/29|grep Network|cut -f 4 -d \ ` -j $pubsecondindex >> $restoredata |
73 | echo -A $pubfirstindex -i $wan3 -d `ipcalc -n $pubip/29|grep Network|cut -f 4 -d \ ` -j $pubsecondindex >> $restoredata |
74 | fi |
75 | |
76 | echo -A $pubsecondindex -i $wan1 -d $pubip/32 -j DNAT --to-destination $czfip >> $restoredata |
77 | echo -A $pubsecondindex -i $wan2 -d $pubip/32 -j DNAT --to-destination $czfip >> $restoredata |
78 | echo -A $pubsecondindex -i $wan3 -d $pubip/32 -j DNAT --to-destination $czfip >> $restoredata |
79 | echo -A $pubsecondindex -i $wan1 -d $pubip/32 -j ACCEPT >> $restoredata |
80 | echo -A $pubsecondindex -i $wan2 -d $pubip/32 -j ACCEPT >> $restoredata |
81 | echo -A $pubsecondindex -i $wan3 -d $pubip/32 -j ACCEPT >> $restoredata |
82 | |
83 | |
84 | echo -A $czfthirdindex -s $czfip/32 -o $wan1 -j SNAT --to-source $pubip >> $restoredata |
85 | echo -A $czfthirdindex -s $czfip/32 -o $wan2 -j SNAT --to-source $pubip >> $restoredata |
86 | echo -A $czfthirdindex -s $czfip/32 -o $wan3 -j SNAT --to-source $pubip >> $restoredata |
87 | echo -A $czfthirdindex -s $czfip/32 -o $wan1 -j ACCEPT >> $restoredata |
88 | echo -A $czfthirdindex -s $czfip/32 -o $wan2 -j ACCEPT >> $restoredata |
89 | echo -A $czfthirdindex -s $czfip/32 -o $wan3 -j ACCEPT >> $restoredata |
90 | |
91 | echo -n . |
92 | done |
93 | echo " done." |
94 | |
95 | echo -n "Generating new iptables-restore data - one way SNAT " |
96 | |
97 | # =============================================================== |
98 | # SNAT only using indexed iptables (should be rather function, hmm) |
99 | # =============================================================== |
100 | |
101 | for czfip in `grep -v ^# $pimp_snat|cut -f 1 -d " "` |
102 | do |
103 | pubip=`grep "$czfip " $pimp_snat|cut -f 2 -d " "` |
104 | czffirstindex=priv_`ipcalc -n $czfip/20|grep Network|cut -f 4 -d \ |tr [./] _` |
105 | czfsecondindex=priv_`ipcalc -n $czfip/23|grep Network|cut -f 4 -d \ |tr [./] _` |
106 | czfthirdindex=priv_`ipcalc -n $czfip/26|grep Network|cut -f 4 -d \ |tr [./] _` |
107 | |
108 | if ! grep $czffirstindex $restoredata > /dev/null |
109 | then |
110 | echo :$czffirstindex "- [0:0]" >> $restoredata |
111 | echo -A POSTROUTING -d ! 10.0.0.0/8 -s `ipcalc -n $czfip/20|grep Network|cut -f 4 -d \ ` -o $wan1 -j $czffirstindex >> $restoredata |
112 | echo -A POSTROUTING -d ! 10.0.0.0/8 -s `ipcalc -n $czfip/20|grep Network|cut -f 4 -d \ ` -o $wan2 -j $czffirstindex >> $restoredata |
113 | echo -A POSTROUTING -d ! 10.0.0.0/8 -s `ipcalc -n $czfip/20|grep Network|cut -f 4 -d \ ` -o $wan3 -j $czffirstindex >> $restoredata |
114 | fi |
115 | |
116 | if ! grep $czfsecondindex $restoredata > /dev/null |
117 | then |
118 | echo :$czfsecondindex "- [0:0]" >> $restoredata |
119 | echo -A $czffirstindex -s `ipcalc -n $czfip/23|grep Network|cut -f 4 -d \ ` -o $wan1 -j $czfsecondindex >> $restoredata |
120 | echo -A $czffirstindex -s `ipcalc -n $czfip/23|grep Network|cut -f 4 -d \ ` -o $wan2 -j $czfsecondindex >> $restoredata |
121 | echo -A $czffirstindex -s `ipcalc -n $czfip/23|grep Network|cut -f 4 -d \ ` -o $wan3 -j $czfsecondindex >> $restoredata |
122 | fi |
123 | |
124 | if ! grep $czfthirdindex $restoredata > /dev/null |
125 | then |
126 | echo :$czfthirdindex "- [0:0]" >> $restoredata |
127 | echo -A $czfsecondindex -s `ipcalc -n $czfip/26|grep Network|cut -f 4 -d \ ` -o $wan1 -j $czfthirdindex >> $restoredata |
128 | echo -A $czfsecondindex -s `ipcalc -n $czfip/26|grep Network|cut -f 4 -d \ ` -o $wan2 -j $czfthirdindex >> $restoredata |
129 | echo -A $czfsecondindex -s `ipcalc -n $czfip/26|grep Network|cut -f 4 -d \ ` -o $wan3 -j $czfthirdindex >> $restoredata |
130 | fi |
131 | |
132 | echo -A $czfthirdindex -s $czfip/32 -o $wan1 -j SNAT --to-source $pubip >> $restoredata |
133 | echo -A $czfthirdindex -s $czfip/32 -o $wan2 -j SNAT --to-source $pubip >> $restoredata |
134 | echo -A $czfthirdindex -s $czfip/32 -o $wan3 -j SNAT --to-source $pubip >> $restoredata |
135 | echo -A $czfthirdindex -s $czfip/32 -o $wan1 -j ACCEPT >> $restoredata |
136 | echo -A $czfthirdindex -s $czfip/32 -o $wan2 -j ACCEPT >> $restoredata |
137 | echo -A $czfthirdindex -s $czfip/32 -o $wan3 -j ACCEPT >> $restoredata |
138 | |
139 | echo -n . |
140 | done |
141 | echo " done." |
142 | |
143 | echo COMMIT >> $restoredata |