2 iptables
="/sbin/iptables"
3 iptablesrestore
="/sbin/iptables-restore"
4 ifconfig
="/sbin/ifconfig"
8 #pimp files must be generated by optional-tools/make-pimp utility
9 pimp_2way_nat
="/dev/shm/pimp-2way-nat.tmp"
10 pimp_snat
="/dev/shm/pimp-snat.tmp"
11 etchosts
="/mnt/mtdblock0/hosts"
12 restoretmp
="/dev/shm/iptables-restore.tmp"
13 restoredata
="/mnt/mtdblock0/iptables-restore.in"
25 echo "*nat" > $restoretmp
26 echo ":PREROUTING ACCEPT [0:0]" >> $restoretmp
27 echo ":POSTROUTING ACCEPT [0:0]" >> $restoretmp
28 echo ":OUTPUT ACCEPT [0:0]" >> $restoretmp
30 # ===============================================================
31 # Symetrical SNAT-DNAT using indexed iptables
32 # ===============================================================
34 echo -n "Generating new iptables-restore data - two way SNAT/DNAT "
36 for czfip
in `$grep -v ^# $pimp_2way_nat|$cut -f 1 -d " "`
38 pubip
=`$grep "$czfip " $pimp_2way_nat|$cut -f 2 -d " "`
39 czffirstindex
=priv_
`ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
40 czfsecondindex
=priv_
`ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
41 czfthirdindex
=priv_
`ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
42 czffourthindex
=priv_
`ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
43 pubfirstindex
=pub_
`ipcalc -n $pubip/$pubfirstbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
44 pubsecondindex
=pub_
`ipcalc -n $pubip/$pubsecondbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
46 if ! $grep $czffirstindex $restoretmp > /dev
/null
48 echo :$czffirstindex "- [0:0]" >> $restoretmp
49 echo -A POSTROUTING
-d ! 10.0.0.0/8 -s `ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan1 -j $czffirstindex >> $restoretmp
50 echo -A POSTROUTING
-d ! 10.0.0.0/8 -s `ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan2 -j $czffirstindex >> $restoretmp
51 echo -A POSTROUTING
-d ! 10.0.0.0/8 -s `ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan3 -j $czffirstindex >> $restoretmp
52 echo -A POSTROUTING
-d ! 10.0.0.0/8 -s `ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan4 -j $czffirstindex >> $restoretmp
55 if ! $grep $czfsecondindex $restoretmp > /dev
/null
57 echo :$czfsecondindex "- [0:0]" >> $restoretmp
58 echo -A $czffirstindex -s `ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan1 -j $czfsecondindex >> $restoretmp
59 echo -A $czffirstindex -s `ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan2 -j $czfsecondindex >> $restoretmp
60 echo -A $czffirstindex -s `ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan3 -j $czfsecondindex >> $restoretmp
61 echo -A $czffirstindex -s `ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan4 -j $czfsecondindex >> $restoretmp
64 if ! $grep $czfthirdindex $restoretmp > /dev
/null
66 echo :$czfthirdindex "- [0:0]" >> $restoretmp
67 echo -A $czfsecondindex -s `ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan1 -j $czfthirdindex >> $restoretmp
68 echo -A $czfsecondindex -s `ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan2 -j $czfthirdindex >> $restoretmp
69 echo -A $czfsecondindex -s `ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan3 -j $czfthirdindex >> $restoretmp
70 echo -A $czfsecondindex -s `ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan4 -j $czfthirdindex >> $restoretmp
73 if ! $grep $czffourthindex $restoretmp > /dev
/null
75 echo :$czffourthindex "- [0:0]" >> $restoretmp
76 echo -A $czfthirdindex -s `ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan1 -j $czffourthindex >> $restoretmp
77 echo -A $czfthirdindex -s `ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan2 -j $czffourthindex >> $restoretmp
78 echo -A $czfthirdindex -s `ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan3 -j $czffourthindex >> $restoretmp
79 echo -A $czfthirdindex -s `ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan4 -j $czffourthindex >> $restoretmp
82 if ! $grep $pubfirstindex $restoretmp > /dev
/null
84 echo :$pubfirstindex "- [0:0]" >> $restoretmp
85 echo -A PREROUTING
-i $wan1 -d `ipcalc -n $pubip/$pubfirstbitmask|$grep Network|$cut -f 4 -d \ ` -j $pubfirstindex >> $restoretmp
86 echo -A PREROUTING
-i $wan2 -d `ipcalc -n $pubip/$pubfirstbitmask|$grep Network|$cut -f 4 -d \ ` -j $pubfirstindex >> $restoretmp
87 echo -A PREROUTING
-i $wan3 -d `ipcalc -n $pubip/$pubfirstbitmask|$grep Network|$cut -f 4 -d \ ` -j $pubfirstindex >> $restoretmp
88 echo -A PREROUTING
-i $wan4 -d `ipcalc -n $pubip/$pubfirstbitmask|$grep Network|$cut -f 4 -d \ ` -j $pubfirstindex >> $restoretmp
91 if ! $grep $pubsecondindex $restoretmp > /dev
/null
93 echo :$pubsecondindex "- [0:0]" >> $restoretmp
94 echo -A $pubfirstindex -i $wan1 -d `ipcalc -n $pubip/$pubsecondbitmask|$grep Network|$cut -f 4 -d \ ` -j $pubsecondindex >> $restoretmp
95 echo -A $pubfirstindex -i $wan2 -d `ipcalc -n $pubip/$pubsecondbitmask|$grep Network|$cut -f 4 -d \ ` -j $pubsecondindex >> $restoretmp
96 echo -A $pubfirstindex -i $wan3 -d `ipcalc -n $pubip/$pubsecondbitmask|$grep Network|$cut -f 4 -d \ ` -j $pubsecondindex >> $restoretmp
97 echo -A $pubfirstindex -i $wan4 -d `ipcalc -n $pubip/$pubsecondbitmask|$grep Network|$cut -f 4 -d \ ` -j $pubsecondindex >> $restoretmp
100 echo -A $pubsecondindex -i $wan1 -d $pubip/32 -j DNAT
--to-destination $czfip >> $restoretmp
101 echo -A $pubsecondindex -i $wan2 -d $pubip/32 -j DNAT
--to-destination $czfip >> $restoretmp
102 echo -A $pubsecondindex -i $wan3 -d $pubip/32 -j DNAT
--to-destination $czfip >> $restoretmp
103 echo -A $pubsecondindex -i $wan4 -d $pubip/32 -j DNAT
--to-destination $czfip >> $restoretmp
105 echo -A $czffourthindex -s $czfip/32 -o $wan1 -j SNAT
--to-source $pubip >> $restoretmp
106 echo -A $czffourthindex -s $czfip/32 -o $wan2 -j SNAT
--to-source $pubip >> $restoretmp
107 echo -A $czffourthindex -s $czfip/32 -o $wan3 -j SNAT
--to-source $pubip >> $restoretmp
108 echo -A $czffourthindex -s $czfip/32 -o $wan4 -j SNAT
--to-source $pubip >> $restoretmp
114 echo -n "Generating new iptables-restore data - one way SNAT "
116 # ===============================================================
117 # SNAT only using indexed iptables (should be rather function, hmm)
118 # ===============================================================
120 for czfip
in `$grep -v ^# $pimp_snat|$cut -f 1 -d " "`
122 pubip
=`$grep "$czfip " $pimp_snat|$cut -f 2 -d " "`
123 czffirstindex
=priv_
`ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
124 czfsecondindex
=priv_
`ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
125 czfthirdindex
=priv_
`ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
126 czffourthindex
=priv_
`ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ |tr [./] _`
128 if ! $grep $czffirstindex $restoretmp > /dev
/null
130 echo :$czffirstindex "- [0:0]" >> $restoretmp
131 echo -A POSTROUTING
-d ! 10.0.0.0/8 -s `ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan1 -j $czffirstindex >> $restoretmp
132 echo -A POSTROUTING
-d ! 10.0.0.0/8 -s `ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan2 -j $czffirstindex >> $restoretmp
133 echo -A POSTROUTING
-d ! 10.0.0.0/8 -s `ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan3 -j $czffirstindex >> $restoretmp
134 echo -A POSTROUTING
-d ! 10.0.0.0/8 -s `ipcalc -n $czfip/$czffirstbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan4 -j $czffirstindex >> $restoretmp
137 if ! $grep $czfsecondindex $restoretmp > /dev
/null
139 echo :$czfsecondindex "- [0:0]" >> $restoretmp
140 echo -A $czffirstindex -s `ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan1 -j $czfsecondindex >> $restoretmp
141 echo -A $czffirstindex -s `ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan2 -j $czfsecondindex >> $restoretmp
142 echo -A $czffirstindex -s `ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan3 -j $czfsecondindex >> $restoretmp
143 echo -A $czffirstindex -s `ipcalc -n $czfip/$czfsecondbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan4 -j $czfsecondindex >> $restoretmp
146 if ! $grep $czfthirdindex $restoretmp > /dev
/null
148 echo :$czfthirdindex "- [0:0]" >> $restoretmp
149 echo -A $czfsecondindex -s `ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan1 -j $czfthirdindex >> $restoretmp
150 echo -A $czfsecondindex -s `ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan2 -j $czfthirdindex >> $restoretmp
151 echo -A $czfsecondindex -s `ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan3 -j $czfthirdindex >> $restoretmp
152 echo -A $czfsecondindex -s `ipcalc -n $czfip/$czfthirdbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan4 -j $czfthirdindex >> $restoretmp
155 if ! $grep $czffourthindex $restoretmp > /dev
/null
157 echo :$czffourthindex "- [0:0]" >> $restoretmp
158 echo -A $czfthirdindex -s `ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan1 -j $czffourthindex >> $restoretmp
159 echo -A $czfthirdindex -s `ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan2 -j $czffourthindex >> $restoretmp
160 echo -A $czfthirdindex -s `ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan3 -j $czffourthindex >> $restoretmp
161 echo -A $czfthirdindex -s `ipcalc -n $czfip/$czffourthbitmask|$grep Network|$cut -f 4 -d \ ` -o $wan4 -j $czffourthindex >> $restoretmp
164 echo -A $czffourthindex -s $czfip/32 -o $wan1 -j SNAT
--to-source $pubip >> $restoretmp
165 echo -A $czffourthindex -s $czfip/32 -o $wan2 -j SNAT
--to-source $pubip >> $restoretmp
166 echo -A $czffourthindex -s $czfip/32 -o $wan3 -j SNAT
--to-source $pubip >> $restoretmp
167 echo -A $czffourthindex -s $czfip/32 -o $wan4 -j SNAT
--to-source $pubip >> $restoretmp
173 echo COMMIT
>> $restoretmp
174 mv $restoretmp $restoredata
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