/sbin/arptables-restore is in arptables 0.0.3.4-1build1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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 | #!/usr/bin/perl -w
# A script that imports text arptables rules. Similar to iptables-restore.
use strict;
my $tool = "/sbin/arptables";
my $table;
my $rc;
my $line;
# ==============================
# clear_arptables
# - sets policy to accept
# - flushes chains
# - removes custom chains
# ==============================
sub clear_arptables {
$rc = `$tool -P INPUT ACCEPT`;
unless($? == 0) { print "ERROR: $rc\n"; exit -1 };
$rc = `$tool -P FORWARD ACCEPT`;
unless($? == 0) { print "ERROR: $rc\n"; exit -1 };
$rc = `$tool -P OUTPUT ACCEPT`;
unless($? == 0) { print "ERROR: $rc\n"; exit -1 };
$rc = `$tool -F`;
unless($? == 0) { print "ERROR: $rc\n"; exit -1 };
$rc = `$tool -L`;
unless($? == 0) { print "ERROR: $rc\n"; exit -1 };
foreach $line (split("\n",$rc)) {
unless ($line =~ m/Chain\s(.*?)\s\(.*references\)/) { next; }
$rc = `$tool -X $1`;
unless($? == 0) { print "ERROR: $rc\n"; exit -1 };
}
}
# ==============================
unless (-x $tool) { print "ERROR: $tool isn't executable\n"; exit -1; };
&clear_arptables();
$line = 0;
while(<>) {
$line++;
if(m/^#/) { next; };
if(m/^$/) { next; };
if(m/^\*(.*)/) {
$table = $1;
next;
}
# Process a chain directive
if(m/^\:(.*?)\s(.*)/) {
# is it a user or a built in chain ?
if ("$2" eq "-") {
$rc = `$tool -t $table -N $1`;
unless($? == 0) {print "ERROR(line $line): $rc\n"; exit -1};
next;
}
$rc = `$tool -t $table -P $1 $2`;
unless($? == 0) {print "ERROR(line $line): $rc\n"; exit -1};
next;
}
$rc = `$tool -t $table $_`;
unless($? == 0) {print "ERROR(line $line): $rc\n"; exit -1};
}
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