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Hi all. Here's one it took me a respectable amount of time to find out, (I'm
not an expert on Linux networking), I guess the solution could help other
peoples outside of english language countries.
I had successfully configured my iptables on a Mandrake 8.2 (kernel 2.4.18),
using both Simple-Masquerading Howto and TOS MASQ Howto's basic ruleset.
However when I tried the "strong" ruleset it failed on a "bad parameter"
error at the following line :
# Allow any related traffic coming back to the MASQ server in
#
$IPTABLES -A INPUT -i $EXTIF -s $UNIVERSE -d $EXTIP -m state --state
ESTABLISHED,RELATED -j ACCEPT
Tracing it, the reason for this error is that $EXTIP is empty. At the
beginning of the script, there's a line for detecting a dynamic IP :
# Determine the external IP automatically:
# ----------------------------------------
#
EXTIP="`$IFCONFIG $EXTIF | $GREP 'inet addr' | $AWK '{print $2}' | \
$SED -e 's/.*://'`"
Unfortunately, in a french localized ifconfig says "inet adr:" and not "inet
addr:". (In french, "address" translates into "adresse".)
grep fails to find a match and EXTIP is empty.
So I changed the line for this :
EXTIP="`$IFCONFIG $EXTIF | $GREP 'inet' | grep ':' | $AWK '{print $2}' |
\
$SED -e 's/.*://'`"
Any other I guess there are little chance that "inet" and ":" change in any
translated version of ifconfig.
Regards.
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