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- #! /bin/sh
- ## duplicate DaveG's ident-scan thingie using netcat. Oooh, he'll be pissed.
- ## args: target port [port port port ...]
- ## hose stdout *and* stderr together.
- ##
- ## advantages: runs slower than ident-scan, giving remote inetd less cause
- ## for alarm, and only hits the few known daemon ports you specify.
- ## disadvantages: requires numeric-only port args, the output sleazitude,
- ## and won't work for r-services when coming from high source ports.
-
- case "${2}" in
- "" ) echo needs HOST and at least one PORT ; exit 1 ;;
- esac
-
- # ping 'em once and see if they *are* running identd
- nc -z -w 9 "$1" 113 || { echo "oops, $1 isn't running identd" ; exit 0 ; }
-
- # generate a randomish base port
- RP=`expr $$ % 999 + 31337`
-
- TRG="$1"
- shift
-
- while test "$1" ; do
- nc -v -w 8 -p ${RP} "$TRG" ${1} < /dev/null > /dev/null &
- PROC=$!
- sleep 3
- echo "${1},${RP}" | nc -w 4 -r "$TRG" 113 2>&1
- sleep 2
- # does this look like a lamer script or what...
- kill -HUP $PROC
- RP=`expr ${RP} + 1`
- shift
- done
-
-