1# $OpenBSD: forwarding.sh,v 1.4 2002/03/15 13:08:56 markus Exp $ 2# Placed in the Public Domain. 3 4tid="local and remote forwarding" 5 6start_sshd 7 8base=33 9last=$PORT 10fwd="" 11for j in 0 1 2; do 12 for i in 0 1 2; do 13 a=$base$j$i 14 b=`expr $a + 50` 15 c=$last 16 # fwd chain: $a -> $b -> $c 17 fwd="$fwd -L$a:127.0.0.1:$b -R$b:127.0.0.1:$c" 18 last=$a 19 done 20done 21for p in 1 2; do 22 q=`expr 3 - $p` 23 trace "start forwarding, fork to background" 24 ${SSH} -$p -F $OBJ/ssh_config -f $fwd somehost sleep 10 25 26 trace "transfer over forwarded channels and check result" 27 ${SSH} -$q -F $OBJ/ssh_config -p$last -o 'ConnectionAttempts=4' \ 28 somehost cat /bin/ls > $OBJ/ls.copy 29 test -f $OBJ/ls.copy || fail "failed copy /bin/ls" 30 cmp /bin/ls $OBJ/ls.copy || fail "corrupted copy of /bin/ls" 31 32 sleep 10 33done 34