Mercurial > dropbear
view release.sh @ 1790:42745af83b7d
Introduce extra delay before closing unauthenticated sessions
To make it harder for attackers, introduce a delay to keep an
unauthenticated session open a bit longer, thus blocking a connection
slot until after the delay.
Without this, while there is a limit on the amount of attempts an attacker
can make at the same time (MAX_UNAUTH_PER_IP), the time taken by dropbear to
handle one attempt is still short and thus for each of the allowed parallel
attempts many attempts can be chained one after the other. The attempt rate
is then:
"MAX_UNAUTH_PER_IP / <process time of one attempt>".
With the delay, this rate becomes:
"MAX_UNAUTH_PER_IP / UNAUTH_CLOSE_DELAY".
author | Thomas De Schampheleire <thomas.de_schampheleire@nokia.com> |
---|---|
date | Wed, 15 Feb 2017 13:53:04 +0100 |
parents | e2e4929d057b |
children | 552bb9b4f16a |
line wrap: on
line source
#!/bin/sh VERSION=$(echo '#include "sysoptions.h"\necho DROPBEAR_VERSION' | cpp - | sh) echo Releasing version "$VERSION" ... if ! head -n1 CHANGES | grep -q $VERSION ; then echo "CHANGES needs updating" exit 1 fi if ! head -n1 debian/changelog | grep -q $VERSION ; then echo "debian/changelog needs updating" exit 1 fi head -n1 CHANGES #sleep 3 RELDIR=$PWD/../dropbear-$VERSION ARCHIVE=${RELDIR}.tar.bz2 if test -e $RELDIR; then echo "$RELDIR exists" exit 1 fi if test -e $ARCHIVE; then echo "$ARCHIVE exists" exit 1 fi hg archive "$RELDIR" || exit 2 (cd "$RELDIR" && autoconf && autoheader) || exit 2 rm -r "$RELDIR/autom4te.cache" || exit 2 rm "$RELDIR/.hgtags" (cd "$RELDIR/.." && tar cjf $ARCHIVE `basename "$RELDIR"`) || exit 2 ls -l $ARCHIVE openssl sha256 $ARCHIVE echo Done to echo "$ARCHIVE" echo Sign it with echo gpg2 --detach-sign -a -u F29C6773 "$ARCHIVE"