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Add an example hosts.allow for the (base system) tcp_wrappers.

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Anyone with good ideas for this is welcome to contribute.
This commit is contained in:
Mark Murray 1999-03-28 10:47:26 +00:00
parent ccaba9fc2b
commit f8b0e8c9ff
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=45088
2 changed files with 52 additions and 4 deletions
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8
etc/Makefile
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@ -1,12 +1,12 @@
# from: @(#)Makefile 5.11 (Berkeley) 5/21/91
# $Id: Makefile,v 1.193 1999/02/11 16:30:54 brian Exp $
# $Id: Makefile,v 1.194 1999/02/12 20:51:38 dillon Exp $
SUBDIR= sendmail
BIN1= aliases amd.map crontab csh.cshrc csh.login csh.logout dm.conf \
fbtab ftpusers gettytab group hosts host.conf hosts.equiv hosts.lpd \
inetd.conf auth.conf login.conf login.access motd modems networks \
newsyslog.conf pam.conf phones pccard.conf.sample \
fbtab ftpusers gettytab group hosts hosts.allow host.conf hosts.equiv \
hosts.lpd inetd.conf auth.conf login.conf login.access motd modems \
networks newsyslog.conf pam.conf phones pccard.conf.sample \
printcap profile protocols \
rc rc.atm rc.devfs rc.firewall rc.isdn rc.network rc.pccard \
rc.serial rc.shutdown rc.diskless1 rc.diskless2 \

48
etc/hosts.allow Normal file
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@ -0,0 +1,48 @@
#
# hosts.allow access control file for "tcp wrapped" apps.
# $Id$
#
# NOTE: The hosts.deny file is not longer used. Instead, put both 'allow'
# and 'deny' rules in the hosts.allow file.
# see hosts_options(5) for the format of this file.
# hosts_access(5) no longer fully applies.
# This is an example! You will need to modify it for your specific
# requirements!
# Start by allowing everything (this prevents the rest of the file
# from working, so remove it when you need protection).
ALL : ALL : allow
# Wrapping sshd(8) is not normally a good idea, but if you
# need to do it, here's how
#sshd : .evil.hacker.org : deny
# Prevent those with no reverse DNS from connecting.
ALL : PARANOID : RFC931 20 : deny
# Allow anything from localhost
ALL : localhost : allow
# Sendmail can help protect you against spammers and relay-rapers
sendmail : localhost : allow
sendmail : .mydomain.com : allow
sendmail : .evil.spamnest.org : deny
sendmail : ALL : allow
# Provide a small amount of protection for ftpd
ftpd : .warez.d00d.org : deny
ftpd : ALL : allow
# You need to be clever with finger; do _not_ backfinger!! You can easily
# start a "finger war".
fingerd : ALL \
: spawn (echo Finger. | \
/usr/bin/mail -s "tcpd\: %u@%h[%a] fingered me!" root) & \
: deny
# The rest of the daemons are protected. Backfinger and log by email.
ALL : ALL \
: severity auth.info : spawn (/usr/bin/safe_finger -l @%h | \
/usr/bin/mail -s "tcpd\: %u@%h[%a] tried to use %d (denied)" root) & \
: twist /bin/echo "You are not welcome to use %d from %h."