home *** CD-ROM | disk | FTP | other *** search
- #!/bin/sh -e
-
- # must be sourced at the top level or $@ will be lost when $0 is executed
- if [ "$1" = "configure" ]; then
- . /usr/share/debconf/confmodule
- fi
-
- create_hosts_files() {
- if [ -e /etc/hosts.allow -a -e /etc/hosts.deny ]; then
- return 0
- fi
-
- # The default paranoid mode, in order to avoid breaking expected
- # behaviour is 'false', however, if debconf is used to set this to
- # true then we add a more restrictive definition
- PARANOID="false"
-
- db_get tcpd/paranoid-mode || true
- PARANOID="$RET"
-
- if [ ! -e /etc/hosts.allow ]; then
- cat > /etc/hosts.allow <<EOF
- # /etc/hosts.allow: list of hosts that are allowed to access the system.
- # See the manual pages hosts_access(5) and hosts_options(5).
- #
- # Example: ALL: LOCAL @some_netgroup
- # ALL: .foobar.edu EXCEPT terminalserver.foobar.edu
- #
- # If you're going to protect the portmapper use the name "portmap" for the
- # daemon name. Remember that you can only use the keyword "ALL" and IP
- # addresses (NOT host or domain names) for the portmapper, as well as for
- # rpc.mountd (the NFS mount daemon). See portmap(8) and rpc.mountd(8)
- # for further information.
- #
- EOF
-
- if [ "$PARANOID" = "true" ]; then
- cat >> /etc/hosts.allow <<EOF
-
- ALL: 127.0.0.1
-
- # Since all access will be restriced in hosts.deny you might want to give
- # access to some machines to some common (remote) services:
- # sshd: aaaa.bbbb.cccc.ddd
- EOF
- fi
- fi
-
- if [ ! -e /etc/hosts.deny ]; then
- cat > /etc/hosts.deny <<EOF
- # /etc/hosts.deny: list of hosts that are _not_ allowed to access the system.
- # See the manual pages hosts_access(5) and hosts_options(5).
- #
- # Example: ALL: some.host.name, .some.domain
- # ALL EXCEPT in.fingerd: other.host.name, .other.domain
- #
- # If you're going to protect the portmapper use the name "portmap" for the
- # daemon name. Remember that you can only use the keyword "ALL" and IP
- # addresses (NOT host or domain names) for the portmapper, as well as for
- # rpc.mountd (the NFS mount daemon). See portmap(8) and rpc.mountd(8)
- # for further information.
- #
- # The PARANOID wildcard matches any host whose name does not match its
- # address.
- EOF
-
- if [ "$PARANOID" = "true" ]; then
- cat >> /etc/hosts.deny <<EOF
-
- # We don't trust anybody, so never allow access.
- ALL: ALL
- EOF
- else
- cat >> /etc/hosts.deny <<EOF
-
- # You may wish to enable this to ensure any programs that don't
- # validate looked up hostnames still leave understandable logs. In past
- # versions of Debian this has been the default.
- # ALL: PARANOID
- EOF
- fi
- fi
- }
-
- case "$1" in
- configure)
- create_hosts_files
- ;;
-
- abort-upgrade|abort-remove|abort-deconfigure)
- ;;
-
- *)
- echo "postinst called with unknown argument '$1'" >&2
- exit 1
- ;;
- esac
-
-
-