| SHIELD.CONF(5) | File Formats Manual | SHIELD.CONF(5) |
shield.conf - pam_shield configuration file
/etc/security/shield.conf is the configuration file for PAM module pam_shield, which locks out remote attackers trying password guessing.
debug [on|off]
Log (or do not log) debugging information via syslog(3).
block [all-users|unknown-users]
Block all users, or only unknown users. Whether users are "known" is
determined from getpwnam(3)
allow_missing_dns [yes|no]
If no, reject any connection that comes from a numerical IP address with no
DNS name (as returned by pam_get_item(3) with item_type set to
PAM_RHOST).
allow_missing_reverse [yes|no]
If no, reject any connection that comes from a host with no reverse DNS
entry.
allow hostname
Host or network to whitelist. These hosts are passed through with no checks or
logging. Multiple allow lines are permitted. hostname may be
IP address, hostname, network/netmask, or network in CIDR format.
db filename
Database file where login attempts are stored.
trigger_cmd command
Command to run to block/unblock a host. See shield-trigger(8) and
shield-trigger-iptables(8) for two examples.
max_conns n
Host will be blocked if more than n connection attempts from one host
in interval time.
interval n
Host blocked if more than max_conns attempts in n seconds.
Instead of seconds, suffix may be used: s for seconds, m minutes, h hours, d
days, w weeks, M months (30 days), y years.
retention n
Record of connection attempts retained for n seconds. Suffixes may be
used as in interval. Each host is checked for expiration when it
attempts to connect, and the entire database is checked whenever
shield-purge(8) is run (by default, once a day).
/etc/security/shield.conf Configuration file for pam-shield
shield-purge(8), shield-trigger(8), shield-trigger-iptables(8)
pam-shield was written by and copyright 2007 Walter de Jong <walter@heiho.net>. This manpage copyright 2010-2012 Jonathan Niehof <jtniehof@gmail.com>.
| 11 May 2012 | pam_shield 0.9.6 |