Hi,
iptables does not log via syslog-ng. There is nothing in kern.log or
in syslog..
I have the package's defaut syslog-ng.conf (see below)
This is the logging entries for my firewall (monmotha).
Any ideas ?
Thanks
J
#These logging chains are valid to specify in DROP= above
#Set up LDROP
echo -n "Setting up drop chains chains: "
${IPTABLES} -t filter -A LDROP -p tcp -m limit --limit ${LOG_FLOOD} -j
LOG --log-level 6 --log-prefix "TCP Dropped "
${IPTABLES} -t filter -A LDROP -p udp -m limit --limit ${LOG_FLOOD} -j
LOG --log-level 6 --log-prefix "UDP Dropped "
${IPTABLES} -t filter -A LDROP -p icmp -m limit --limit ${LOG_FLOOD}
-j LOG --log-level 6 --log-prefix "ICMP Dropped "
${IPTABLES} -t filter -A LDROP -f -m limit --limit ${LOG_FLOOD} -j LOG
--log-level 4 --log-prefix "FRAGMENT Dropped "
${IPTABLES} -t filter -A LDROP -j DROP
echo -n "LDROP "
#And LREJECT too
${IPTABLES} -t filter -A LREJECT -p tcp -m limit --limit ${LOG_FLOOD}
-j LOG --log-level 6 --log-prefix "TCP Rejected "
${IPTABLES} -t filter -A LREJECT -p udp -m limit --limit ${LOG_FLOOD}
-j LOG --log-level 6 --log-prefix "UDP Rejected "
${IPTABLES} -t filter -A LREJECT -p icmp -m limit --limit ${LOG_FLOOD}
-j LOG --log-level 6 --log-prefix "ICMP Rejected "
${IPTABLES} -t filter -A LREJECT -f -m limit --limit ${LOG_FLOOD} -j
LOG --log-level 4 --log-prefix "FRAGMENT Rejected "
${IPTABLES} -t filter -A LREJECT -j REJECT
echo -n "LREJECT "
#Don't forget TREJECT
${IPTABLES} -t filter -A TREJECT -p tcp -j REJECT --reject-with tcp-reset
${IPTABLES} -t filter -A TREJECT -p udp -j REJECT --reject-with
icmp-port-unreachable
${IPTABLES} -t filter -A TREJECT -p icmp -j DROP
${IPTABLES} -t filter -A TREJECT -j REJECT
echo -n "TREJECT "
#And LTREJECT
${IPTABLES} -t filter -A LTREJECT -p tcp -m limit --limit ${LOG_FLOOD}
-j LOG --log-level 6 --log-prefix "TCP Rejected "
${IPTABLES} -t filter -A LTREJECT -p udp -m limit --limit ${LOG_FLOOD}
-j LOG --log-level 6 --log-prefix "UDP Rejected "
${IPTABLES} -t filter -A LTREJECT -p icmp -m limit --limit
${LOG_FLOOD} -j LOG --log-level 6 --log-prefix "ICMP Rejected
"
${IPTABLES} -t filter -A LTREJECT -f -m limit --limit ${LOG_FLOOD} -j
LOG --log-level 4 --log-prefix "FRAGMENT Rejected "
${IPTABLES} -t filter -A LTREJECT -j TREJECT
echo -n "LTREJECT "
#And ULOG stuff, same as above but ULOG instead of LOG
if [ ${HAVE_ULOG} = "true" ] || [ ${HAVE_ULOG} = "" ] ; then
${IPTABLES} -t filter -A ULDROP -p tcp -m limit --limit
${LOG_FLOOD} -j ULOG --ulog-nlgroup 1 --ulog-prefix LDROP
_TCP
${IPTABLES} -t filter -A ULDROP -p udp -m limit --limit
${LOG_FLOOD} -j ULOG --ulog-nlgroup 1 --ulog-prefix LDROP
_UDP
${IPTABLES} -t filter -A ULDROP -p icmp -m limit --limit
${LOG_FLOOD} -j ULOG --ulog-nlgroup 1 --ulog-prefix LDRO
P_ICMP
${IPTABLES} -t filter -A ULDROP -f -m limit --limit
${LOG_FLOOD} -j ULOG --ulog-nlgroup 1 --ulog-prefix LDROP_FRA
G
${IPTABLES} -t filter -A ULDROP -j DROP
echo -n "ULDROP "
#
# Configuration file for syslog-ng under Debian
#
# attempts at reproducing default syslog behavior
# the standard syslog levels are (in descending order of priority):
# emerg alert crit err warning notice info debug
# the aliases "error", "panic", and "warn" are deprecated
# the "none" priority found in the original syslogd configuration is
# only used in internal messages created by syslogd
######
# options
options {
# disable the chained hostname format in logs
# (default is enabled)
chain_hostnames(0);
# the time to wait before a died connection is re-established
# (default is 60)
time_reopen(10);
# the time to wait before an idle destination file is closed
# (default is 60)
time_reap(360);
# the number of lines buffered before written to file
# you might want to increase this if your disk isn't catching with
# all the log messages you get or if you want less disk activity
# (say on a laptop)
# (default is 0)
#sync(0);
# the number of lines fitting in the output queue
log_fifo_size(2048);
# enable or disable directory creation for destination files
create_dirs(yes);
# default owner, group, and permissions for log files
# (defaults are 0, 0, 0600)
#owner(root);
group(adm);
perm(0640);
# default owner, group, and permissions for created directories
# (defaults are 0, 0, 0700)
#dir_owner(root);
#dir_group(root);
dir_perm(0755);
# enable or disable DNS usage
# syslog-ng blocks on DNS queries, so enabling DNS may lead to
# a Denial of Service attack
# (default is yes)
use_dns(no);
# maximum length of message in bytes
# this is only limited by the program listening on the /dev/log Unix
# socket, glibc can handle arbitrary length log messages, but -- for
# example -- syslogd accepts only 1024 bytes
# (default is 2048)
#log_msg_size(2048);
};
######
# sources
# all known message sources
source s_all {
# message generated by Syslog-NG
internal();
# standard Linux log source (this is the default place for the
syslog()
# function to send logs to)
unix-stream("/dev/log");
# messages from the kernel
file("/proc/kmsg" log_prefix("kernel: "));
# use the above line if you want to receive remote UDP logging
messages
# (this is equivalent to the "-r" syslogd flag)
# udp();
};
######
# destinations
# some standard log files
destination df_auth { file("/var/log/auth.log"); };
destination df_syslog { file("/var/log/syslog"); };
destination df_cron { file("/var/log/cron.log"); };
destination df_daemon { file("/var/log/daemon.log"); };
destination df_kern { file("/var/log/kern.log"); };
destination df_lpr { file("/var/log/lpr.log"); };
destination df_mail { file("/var/log/mail.log"); };
destination df_user { file("/var/log/user.log"); };
destination df_uucp { file("/var/log/uucp.log"); };
# these files are meant for the mail system log files
# and provide re-usable destinations for {mail,cron,...}.info,
# {mail,cron,...}.notice, etc.
destination df_facility_dot_info { file("/var/log/$FACILITY.info"); };
destination df_facility_dot_notice { file("/var/log/$FACILITY.notice"); };
destination df_facility_dot_warn { file("/var/log/$FACILITY.warn"); };
destination df_facility_dot_err { file("/var/log/$FACILITY.err"); };
destination df_facility_dot_crit { file("/var/log/$FACILITY.crit"); };
# these files are meant for the news system, and are kept separated
# because they should be owned by "news" instead of "root"
destination df_news_dot_notice { file("/var/log/news/news.notice"
owner("news")); };
destination df_news_dot_err { file("/var/log/news/news.err" owner("news"));
};
destination df_news_dot_crit { file("/var/log/news/news.crit" owner("news"));
};
# some more classical and useful files found in standard syslog
configurations
destination df_debug { file("/var/log/debug"); };
destination df_messages { file("/var/log/messages"); };
# pipes
# a console to view log messages under X
destination dp_xconsole { pipe("/dev/xconsole"); };
# consoles
# this will send messages to everyone logged in
destination du_all { usertty("*"); };
######
# filters
# all messages from the auth and authpriv facilities
filter f_auth { facility(auth, authpriv); };
# all messages except from the auth and authpriv facilities
filter f_syslog { not facility(auth, authpriv); };
# respectively: messages from the cron, daemon, kern, lpr, mail, news, user,
# and uucp facilities
filter f_cron { facility(cron); };
filter f_daemon { facility(daemon); };
filter f_kern { facility(kern); };
filter f_lpr { facility(lpr); };
filter f_mail { facility(mail); };
filter f_news { facility(news); };
filter f_user { facility(user); };
filter f_uucp { facility(uucp); };
# some filters to select messages of priority greater or equal to info, warn,
# and err
# (equivalents of syslogd's *.info, *.warn, and *.err)
filter f_at_least_info { level(info..emerg); };
filter f_at_least_notice { level(notice..emerg); };
filter f_at_least_warn { level(warn..emerg); };
filter f_at_least_err { level(err..emerg); };
filter f_at_least_crit { level(crit..emerg); };
# all messages of priority debug not coming from the auth, authpriv, news,
and
# mail facilities
filter f_debug { level(debug) and not facility(auth, authpriv, news, mail);
};
# all messages of info, notice, or warn priority not coming form the auth,
# authpriv, cron, daemon, mail, and news facilities
filter f_messages {
level(info,notice,warn)
and not facility(auth,authpriv,cron,daemon,mail,news);
};
# messages with priority emerg
filter f_emerg { level(emerg); };
# complex filter for messages usually sent to the xconsole
filter f_xconsole {
facility(daemon,mail)
or level(debug,info,notice,warn)
or (facility(news)
and level(crit,err,notice));
};
######
# logs
# order matters if you use "flags(final);" to mark the end of processing in a
# "log" statement
# these rules provide the same behavior as the commented original syslogd
rules
# auth,authpriv.* /var/log/auth.log
log {
source(s_all);
filter(f_auth);
destination(df_auth);
};
# *.*;auth,authpriv.none -/var/log/syslog
log {
source(s_all);
filter(f_syslog);
destination(df_syslog);
};
# this is commented out in the default syslog.conf
# cron.* /var/log/cron.log
#log {
# source(s_all);
# filter(f_cron);
# destination(df_cron);
#};
# daemon.* -/var/log/daemon.log
log {
source(s_all);
filter(f_daemon);
destination(df_daemon);
};
# kern.* -/var/log/kern.log
log {
source(s_all);
filter(f_kern);
destination(df_kern);
};
# lpr.* -/var/log/lpr.log
log {
source(s_all);
filter(f_lpr);
destination(df_lpr);
};
# mail.* -/var/log/mail.log
log {
source(s_all);
filter(f_mail);
destination(df_mail);
};
# user.* -/var/log/user.log
log {
source(s_all);
filter(f_user);
destination(df_user);
};
# uucp.* /var/log/uucp.log
log {
source(s_all);
filter(f_uucp);
destination(df_uucp);
};
# mail.info -/var/log/mail.info
log {
source(s_all);
filter(f_mail);
filter(f_at_least_info);
destination(df_facility_dot_info);
};
# mail.warn -/var/log/mail.warn
log {
source(s_all);
filter(f_mail);
filter(f_at_least_warn);
destination(df_facility_dot_warn);
};
# mail.err /var/log/mail.err
log {
source(s_all);
filter(f_mail);
filter(f_at_least_err);
destination(df_facility_dot_err);
};
# news.crit /var/log/news/news.crit
log {
source(s_all);
filter(f_news);
filter(f_at_least_crit);
destination(df_news_dot_crit);
};
# news.err /var/log/news/news.err
log {
source(s_all);
filter(f_news);
filter(f_at_least_err);
destination(df_news_dot_err);
};
# news.notice /var/log/news/news.notice
log {
source(s_all);
filter(f_news);
filter(f_at_least_notice);
destination(df_news_dot_notice);
};
# *.=debug;\
# auth,authpriv.none;\
# news.none;mail.none -/var/log/debug
log {
source(s_all);
filter(f_debug);
destination(df_debug);
};
# *.=info;*.=notice;*.=warn;\
# auth,authpriv.none;\
# cron,daemon.none;\
# mail,news.none -/var/log/messages
log {
source(s_all);
filter(f_messages);
destination(df_messages);
};
# *.emerg *
log {
source(s_all);
filter(f_emerg);
destination(du_all);
};
# daemon.*;mail.*;\
# news.crit;news.err;news.notice;\
# *.=debug;*.=info;\
# *.=notice;*.=warn |/dev/xconsole
log {
source(s_all);
filter(f_xconsole);
destination(dp_xconsole);
};
--
Justin F. Knotzke
jknotzke@shampoo.ca
http://www.shampoo.ca
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