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Rozmiar: 5984
Komentarz: + gnugrep
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Rozmiar: 8845
Komentarz: * aktualizacja; zmiana parserów na highlight
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| Usunięcia zostały oznaczone w ten sposób. | Dodatki zostały oznaczone w ten sposób. |
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<<TableOfContents()>> <<BR>> = Zaintaowanie logcheck = Z wykorzystaniem właśnego [[PoudriereBinaryPkg|repozytorium pakietów]] należy zainstalować w systemie: {{{#!highlight bash numbers=off pkg install -y security/logcheck textproc/gnugrep }}} |
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| {{{#!shell numbers=off | {{{#!highlight bash numbers=off |
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| === violations.d === | Wszystkie poniższe poprawki są umieszczone w [[UniMaster|repozytorium konfiguracji]]. |
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| {{{#!bsdmake numbers=off --- kernel.orig 2014-12-08 12:24:33.312207000 +0100 +++ kernel 2014-12-09 11:12:54.385550315 +0100 |
=== violations.d/kernel === {{{#!highlight diff numbers=off --- /usr/local/etc/logcheck/violations.d/kernel 2015-06-30 01:57:35.000000000 +0200 +++ /usr/local/etc/logcheck/violations.d/kernel.new 2015-07-07 05:23:31.130598196 +0200 |
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| === ignore.d.server === {{{#!bsdmake numbers=off |
=== ignore.d.server/cyrus === {{{#!highlight diff numbers=off |
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| == gnugrep == Dla systemów FreeBSD, w których jest bsdgrep (jako domyślny w base system), to konieczność jest modyfikacji '''logcheck''' aby korzystał z gnugrep (są jakieś drobne różnice): {{{#!shell numbers=off portupgrade -N gnugrep |
=== ignore.d.server/kernel === {{{#!highlight diff numbers=off --- /usr/local/etc/logcheck/ignore.d.server/kernel 2015-07-10 15:04:00.081964266 +0200 +++ /usr/local/etc/logcheck/ignore.d.server/kernel.new 2015-07-10 15:03:53.648964998 +0200 @@ -79,3 +79,4 @@ ^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ kernel: imklog [.[:digit:]]+, log source = /proc/kmsg started\.$ ^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ kernel: Kernel logging \(proc\) stopped\.$ ^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ kernel:( \[ *[[:digit:]]+\.[[:digit:]]+\])? kvm: emulating exchange as write$ +^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ kernel:( \[ *[[:digit:]]+\.[[:digit:]]+\])? .*NetScreen device_id= |
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| Oraz zapatchowanie samej binarki: | === ignore.d.server/stunnel === {{{#!highlight diff numbers=off --- /usr/local/etc/logcheck/ignore.d.server/stunnel.orig 2015-06-30 01:57:35.000000000 +0200 +++ /usr/local/etc/logcheck/ignore.d.server/stunnel 2015-07-07 02:17:53.273364642 +0200 @@ -5,3 +5,4 @@ ^\w{3} [ :0-9]{11} [._[:alnum:]-]+ stunnel(\[[0-9]+\])?: stunnel [0-9.]+ on i386-pc-linux-gnu PTHREAD\+POLL\+IPv6\+LIBWRAP with OpenSSL [0-9a-z.]+ [0-9]{2} \w{3} [0-9]{4}$ ^\w{3} [ :0-9]{11} [._[:alnum:]-]+ stunnel(\[[0-9]+\])?: [0-9]+ clients allowed$ ^\w{3} [ :0-9]{11} [._[:alnum:]-]+ stunnel(\[[0-9]+\])?: SSL_accept: Peer suddenly disconnected$ +^\w{3} [ :0-9]{11} [._[:alnum:]-]+ stunnel(\[[0-9]+\])?: LOG[35] }}} |
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| {{{#!bsdmake numbers=off --- /usr/local/sbin/logcheck.orig 2014-12-08 12:24:33.282207000 +0100 +++ /usr/local/sbin/logcheck 2014-12-09 11:21:14.922515719 +0100 |
== Poprawki dla logcheck z wykorzystaniem gnugrep == System [[https://www.FreeBSD.org|FreeBSD|target="_blank"]] posiada własną wersję grep (tzw. ''bsdgrep'') niekopatybilne z [[FreshPorts:textproc/gnugrep|gnugrep]]. Dlatego też należy poprawić skrypt `/usr/local/sbin/logcheck`: {{{#!highlight diff numbers=off --- /usr/local/sbin/logcheck 2015-06-02 21:58:07.000000000 +0200 +++ /usr/local/sbin/logcheck.new 2015-06-10 21:37:54.000798776 +0200 |
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| + /usr/local/sbin/egrep --text -v '^[[:space:]]*$|^#' "$dir/$rulefile" | cat \ | + /usr/local/bin/egrep --text -v '^[[:space:]]*$|^#' "$dir/$rulefile" | cat \ |
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| + /usr/local/sbin/egrep -v "^Summarizing " | cat >> "$TMPDIR/report" \ | + /usr/local/bin/egrep -v "^Summarizing " | cat >> "$TMPDIR/report" \ |
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| + /usr/local/sbin/egrep --text -f "$raise/$grepfile" "$TMPDIR/logoutput-sorted" | cat \ | + /usr/local/bin/egrep --text -f "$raise/$grepfile" "$TMPDIR/logoutput-sorted" | cat \ |
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| @@ -386,7 +386,7 @@ | @@ -380,13 +380,13 @@ return $RETURN } -# Process a logfile snippet with egrep. +# Process a logfile snippet with /usr/local/bin/egrep. cleanchecked() { clean="$1" |
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| + /usr/local/sbin/egrep --text -v -f "$clean" "$TMPDIR/checked" | cat >> "$TMPDIR/checked.1" \ | + /usr/local/bin/egrep --text -v -f "$clean" "$TMPDIR/checked" | cat >> "$TMPDIR/checked.1" \ |
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| + /usr/local/sbin/egrep --text -v -f "$clean/$file" "$TMPDIR/checked" | cat \ | + /usr/local/bin/egrep --text -v -f "$clean/$file" "$TMPDIR/checked" | cat \ |
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| + for file in $(/usr/local/sbin/egrep --text -v "(^#|^[[:space:]]*$)" "$LOGFILES_LIST"); do | + for file in $(/usr/local/bin/egrep --text -v "(^#|^[[:space:]]*$)" "$LOGFILES_LIST"); do |
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| = Sprawdzenie poprawności działania = Po wykonaniu całości konfiguracji jest możliwość sprawdzenia poprawności konfiguracji: {{{#!highlight bash numbers=off su -l logcheck -c "logcheck -dot" }}} = Dodanie zadań w crontab = Z wykorzystaniem własnego [[UniMaster|repozytorium konfiguracji]] należy zainstalować zadań `crond` dla użytkownika `logcheck`: {{{#!highlight bash numbers=off # --- definicje zmiennych lokalnych --------------------------------------- # PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin MAILTO=root # --- uruchamianie zada/n ------------------------------------------------- # @reboot if [ -x /usr/local/sbin/logcheck ]; then nice -n10 /usr/local/sbin/logcheck -R; fi 2 07,14,20 * * * if [ -x /usr/local/sbin/logcheck ]; then nice -n10 /usr/local/sbin/logcheck; fi }}} |
|
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| {i} Wszelkie uwagi proszę kierować do administratora wiki. | {i} ` `<<GetVal(SlownikNewBsd,adm-podpis)>> |
Spis Treści
Zaintaowanie logcheck
Z wykorzystaniem właśnego repozytorium pakietów należy zainstalować w systemie:
pkg install -y security/logcheck textproc/gnugrep
Konfiguracja logcheck
Uprawnienia do plików
Po zainstalowaniu logcheck (od wersji logcheck-1.2.69_1) trzeba nieco "poprawić" uprawnienia w systemie plików, aby logcheck działał poprawnie:
# dla partycji UFS
#
setfacl -m u:logcheck:rwx /var/log
setfacl -m g:logcheck:r /var/log/security /var/log/auth.log
# dla partycji ZFS
#
setfacl -m u:logcheck:rwx::allow /var/log
setfacl -m g:logcheck:r::allow /var/log/security /var/log/auth.log
chgrp -R logcheck /var/log/sudo/
chown -R logcheck /usr/local/share/logcheck/detectrotate/
Patchowanie wybranych plików
Wszystkie poniższe poprawki są umieszczone w repozytorium konfiguracji.
violations.d/kernel
--- /usr/local/etc/logcheck/violations.d/kernel 2015-06-30 01:57:35.000000000 +0200
+++ /usr/local/etc/logcheck/violations.d/kernel.new 2015-07-07 05:23:31.130598196 +0200
@@ -1,2 +1,2 @@
-^\w{3} [ :0-9]{11} [._[:alnum:]-]+ kernel:( \[ *[[:digit:]]+\.[[:digit:]]+\])? [[:alnum:]]+: media error \(bad sector\): status=0x[[:xdigit:]]+ { DriveReady SeekComplete Error }$
+^\w{3} [ :0-9]{11} [._[:alnum:]-]+ kernel:( \[ *[[:digit:]]+\.[[:digit:]]+\])? [[:alnum:]]+: media error \(bad sector\): status=0x[[:xdigit:]]+ \{ DriveReady SeekComplete Error \}$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ kernel:( \[ *[[:digit:]]+\.[[:digit:]]+\])? end_request: I/O error, dev [[:alnum:]]+, sector [[:digit:]]+
ignore.d.server/cyrus
--- cyrus.orig 2014-03-18 00:18:27.000000000 +0100
+++ cyrus 2014-07-30 00:47:50.000000000 +0200
@@ -4,3 +4,12 @@
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ cyrus/lmtpd\[[0-9]+\]: DBERROR db3: [12] lockers$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ cyrus/notifyd\[[0-9]+\]: MAIL, , [^[:space:]]+, [^[:space:]]+, \"[ [:alnum:][:punct:]]+\"$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ cyrus/squatter\[[0-9]+\]: (skipping|indexing) mailbox [[:alpha:]^\.]+\.\.\.$
+^\w{3} [ :0-9]{11} [._[:alnum:]-]+ ctl_cyrusdb\[[0-9]+\]: (done )?checkpointing cyrus databases
+^\w{3} [ :0-9]{11} [._[:alnum:]-]+ pop3s?\[[0-9]+\]: counts: retr
+^\w{3} [ :0-9]{11} [._[:alnum:]-]+ pop3s?\[[0-9]+\]: starttls: TLSv1 with cipher
+^\w{3} [ :0-9]{11} [._[:alnum:]-]+ pop3s?\[[0-9]+\]: imapd:Loading hard-coded DH parameters
+^\w{3} [ :0-9]{11} [._[:alnum:]-]+ (pop3s?|lmtpunix|imap)\[[0-9]+\]: USAGE [^[:space:]]+ user:
+^\w{3} [ :0-9]{11} [._[:alnum:]-]+ pop3s?\[[0-9]+\]: Expunged [0-9]+ messages from user
+^\w{3} [ :0-9]{11} [._[:alnum:]-]+ (pop3s?|imap)\[[0-9]+\]: .* User logged in SESSIONID=
+^\w{3} [ :0-9]{11} [._[:alnum:]-]+ sieve\[[0-9]+\]: .* User logged in
+^\w{3} [ :0-9]{11} [._[:alnum:]-]+ (pop3s?|imap)\[[0-9]+\]: .* starttls:
ignore.d.server/kernel
--- /usr/local/etc/logcheck/ignore.d.server/kernel 2015-07-10 15:04:00.081964266 +0200
+++ /usr/local/etc/logcheck/ignore.d.server/kernel.new 2015-07-10 15:03:53.648964998 +0200
@@ -79,3 +79,4 @@
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ kernel: imklog [.[:digit:]]+, log source = /proc/kmsg started\.$
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ kernel: Kernel logging \(proc\) stopped\.$
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ kernel:( \[ *[[:digit:]]+\.[[:digit:]]+\])? kvm: emulating exchange as write$
+^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ kernel:( \[ *[[:digit:]]+\.[[:digit:]]+\])? .*NetScreen device_id=
ignore.d.server/stunnel
--- /usr/local/etc/logcheck/ignore.d.server/stunnel.orig 2015-06-30 01:57:35.000000000 +0200
+++ /usr/local/etc/logcheck/ignore.d.server/stunnel 2015-07-07 02:17:53.273364642 +0200
@@ -5,3 +5,4 @@
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ stunnel(\[[0-9]+\])?: stunnel [0-9.]+ on i386-pc-linux-gnu PTHREAD\+POLL\+IPv6\+LIBWRAP with OpenSSL [0-9a-z.]+ [0-9]{2} \w{3} [0-9]{4}$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ stunnel(\[[0-9]+\])?: [0-9]+ clients allowed$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ stunnel(\[[0-9]+\])?: SSL_accept: Peer suddenly disconnected$
+^\w{3} [ :0-9]{11} [._[:alnum:]-]+ stunnel(\[[0-9]+\])?: LOG[35]
Poprawki dla logcheck z wykorzystaniem gnugrep
System FreeBSD posiada własną wersję grep (tzw. bsdgrep) niekopatybilne z gnugrep. Dlatego też należy poprawić skrypt /usr/local/sbin/logcheck:
--- /usr/local/sbin/logcheck 2015-06-02 21:58:07.000000000 +0200
+++ /usr/local/sbin/logcheck.new 2015-06-10 21:37:54.000798776 +0200
@@ -204,7 +204,7 @@
debug "cleanrules: ${dir}/${rulefile}"
if [ -r "${dir}/${rulefile}" ]; then
# pipe to cat on greps to get usable exit status
- egrep --text -v '^[[:space:]]*$|^#' "$dir/$rulefile" | cat \
+ /usr/local/bin/egrep --text -v '^[[:space:]]*$|^#' "$dir/$rulefile" | cat \
>> "$cleaned/$rulefile" \
|| error "Couldn't append to $cleaned/$rulefile."
else
@@ -227,7 +227,7 @@
if [ "$SYSLOGSUMMARY" -eq 1 ] && [ -x "$SYSLOG_SUMMARY" ]; then
debug "report: running syslog-summary - $*"
$SYSLOG_SUMMARY "$TMPDIR/checked" | \
- egrep -v "^Summarizing " | cat >> "$TMPDIR/report" \
+ /usr/local/bin/egrep -v "^Summarizing " | cat >> "$TMPDIR/report" \
|| error "Could not append to report."
else
if [ "$SYSLOGSUMMARY" -eq 1 ] && [ ! -x "$SYSLOG_SUMMARY" ]; then
@@ -309,7 +309,7 @@
debug "greplogoutput: $grepfile"
# Raise entries that match
- egrep --text -f "$raise/$grepfile" "$TMPDIR/logoutput-sorted" | cat \
+ /usr/local/bin/egrep --text -f "$raise/$grepfile" "$TMPDIR/logoutput-sorted" | cat \
> "$TMPDIR/checked" \
|| error "Could not output to $TMPDIR/checked."
@@ -380,13 +380,13 @@
return $RETURN
}
-# Process a logfile snippet with egrep.
+# Process a logfile snippet with /usr/local/bin/egrep.
cleanchecked() {
clean="$1"
if [ -f "$clean" ]; then
debug "cleanchecked - file: $clean"
- egrep --text -v -f "$clean" "$TMPDIR/checked" | cat >> "$TMPDIR/checked.1" \
+ /usr/local/bin/egrep --text -v -f "$clean" "$TMPDIR/checked" | cat >> "$TMPDIR/checked.1" \
|| error "Could not output to $TMPDIR/checked.1."
mv "$TMPDIR/checked.1" "$TMPDIR/checked" \
|| error "Could not move $TMPDIR/checked.1 to $TMPDIR/checked"
@@ -394,7 +394,7 @@
debug "cleanchecked - dir - $clean"
for file in $(ls -1 "$clean/"); do
debug "cleanchecked - dir - $clean/$file"
- egrep --text -v -f "$clean/$file" "$TMPDIR/checked" | cat \
+ /usr/local/bin/egrep --text -v -f "$clean/$file" "$TMPDIR/checked" | cat \
>> "$TMPDIR/checked.1" \
|| error "Could not output to TMPDIR/checked.1."
mv "$TMPDIR/checked.1" "$TMPDIR/checked" \
@@ -641,7 +641,7 @@
|| error "Could not mkdir for log files"
if [ ! "$LOGFILE" ] && [ -r "$LOGFILES_LIST" ]; then
SAVEIFS=$IFS; IFS=$(echo -en "\n\b");
- for file in $(egrep --text -v "(^#|^[[:space:]]*$)" "$LOGFILES_LIST"); do
+ for file in $(/usr/local/bin/egrep --text -v "(^#|^[[:space:]]*$)" "$LOGFILES_LIST"); do
logoutput "$file"
done
IFS=$SAVEIFS
Sprawdzenie poprawności działania
Po wykonaniu całości konfiguracji jest możliwość sprawdzenia poprawności konfiguracji:
su -l logcheck -c "logcheck -dot"
Dodanie zadań w crontab
Z wykorzystaniem własnego repozytorium konfiguracji należy zainstalować zadań crond dla użytkownika logcheck:
# --- definicje zmiennych lokalnych ---------------------------------------
#
PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin
MAILTO=root
# --- uruchamianie zada/n -------------------------------------------------
#
@reboot if [ -x /usr/local/sbin/logcheck ]; then nice -n10 /usr/local/sbin/logcheck -R; fi
2 07,14,20 * * * if [ -x /usr/local/sbin/logcheck ]; then nice -n10 /usr/local/sbin/logcheck; fi
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