CentOS secure
günlük dosyamda aşağıdaki satırlar görünüyor :
Oct 27 21:10:59 servr userdel[7270]: delete user 'nagent'
Oct 27 21:10:59 servr userdel[7270]: removed group 'nagent' owned by 'nagent'
Oct 27 21:11:04 servr useradd[7333]: new group: name=nagent, GID=502
Oct 27 21:11:04 servr useradd[7333]: new user: name=nagent, UID=502, GID=502, home=/home/nagent, shell=/bin/bash
Bunu yapmadım ve bilgime bu sunucuya erişimi olan tek kişi benim.
Bu günlük girişleri ne anlama geliyor? Bunu yapabilecek bir süreç var mı, yoksa sistemime başka biri girmiş mi?
Düzenle 1 - Çalıştırma önerileri:
find / -user nagent -iname "*" -exec ls -l {} \;
-rw-rw----. 1 nagent mail 0 Oct 27 21:11 /var/spool/mail/nagent
find: `/proc/14041/task/14041/fd/5': No such file or directory
find: `/proc/14041/task/14041/fdinfo/5': No such file or directory
find: `/proc/14041/fd/5': No such file or directory
find: `/proc/14041/fdinfo/5': No such file or directory
total 28
drwx------. 2 root root 4096 Oct 27 21:11 CMData
drwx------. 2 root root 4096 Oct 27 21:11 CMSetting
-rw-r--r--. 1 root root 615 Oct 27 21:11 nagent.conf
-rw-r--r--. 1 root root 615 Oct 27 21:11 nagent.conf.Save
-rwxr-xr-x. 1 root root 5510 Oct 27 21:11 nagent_download.sh
-rwxr-xr-x. 1 root root 1665 Oct 27 21:11 uninstall.sh
-rw-r--r--. 1 nagent nagent 18 Sep 22 12:40 /home/nagent/.bash_logout
total 0
-rw-r--r--. 1 nagent nagent 124 Sep 22 12:40 /home/nagent/.bashrc
-rw-r--r--. 1 nagent nagent 176 Sep 22 12:40 /home/nagent/.bash_profile
total 8
drwxr-xr-x. 2 nagent nagent 4096 Aug 18 2010 extensions
drwxr-xr-x. 2 nagent nagent 4096 Aug 18 2010 plugins
total 0
total 0
Bu çıktıyı nasıl yorumlayacağımdan emin değilim ...? Bu SendMail'in bir parçası mı, olabileceğine inanıyorum? Google SendMail "nagent"
, tartışılan sonuçları döndürür SendMail Network Agent
. Bu konuda emin değilim. Ben koşuyorum SendMail SMTP server
.
Edit 2 - /etc/nagent.conf içeriği
[main]
logfilename=/var/log/n-central/nagent.log
loglevel=2
homedir=/home/nagent/
thread_limitation=50
poll_delay=1
datablock_size=20
[soap]
Server=127.0.0.1
Port=80
Protocol=http
ApplianceID=1
Server_ro=no
FYI - port 80 bu sunucuda iptables girişi ile engellenir:
-A INPUT -p tcp -m tcp --dport 80 -j DROP
İçeriği /home/ncm/nable/nagent-rhel5.1_64/nagent_download.sh
:
#!/bin/bash
# Exit on failure --------------------------------------------------------------
function exitOnFailure {
echo "" >> $LOGGER
echo "Download failed" >> $LOGGER
echo "==================================== END DOWNLOAD ================================" >> $LOGGER
exit 1
}
# Show usage -------------------------------------------------------------------
function usage {
echo "" >> $LOGGER
echo "Usage: nagent_download.sh URL InstallerName FileSize MD5Sum Destination [Proxy] [ProxyUsername] [ProxyPassword]" >> $LOGGER
echo "Example: nagent_download.sh http://192.168.20.128/download/100.0.0.0/rhel5.1_64/N-central/nagent-rhel5.1_64.tar.gz nagent-rhel5.1.tar.gz 2785964 aea43c12d2a86d76ea95bbbf0bf625e9 /tmp" >> $LOGGER
exitOnFailure
}
# Verify given arguments -------------------------------------------------------
function verifyArguments {
if [ -z "$URL" ]
then
echo "No download url provided" >> $LOGGER
usage
fi
if [ -z "$INSTALLER" ]
then
echo "No installer name provided" >> $LOGGER
usage
fi
if [ -z "$INSTALLER_FILESIZE" ]
"/home/ncm/nable/nagent-rhel5.1_64/nagent_download.sh" 167L, 5335C
Düzenle 3
netstat -antp | grep 80
tcp 0 0 0.0.0.0:57808 0.0.0.0:* LISTEN 2190/rpc.statd
tcp 0 0 ::ffff:127.0.0.1:8005 :::* LISTEN 2027/java
tcp 0 0 :::8009 :::* LISTEN 2027/java
tcp 0 0 :::80 :::* LISTEN 2027/java
tcp 0 0 ::ffff:127.0.0.1:58580 ::ffff:127.0.0.1:3306 TIME_WAIT -
tcp 0 0 ::ffff:127.0.0.1:58380 ::ffff:127.0.0.1:3306 TIME_WAIT -
tcp 0 0 ::ffff:192.168.1.18:443 ::ffff:70.192.192.180:10757 ESTABLISHED 2027/java
tcp 0 0 ::ffff:127.0.0.1:58280 ::ffff:127.0.0.1:3306 TIME_WAIT -
tcp 0 0 ::ffff:127.0.0.1:58480 ::ffff:127.0.0.1:3306 TIME_WAIT -
Düzenle 4
İçindeki nagent klasörü günlük olaylarıyla home
oluşturuldu secure
. Bunun önemli olup olmadığını bilmiyorum:
drwx------. 6 nagent nagent 4096 Oct 27 21:11 nagent
Ayrıca çalışan süreçleri görüntülemek aşağıdaki ps aux | less
ilgili sonuçlara sahiptir
...
root 7393 0.0 0.0 108432 1176 ? S Oct27 0:00 /bin/sh /etc/init.d/nagent start
root 7396 0.0 0.0 108164 1404 ? S Oct27 0:00 /bin/bash -c ulimit -S -c 0 >/dev/null 2>&1 ; nagent -f /home/nagent/nagent.conf
root 7397 0.0 0.0 219960 7100 ? Sl Oct27 0:15 nagent -f /home/nagent/nagent.conf
...