One of the most important packages to run successfully RHEL6 and SElinux is the setroubleshoot package. It includes useful tools like the setroubleshoot daemon and utils like sealert, sestatus….. So lets see whats the sestatus of my system: [root@rhel1 ~]# sestatus SELinux status: enabled SELinuxfs mount: /selinux Current mode: enforcing Mode from config file: enforcing…
Open /etc/named.conf // // named.conf for Red Hat caching-nameserver // options { directory “/var/named”; dump-file “/var/named/data/cache_dump.db”; statistics-file “/var/named/data/named_stats.txt”; // query-source address * port 53; (only needed when there is a FW between master an slave) allow-transfer {192.168.1.104/24;}; (slaveip) }; // // a caching only nameserver config // controls { inet 127.0.0.1 allow { localhost; }…
Edit the file /etc/openldap/ldap.conf URI ldap://$FQDN_OF_SERVER/ (has to be the same fqdn as in the certificate) BASE dc=mydomain,dc=com TLS_CACERTDIR /etc/openldap/cacerts now edit the /etc/nsswitch.conf file to tell linux where to get the login information from: passwd: files sss ldap shadow: files sss ldap group: files sss ldap After that run the command authconfig-gtk Select: User…
The package caching-nameserver is integrated in the bind package! So these two packages have to be installed: # yum install bind bind-chroot Than set named_write_master_zones 1 # setsebool -P named_write_master_zones 1 Allow queries on port 53 for DNS requests # iptables -A INPUT -m state –state NEW -m tcp -p tcp –dport 53 -j ACCEPT…
Installing KVM on RHEL6 is quite a simple process when having a yum repository. The main package is the kvm package (hypervisor). # yum install kvm To manage the vm’s you’ll need a tool called virt. # yum install virt-manager libvirt libvirt-python python-virtinst libvirt-client xorg-x11-xauth
List all virtual systems: #virsh list Start/Stop virtual os: #virsh start virtosname #virsh shutdown virtosname #virsh destroy virtosname (like a power off) Access a virtual console: # virsh console virtosname Autostart virsh server: # virsh autostart virtosname
umount /crypto fsck.ext4 -C 0 -f /dev/mapper/crypto cryptsetup luksClose crypto lvextend -L +100M /dev/cryptovg/crypto cryptsetup luksOpen /dev/cryptovg/crypto crypto cryptsetup -v resize crypto fsck.ext4 -f /dev/mapper/crypto resize4fs /dev/mapper/crypto (you’ll need to install e4fsprogs to use resize4fs) fsck.ext4 -f /dev/mapper/crypto mount /dev/mapper/crypto /crypto
lvcreate -L 500M -n crypto cryptovg Fill your partition with random data: dd if=/dev/urandom of=/dev/ cryptovg /crypto initialize your partition: cryptsetup –verbose –verify-passphrase luksFormat /dev/ cryptovg / crypto open the newly encrypted device: cryptsetup luksOpen /dev/ cryptovg / crypto cryptosec check it’s there: ls -l /dev/mapper | grep cryptosec create a filesystem: mkfs.ext4 /dev/mapper/cryptosec mount…