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Suse now support each previous service pack for six month since the next service pack was release. So For SLES 11, support of SP1 lasted for six month after SP2 was released (February 2012) and now it over. Actually SP2 was the first service pack released after Suse development was moved back to Germany and it was quite problematic at the beginning.
In any case after six month you need to upgrade to preserve support.
# Same thing without a password %wheel ALL=(ALL) NOPASSWD: ALL
you need to comment out two lines:
Defaults targetpw # ask for the password of the target user i.e.
root ALL ALL=(ALL) ALL # WARNING! Only use this together with 'Defaults targetpw'!
in /etc/sudoers file.
SUSE Linux Enterprise Desktop 11 comes with an improved update stack and the command line tool zypper to manage the install/update packages and repositories.
This release of SUSE Linux Enterprise Desktop ships with AppArmor. The AppArmor intrusion prevention framework builds a firewall around your applications by limiting the access to files, directories, and POSIX capabilities to the minimum required for normal operation. AppArmor protection can be enabled via the AppArmor control panel, located in YaST under Security and Users. For detailed information about using AppArmor, see the documentation in
The AppArmor profiles included with SUSE Linux have been developed with our best efforts to reproduce how most users use their software. The profiles provided work unmodified for many users, but some users find our profiles too restrictive for their environments.
If you discover that some of your applications do not function as you expected, you may need to use the AppArmor Update Profile Wizard in YaST (or use the aa-logprof(8) command line utility) to update your AppArmor profiles. Place all your profiles into learning mode with the following: aa-complain /etc/apparmor.d/*
When a program generates a high number of complaints, the system's performance is degraded. To mitigate this, we recommend periodically running the Update Profile Wizard (or aa-logprof(8)) to update your profiles, even if you choose to leave them in learning mode. This reduces the number of learning events logged to disk, which improves the performance of the system.
Fine-Tuning Firewall Settings
SuSEfirewall2 is enabled by default. That means that by default you cannot log in from remote systems. It also interferes with network browsing and multicast applications, such as SLP and Samba ("Network Neighborhood"). You can fine-tune the firewall settings using YaST.
Read-Only Root Filesystem
It is possible to run SUSE Linux Enterprise Desktop 11 on a read-only root filesystem. Due to the huge number of possible configurations, this is currently not a supported scenario.
The /tmp and
/vardirectories need to be on a separate partition and cannot be mounted read-only.
After the installation has finished and all services are configured, login as root and do the following modifications:
/etc/fstaband add "ro" to the mount options of the root filesystem entry.rm /etc/mtab ln -s /proc/mounts /etc/mtab mkdir /var/lib/hwclock mv /etc/adjtime /var/lib/hwclock ln -s /var/lib/hwclock/adjtime /etc/adjtime # the following two steps are only necessary if you use dhcp: mv /etc/resolv.conf /var/lib/misc/ ln -s /var/lib/misc/resolv.conf /etc/resolv.conf # Now mount root filesystem read-only and reboot mount -o remount,ro / rebootAdded System Security Services Daemon (sssd) for LDAP/Kerberos Authentication =The System Security Services Daemon (sssd) was added to SLE 11 SP2 to provide an alternative method to retrieve user and group information from LDAP directories and to perform authentication through LDAP or Kerberos. It is provided as an alternative to the nss_ldap and pam_ldap (or pam_krb5) Modules. Compared to those modules sssd offers some advantages:
- due to it's daemon based architecture possible symbol conflicts between different implementations of LDAP client libraries can be avoided
- offline authentication is supported (disabled by default)
- builtin support for Kerberos Authentication (no separate PAM module needed)
With SLE 11 SP2 the YaST2 ldap-client module can be used to setup sssd for LDAP (and/or Kerberos) Authentication. The YaST to ldap-client module can also be used to switch from a nss_ldap/pam_ldap based setup to sssd and back. Some additional notes:
- sssd requires a Transport Layer Encryption to be in place when using LDAP based authentication (e.g., LDAPS or StartTLS),
- sssd does currently only support the passwd, shadow and group NSS databases
A public statement can be found at http://www.suse.com/products/server/technical-information/#FileSystem.
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Last modified: March 12, 2019