Collax Business Server

Release Notes Version 4.1.18

Release date: 09/25/2008

Overview

Update Instructions

To install this update please follow these steps:

Procedure


Contents

Installation Notes

New in this Release

Problems Fixed in this Release

Notes

Restrictions

Known Issues


Installation 4.1.18

Upgrade from Release 1.X

Please note the hardware requirements if you want to do an upgrade to version 4.1.x.

If your Collax Business Server version is below 2.0.0 please make sure that you do a backup of the intermediate Version 1.18b. To upgrade to the current version a further intermediate step to version 2.5.2, 3.0.6 and 3.0.26 will be accomplished.

Upgrade from Release Version less than 3.0.26

To accomplish the upgrade to version 4.1.x the prior version 3.0.26 needs to be installed. To install the version 3.0.26 please follow the steps "Get Package List", "Get Packages" and "Install".

Please follow the steps "Accomplish Upgrade to Version 4.1.x" if the version CBS 3.0.26 is installed. Please read the release notes to the appropriate version.


New in Release 4.1.18

GUI: Delete files of no more existing config-objects

To avoid data loss user- or configbased data in the Collax System will not be removed.

In the dialog "Clean-Up" in the menu System->System Operation->Toolbox it is possible to remove the data which is no more used by any user or configfile.

VPN: IPSec Transport-Mode

The transport mode of IPSec is used to establish encrypted tunnels between two IPSec endpoints in contrary to the tunnel mode where two networks are connected via an encryted tunnel.

This new mode can be chosen when adding or editing a link. With it fallback links via IPSec are realized.

Hardware: Realtek Gigabit Update

With this update a new driver for Realtek Gigabit for RTL8169s/8110s chipset will be installed.

Misc: Select interfaces for the passive network monitoring

In the passive network monitoring with Arpwatch you can either choose to monitor all ethernet links or only the selected links.

Misc: Improved DynDNS

Dynamic DNS is used to resolve hosts with dynamic ip addresses via a fixed name.

This update introduces the possibiliy to use several DynDNS providers at the same time. Additionally the link which ip address is used for the update of the DNS is selectable. The traditional method to determine the ip address automatically can still be used.

Misc: Features for user import

With this update it is possible to force to overwrite the passwords of already existing users with the csv file and to select the groups an imported user should be a member of.


Problems Fixed in Release 4.1.18

Security: GnuTLS Library

In the source code of the GnuTLS library security holes have been discovered. These holes will be closed within this Collax software update.

Assigned Common Vulnerabilities and Exposures (CVE) numbers:

CVE-2008-1948 CVE-2008-1949 CVE-2008-1950 CVE-2008-2377

Security: Java

In the source code of Java JDK security holes have been discovered. These holes will be closed within this Collax software update to Java 1.6.0 update 7.

Further information to the Sun Java Update can be found here .

Security: Linux-Kernel

In the source code of the Linux Kernel security holes have been discovered. These holes will be closed within this software update to kernel version 2.6.16.62.

Assigned Common Vulnerabilities and Exposures (CVE) numbers:

CVE-2008-1669

Security: Web Server Apache

In the source code of Apache webserver security holes have been discovered. These holes will be closed within this Collax software update.

Apache 2.2.9 will be installed. Assigned Common Vulnerabilities and Exposures (CVE) numbers:

CVE-2007-5000 CVE-2007-6388 CVE-2007-6421 CVE-2007-6422 CVE-2007-6423 CVE-2008-0455 CVE-2008-0456

VPN: No buffer space available

With this update a patch is going to be installed for kernel 2.6.16. This patch corrects disruptions within live VPN links. The refering error message was "Errno 105: No buffer space available" .

Fax: Status Email if receiving facsimiles

If sending a fax was disrupted, emails containing information about the status couldn't be delivered correctly and had been bounced. With this update emails with the status of not sended facsimiles are delivered correctly to the defined system administrator email address.

Misc: System crash while checking quota

File quotas are checked regularely on a Collax Server. This check could lead to a system freeze under special circumstances. Within this software update the quota check will be started efficiently and will be executed properly during the system boot process if the file system is in an consistant condition.

System Management: Administrative Roles

Certain administration tasks can be delegated to Collax system users with the function Administrative Roles. Since the last software version only empty forms had been displayed if a user was logged in. This is corrected, users with certain administration tasks can use the shown forms properly after this software update.


Notes

GUI: 4.1.0: Use of Config Files from Versions before 3.0.0

Configuration files of Collax server are used for easy managing of one or more servers. From this update on the validation of the files has been tightened to increase the usibility Please check the imported files that were saved before version 3.0.0 via the new AJAX gui and correct the values if necessary. The gui will give the information, if any value needs to be modified.

E-Mail: 1.0.2: Sender rewriting and multiple mail domains

The setting "Canonicalize sender address" can be used to rewrite internal email addresses to addresses that can be reached externally.

If you create multiple mail domains, the address is always rewritten to the first matching rewrite address. The order in which mail domains within the LDAP directory are considered for matches can change, though, and is more or less random.

You can work around this problem by configuring the email clients such that the external address is always used for outgoing e-mail.

E-Mail: 3.0.0: Internal User mailadmin with non-local User Database

When the authentication of users is made against a non-local database, e. g. ADS/PDC, please be aware that the user "mailadmin" does not exist on the ADS/PD, because this user is used internally in CBS. Otherwise problems will occur, e. g. during the creation of local mailboxes.

Web Proxy: 2.0.0: Filtering with squidGuard

When using the web-content filter with custom lists which contain URLS and/or domains and/or expressions, it is possible that the filter is not working correctly, and doesn’t block anything. In order to fix this problem please save each list and activate the configuration.

Web Proxy: 3.0.0: Enabling NTLM Authentication Whenever Possible

The NTLM authentication scheme that is usually used by windows client software is now enabled when the support for windows networks has been enabled. It is no longer necessary to enable it separately.

Web Proxy: 3.0.0: NTLM Authentication with Windows 2003 Server

Please note that for being able to authenticate with NTLM against a Windows 2003 Server Service Pack 1 has to be installed.

Web Proxy: 3.0.10: Access Denied Due to Error 250

If the above error message is displayed when surfing over the web proxy and rules are used to limit the web traffic, please check the rules configured under "Settings -> Filter -> Web-Content Filter -> Rules". Load every individual rule by double-clicking the entry. If the message "Please specify at least one URL or Cobion list" is displayed, specify the respective list to be associated with this rule or enable the menu item "All". If no such error message is displayed, you can return to the list of rules by clicking "Cancel". If you changed any of the rules, activate the configuration.

VPN: 4.1.0: VPN tunnel, Connection method Always

To establish an initiating VPN tunnel an additional VPN link with connection method "dial-in" was always required. With this update VPN tunnel with connection method "Always" don't presume a VPN "dial-in" link anymore.

Fax: 2.0.6: Spamlists

It can happen, that hylafax denies facsimiles from callers. In this case, you should deactivate fax spamlists. Please follow this description: The left menu shows Messaging/Fax/General. Deactivate 'Switch on number control'. You can save now and activate the configuration.

Hardware: 3.0.0: FritzCard AVM PCMCIA

It is possible, that problems occur when a FritzCard-AVM-PCMCIA and another different PCMCIA-card are used at the same time. In this case please call the support hotline.

Hardware: 1.1.4: Support for Class-1 Modems and Sedlbauer ISDN Cards

In some cases it was possible that faxes were not submitted correctly so that the header was cut or missing wholly.

If you experience these problems you should set the maximum receive rate to a value below 14.400 Bit/s. You can set this in the MODEM-Page on the GUI.

In order to be able to use the Sedlbauer-ISDN-Card for an analog connection to a provider, the following must be set in "Additional Hayes-Options" : "AT&FS14=10S15=0S18=1&E" followed by the MSN of the ISDN-Card.

Hardware: 1.1.4: Support for Analog Modems

The configuration used within CBS works properly with the most commonly used modems. Nevertheless, it is possible that specific modems cannot be initialized correctly. At the moment, analog links are not used as fallback by the "Link monitoring" .

Add-on Software: 1.1.4: AntiVir-Webgate

The AntiVir-WebGate does not yet support HTTPS which means that HTTPS-connections are not possible in combination with AntiVir-WebGate. So at the moment HTTPS-traffic bypasses this filter.

Misc: 3.0.6: Printer Support over IPP

The print service itself offers its services over the Internet Printing Protocol (IPP). This protocol is directly supported by MacOS X and most Linux distributions. Printers with Ethernet ports can be added to the queues on the Collax Business Server. These printers are also exported over the printer support of the SMB/CIFS server and can be addressed directly over IPP by Windows clients.

Misc: 3.0.10: Replication Logs of the MySQL Database

From update 3.0.12 on, replication logs of the MySQL database are no longer written. If you need these logs, enable the option "log-bin" in the file "/etc/mysql/my.cnf.template" by removing the comment sign preceding this option. Subsequently, run a full configuration over the web interface.

Misc: 3.0.0: SMB/CIFS Service and Group Policy

To integrate the Collax Server for authentification in a Windows server network, the SMB/CIFS service can be used. It is important, that this service has at least one policy group containing a local network.


Restrictions

File: 3.0.0: FTP and virtual hosts

Exporting virtual hosts via FTP is only possible with IP-based virtual hosts. Name-based virtual hosting with FTP is not possible due to limitations in the FTP protocol itself.

E-Mail: 3.0.0: Alternative Namespace and Web Mail

The initial setup of the mailboxes is in conjunction with the option "Alternative namespace". This means that you should decide which format you want to use before the mailboxes are created. When this option is enabled the folders Sent, Draft and Trash are below the folder Inbox. When this option is disabled the folders Sent, Draft and Trash are on the same level as the folder Inbox. When you change the option "Alternative namespace" after the creation of the mailboxes, the Webmailer will show up a error in the following form: "Query: CREATE "INBOX.Sent" and "Reason Given: Invalid mailbox name". The name of the folder can vary.

Web Proxy: 3.0.0: NTLM-Authorization with imported groups

In order to accomplish NTLM-Authorization with an imported group, this group must be a global group on the AD-Server and must be the primary group of the user.

Net: Traffic Shaping and Link Fallback

There are limitations in the functionality of bandwith management if used in combination with link fallback. If a main link connection fails bandwith management cannot be ensured if the connection changes to an indirect link like a VPN or route link.

VPN: 2.0.0: Asymmetric Routing

It is not possible to use VPN connections with asymmetric routes if the system is both a router and an IPSec gateway.

This is because IPSec accumulates a checksum of the IP header contents. With asymmetric routing, the IP addresses of the links - over which the data is transmitted and received - do not correspond.

VPN: 2.0.0: Multiple IPSec Connections Between Two Security Gateways

It is not possible to establish multiple IPSec connections for the same networks and the same two security gateways. This is due to how OpenSWAN works internally (keyword "eroutes". Those having trouble with OpenSWAN know what is meant here; a deeper analysis would go beyond the scope of these release notes).

You can set up a GRE-tunnel over the IPSec-tunnel to bypass this problem.

VPN: 4.1.0: SHA2 encryption

The encryption algorhithm SHA2 is used in VPN tunnels. In kernel 2.6 this encryption method causes errors in the service OpenSwan and the VPN tunnel crashs. For that reason this method can't be chosen for VPN links on Collax Server until it is fixed. As an alternativ the method SHA1 can be chosen. Please note that the encryption method needs to be changed and the other VPN gateway modified. The upgrade will choose SHA1 if SHA2 was setup before.

LDAP: 4.1.0: Change of LDAP Base DN

The base DN of the LDAP directory cannot be changed retroactively through the GUI. The reason for this is that not all directory data can be rebuilt from the configuration.

Although data is lost, the easier way is to delete the files in the "/var/lib/openldap/openldap-data" directory, and then recreate the directory.

To achieve that, proceed as follows:

Procedure

Beware: all passwords of all users will be lost after having changed the base DN. You have to enter them again via the Admin GUI.

Add-on Software: 3.0.10: Transparent Proxy, AntiVir Web, and "Show download status"

If a transparent web proxy is activated and the Antivir Web virus scanner is activated together with the "Show download status" option, the download no longer works properly. The download progress is displayed but does not change; after a short while, the browser displays an error message indicating that antivir.webgate cannot be found. To make the download work with the progress bar, enter the proxy in the client or disable the "Show download status" option.


Known Issues

Open-Xchange WebDAV iCal-Interface without Function

In the current Version of Open-Xchange the iCal interface broken.

Misc: Rsync

Rsync has been updated to version 3.0.4 and provides now acl support.