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ne of the most important aspects of a network operating system is its security, so in this chapter I ll discuss security in Open Enterprise Server Security in an OES environment consists of various levels First, there is login security This is the security related to the use of an account Login security determines when a user can log in to the network, from what network address he can log in, and it defines password policies Login security is also known as authentication, which was covered in 9, so this chapter presents different techniques that can be used to authenticate securely to the network The next level of security is file system security With file system security, the administrator determines to which files and directories on the server a user may get access, and what exactly he can do with these files.

Use nouns to describe classes. Class names should match the names of the files in which they are defined. Interface names begin with an I. Use verbs to describe methods. Note that Visual Studio is not consistent with this naming convention.

Note We did not install the Oracle driver because our Oracle Universal Installer (OUI), which is required to install the Oracle-supplied ODBC driver) complained about version problems. This issue seems to occur when you are using a newer version of the OUI than the ODBC driver supports. One work-around would be to install an older version of the client tools (thereby installing an older version of the OUI software). But after quite a few attempts, we were unable to find a version that was suitable and that would still successfully connect to the database using the client tools. So, we used the Microsoft ODBC driver instead.

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The administrator determines file system security with rights and attributes that are applied on these files and directories Novell offers excellent options for file system security for both OES - Linux and OES - NetWare The third component of OES security is eDirectory security By means of eDirectory rights, a user is granted rights to how he can access objects in eDirectory eDirectory security is fine in most cases with its default settings, but for certain tasks, additional eDirectory security must be defined Both file system and eDirectory security belong in the authorization category The fourth component in a secure network environment is the public/private key infrastructure This component contains many elements that help you use encryption in your network Of these, the certificate server regulates the use of public and private keys in the network.

These keys are necessary in all situations where a user wants to make a secure connection to a server You ll go quite far with the default settings, but sometimes it s necessary to perform some certificate server management Managing encryption falls under the security category of confidentiality The last part of security concerns the server console itself If a hacker can get access to the console of your server, he s basically in and can get access to all your server files, causing untold damage Therefore, I ll take some time to discuss server console security as well More details about securing the OES - Linux or OES - NetWare console can be found in s 4 and 5 of this book..

After you have selected the driver, you are presented with the Microsoft ODBC for Oracle Setup dialog box, as shown in Figure 2-24. Enter a name for your DNS, a description (optionally), a username (optionally), and a target server. In this example, we entered the name corresponding to our TNSNAMES entry in the Server field. This is by far the simplest way to enter the connection details If you enter a username, it will be used as a default whenever you try to use the DSN.

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