Programing4Us - Enterprise

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Java Tutorials : Nested For Loop (part 2) - Program to create a Two-Dimensional Array

Program to create a Two-Dimensional Array

Java Tutorials : Nested For Loop (part 1)

Here is a collection of few examples for NESTED FOR LOOP

How to use scanf in C.

The main reason beginners have trouble is scanf works like a pointer so you have to point to what you are getting input for

Dynamic Arrays: Using malloc() and realloc()

This had bugging me on table of listening during a small moment, but I appeared it. I will share my knowledge with the rest of the world! If you must take data of the user who could be any length, you could define a really large line as thus

Review : D-Link DSP-W215 mydlink Wi-Fi Smart Plug

Install it with a domestic small apparatus, via a mobile APP, and you can commutate the apparatus “Walks/remote Arrêt” from anywhere in the world. The Internet access is a need to use the APP and Smart Plug.

Review : Linksys EA9200 Tri-Band Smart Wi-Fi router

The Linksys EA9200 is a new tri-band AC3200 router that offers an additional 5GHz Wi-Fi network over the typical Wi-Fi 802.11ac router. In total, this router supports a single 2.4GHz network and two 5GHz networks.

Identity on Cisco Firewalls : Administrative Access Control on ASA

The concepts previously discussed for IOS are still valid for ASA, but some configuration and implementation details are different. The examples analyzed in this section point out the relevant distinctions.

Identity on Cisco Firewalls : Administrative Access Control on IOS

Cisco Secure ACS implementation of the TACACS+ server portion helps to deal with the issues just raised. By supporting the creation of Shared Profile Components that can be applied to any number of user groups, scalability and manageability result.

Identity on Cisco Firewalls : User-Based Zone Policy Firewall (part 3) - Integrating Auth-Proxy and the ZFW

The previous sections detailed two methods of associating users to local groups in IOS. The acquired user-to-group mapping information will now be applied to create distinct ZFW policies.

Identity on Cisco Firewalls : User-Based Zone Policy Firewall (part 2) - Establishing user-group Membership Awareness in IOS - Method 2

This is the second method to provide IOS with user-group membership visibility. This second technique uses a lot of indirect references, which brings more complexity.

Identity on Cisco Firewalls : User-Based Zone Policy Firewall (part 1) - Establishing user-group Membership Awareness in IOS - Method 1

The method relies on a Cisco AV-Pair called supplicant-group, which directly corresponds to the user-group to which the user should be assigned. This is the simplest way to establish user-group membership visibility on the NAS side.

Identity on Cisco Firewalls : IOS User-Level Control with Auth-Proxy (part 4) - Combining Classic IP Inspection (CBAC) and Auth-Proxy

As stated earlier, despite performing authorization, Auth-proxy is not inherently stateful. This behavior can be changed through interactions with technologies such as CBAC or ZFW. The current scenario dedicates some time to the study of CBAC and Auth-Proxy integration.

Identity on Cisco Firewalls : IOS User-Level Control with Auth-Proxy (part 3) - IOS Auth-Proxy with Downloadable ACLs

The first Request-Accept pair shows the ACS:CiscoSecure-Defined-ACL Cisco AV-Pair, which contains the name of the DACL to be assigned. The second Access-Request uses the DACL name as username and a “NULL” value for the password.

Identity on Cisco Firewalls : IOS User-Level Control with Auth-Proxy (part 2) - IOS Auth-Proxy with Downloadable Access Control Entries

Example 4 illustrates Auth-proxy performing the interception and interacting with the RADIUS server, whereas Example 5 shows the authentication and authorization results.

Identity on Cisco Firewalls : IOS User-Level Control with Auth-Proxy (part 1)

The previous section presented a thorough analysis of the Cut-Through Proxy operation on the ASA family. In the current one a similar IOS mechanism called Auth-Proxy is covered in detail.

Identity on Cisco Firewalls : ASA User-Level Control with Cut-Through Proxy (part 6) - HTTP Listener

The analyses of Scenarios 1 through 4 focus on illustrating the authorization processes that can extend the basic Cut-Through Proxy authentication functionality.

Identity on Cisco Firewalls : ASA User-Level Control with Cut-Through Proxy (part 5) - Cut-Through Proxy with Downloadable ACLs

Scenario 4 differs from Scenarios 2 and 3 because it uses another form of authorization ACL called Downloadable ACL (DACL). These are ACLs defined as Shared Profile Components in CS-ACS and can be later assigned to user groups.

Identity on Cisco Firewalls : ASA User-Level Control with Cut-Through Proxy (part 4) - Cut-Through Proxy with Locally Defined ACL

This scenario illustrates how CS-ACS can instruct the firewall (NAS) to assign a locally defined ACL as part of the authorization process. This may be interesting if the administrator does not want to download long ACLs but has the inconvenience that per-user ACLs need to be maintained in each NAS.

Identity on Cisco Firewalls : ASA User-Level Control with Cut-Through Proxy (part 3) - Cut-Through Proxy with Downloadable ACEs

Example 3 introduces the usage of the per-user-override option when defining an access-group. This instructs the ASA to prefer any kind of dynamic authorization attributes (individual ACEs, local ACL, and Downloadable ACL) over an existent static ACL.

Identity on Cisco Firewalls : ASA User-Level Control with Cut-Through Proxy (part 2) - Simple Cut-Through Proxy

Figure 3 presents a sample RADIUS accounting record in CS-ACS. In this particular example, you can see in the “cisco-av-pair” column that both HTTP and HTTPS activities are registered.

Identity on Cisco Firewalls : ASA User-Level Control with Cut-Through Proxy (part 1)

In many practical situations, there is a requirement to validate identity and associate the pertinent access profile before allowing user traffic to flow through the firewall. Cisco ASA devices can fulfill this service need by using the Cut-Through Proxy feature.

Identity on Cisco Firewalls : Selecting the Authentication Protocol

Firewalls acting as AAA clients rely on an authentication protocol to communicate with the AAA server and determine User Identity.

Commercial Backup Utilities : Ease of Recovery, Robustness, Automation, Volume Verification

Horrible things happen to backup systems. Systems reboot and get powered off. Backup drives hang, libraries jam, and networks die. The “robustness” of a product can be measured by how well it deals with these sorts of problems.

Commercial Backup Utilities : Ease of Administration, Security

If a person is administering a relatively large backup system, the activities in the following list are performed all the time. How easy is it to do these things with the product you are considering?

Commercial Backup Utilities : Support of a Standard or Custom Backup Format

Vendors are on both sides of this debate. What follows is my best effort to explain the pros and cons of each side. You have to choose which pros and cons are most important to you.

HP Network Node Manager 9 : Discovering and Monitoring Your Network - Examining discovery results (part 4)

As a state poller configuration example, let's take the previously described network (the diagram in the section entitled How to plan state polling), and configure state poller to fulfill the following requirements

HP Network Node Manager 9 : Discovering and Monitoring Your Network - Examining discovery results (part 4)

There are nodes or interfaces in a network, which need more accurate monitoring (more frequent polling). It is not performance effective to set polling intervals for a whole network, based on most frequent polling demand.

HP Network Node Manager 9 : Discovering and Monitoring Your Network - Examining discovery results (part 3)

Sometimes, when your discovered network looks far from what you expected, it is easier to wipe the whole NNMi database and start discovery from scratch. It is very common during implementation, when the initial discovery filters don't work as they were supposed to.

HP Network Node Manager 9 : Discovering and Monitoring Your Network - Examining discovery results (part 2)

If the address or interface is set to Not Managed using Direct Management Mode, NNMi calculates the management mode for all associated objects. The following table provides a list of possible values on every object.

HP Network Node Manager 9 : Discovering and Monitoring Your Network - Examining discovery results (part 1)

Discovery is a continuous process. After the initial discovery is completed, the devices are periodically discovered for configuration changes so that NNMi can display the most accurate map.

HP Network Node Manager 9 : Discovering and Monitoring Your Network - Limiting discovery with filters

Discovery configuration in NNMi not only requires methods for discovery boosting (seeds and auto-discovery rules), but limitations as well. So NNM has boundaries where discovery should be stopped. This section describes the discovery filters used in NNMi.

HP Network Node Manager 9 : Discovering and Monitoring Your Network - Boosting up discovery with seeds

Sometimes, NNMi may have difficulties discovering some nodes. For example, nodes that are far away from NNMi in terms of number of hops. In such cases, we may want or even need to boost a discovery, forcing NNMi to load some devices automatically.

HP Network Node Manager 9 : Discovering and Monitoring Your Network - Configuring communication protocols (part 2)

Your network devices may support various versions of SNMP, starting from v1, v2c, and SNMPv3. You can set the minimum security level that is acceptable to NNMi.

HP Network Node Manager 9 : Discovering and Monitoring Your Network - Configuring communication protocols (part 1)

In order to manage a network, management tools use several communication protocols, which assure accurate and detailed information. The challenge for the management tool is to know which protocol to use, and how it should be configured so that it could communicate with the managed nodes.

HP Network Node Manager 9 : Discovering and Monitoring Your Network - How discovery works

NNMi uses a list of protocols and techniques to discover the network. It discovers nodes and their configuration, including interfaces and connection information (including Layer 2 and Layer 3 information).

Commercial Backup Utilities : Reduction in Network Traffic

One of the best ways to perform backups is to install a completely separate network to carry all the backup traffic. However, many people do not have the funding necessary to set up such a network, so they need to be careful about how their backup system influences the network that it shares.

Commercial Backup Utilities : Data Requiring Special Treatment, Storage Management Features

All commercial backup products can back up normal filesystem data. However, there is a lot of data that does not reside in a normal filesystem. Some data does reside in a filesystem but still requires special treatment before it can be backed up.

Commercial Backup Utilities : Simultaneous Backup of Many Clients to One Drive, Disk-to-Disk-to-Tape Backup, Simultaneous Backup of One Client to Many Drives

There are now backup drives that can write much faster than many disk drives. Backup drives now use Fibre Channel and large buffers, and sometimes write multiple streams of data to the drive at once.

Commercial Backup Utilities : Backup of Very Large Filesystems and Files, Aggressive Requirements

Your recovery time objective, or RTO, is how quickly you want the system to be recovered. RTOs can range from zero seconds to many days, or even weeks. Each piece of information serves a business function, so the question is how long you can live without that function

The HP Virtual Server Environment : Virtual Partition Example Scenario (part 8) - Using a Script to Migrate CPUs

Having booted the vPars and with them up and running, the example could stop here. Each of the vPars is running as an independent operating system with full operating system isolation.