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How to manage several WFilter servers from a central location?

Published on 2012-09-10 03:45:51

When you need to manage several offices internet access, it will be helpful if you can do the management in a central location. This tutorial will guide you to manage several WFilter servers within a same user interface. 1. Edit WFilter servers Step1: In WFilter's dashboard, click "Edit" to define remote servers. Step2: add servers. Please notice: Remote server's admin password is required. The remote WFilter server shall be configured as "Allow Remote Access" in "System Setting [..]

How to block stock market trading programs in network?

Published on 2012-08-28 02:23:50

Employees can spend hours on reading market data and online stock trading. To keep productivity, it is necessary to block online trading traffic during working hours. This tutorial will guide you to block "Nest trader" and "(IIFL) Trader Terminal" traffic in your network. Since WFilter does not have these two protocols supported in default, you need to add customize protocols in "System Settings"->"Customize Protocols". 1. Block IIFL trade terminal 1). Add a new protocol named "IIFL Trad [..]

How to block youtube at work of network computers?

Published on 2012-08-16 22:51:36

How to block youtube website access of network computers?

Published on 2012-08-16 22:51:36

Since youtube video streaming can consume a lot bandwidth, you might want to block youtube access during working hours. This tutorial will guide you to setup an internet policy to block youtube access at work with WFilter 4.0 version. You can block youtube at different levels: Block youtube access completely. Block youtube access during working hours. Block youtube videos, but allow youtube website. 1. Block youtube website completely You can block youtube with WFilter's "Website black [..]

How to customize WFilter reports by directly querying the database?

Published on 2012-08-02 23:49:53

Though WFilter already has many reports by default, there has the chance that you need other report formats or data. In this case, you can directly query the database tables to get what you need. It's complicated to customize reports for WFilter file-based version. So you need to install WFilter database version first. For steps to install WFilter database version, please check: WFilter Database Version Installation Guide There has a "web surfing time report" in "Detailed Reports"->"Web Rep [..]

How to deploy WFilter in a VMware ESXi server?

Published on 2012-07-24 00:42:10

VMware ESX and ESXi server are widely used in business networks. This document will guide you to deploy WFilter in a ESXi server to filter internet traffic of virtual systems. In a VMware ESXi server, WFilter can work both in "Pass-by" and "Pass-through" modes. For more details about these two modes, please check: WFilter deployment modes It is simple for WFilter to work in "Pass-by" mode in a VMware ESXi server. You simply need to install WFilter in a VMWare virtual computer and allow "Prom [..]

How to whitelist yahoo mail and hotmail websites in WFilter?

Published on 2012-06-03 22:09:20

How to whitelist yahoo email and hotmail websites? Sometimes you might want to block all websites with exception. In that case, you can enable WFilter's "website whitelist" to do this. However, websites can be complicated with differenet images/ad/files hosts. It will require you to whitelist several domains for a webpage to be properly loaded. For example, mail.yimg.com is also requiried for images in yahoo email. In this topic, I will demonstrate you to identify the required domains for [..]

How to set a redirect denial page in WFilter?

Published on 2012-04-23 00:06:00

Sometimes you might want to redirect blocked websites to a new URL. To do this, you need to edit WFilter denial page in source mode. This tutorial will guide you to configure a redirect denial page in WFilter. First, edit a blocking level Edit a blocking level and new a denial page. Please don't forget to list your new URL in the exception list. Second, edit the denial page in source mode. A javascript code is required: window.location="http://www.yourwebsite.com/..."; Third, unch [..]

When shall you use two network cards for monitoring and blocking?

Published on 2012-04-02 22:40:46

In "pass-by" filtering mode(WFilter works on a mirroring port), WFilter sends RST packets to block TCP connections. However, if outgoing traffic is limited on the blocking adapter, blocking feature of WFilter might not be working. The default settings of WFilter use a same adapter for monitoring and blocking. However, it will not work if a following condition is met. The monitoring switch does not allow outgoing traffic on the mirroring port. You can check this by "ping" other computers in [..]

How to use the WFilter block the VNC?

Published on 2012-04-02 02:01:30

In computing, Virtual Network Computing (VNC) is a graphical desktop sharing system that uses the RFB protocol to remotely control another computer. It transmits the keyboard and mouse events from one computer to another, relaying the graphical screen updates back in the other direction, over a network. VNC is platform-independent – a VNC viewer on one operating system may connect to a VNC server on the same or any other operating system. There are clients and servers for many GUI-based opera [..]

How to block VNC traffic of network computers with WFilter?

Published on 2012-04-02 02:01:30

VNC® provides secure remote access computers from any location for your home and organization. RFB is the protocol used in VNC and its derivatives. This tutorial will guide you to block VNC with "WFilter Enterprise 4.0". Because blocking of VNC is not supported by default in WFilter, in this example, we uses "Customize Protocols" feature of WFilter to define the VNC protocol. First, Add "VNC" Protocol in "Customize Protocols". In "Customize Protocols", new a protocol named "vnc". VNC [..]

ROS port mirror setup

Published on 2012-03-02 02:22:40

WFilter deployment with RouterOS's port streaming feature.

Published on 2012-03-02 02:22:40

Installed on a personal computer or server computer, RouterOS turns the computer into a network router, implementing features such as firewall rules, virtual private network (VPN) server and client, bandwidth shaping and quality of service, wireless access point functions and other commonly used features for routing and interconnecting networks. To implement internet monitoring and more powerful internet filtering features with your RouterOS, you can enable RouterOS's "port streaming" feature [..]

Modify ESET personal firewall settings to make WFilter work.

Published on 2012-02-16 03:02:52

All internet packets are required for WFilter to parse network activities. However, the ESET personal firewall blocks non-local computer network packets by default. Therefore, when the ESET personal firewall is enabled, WFilter can not monitor itself computer because other computer's network packets are all blocked by ESET. To make WFilter work with ESET personal firewall, you need to adjust the firewall settings. The following example demonstrates how to configure ESET Smart Security 5.0: [..]

WFilter adds solution to monitor terminal server users.

Published on 2012-02-15 07:51:08

Terminal Services allows IT departments to install applications on a central server. For example, instead of deploying database or accounting software on all desktops, the applications can simply be installed on a server and remote users can log on and use them via the network. This centralization makes upgrading, troubleshooting, and software management much easier. However, since all terminal clients share the server's network, it becomes difficult to monitor/filter individual users interne [..]

How to block google mail (gmail) access of network computers?

Published on 2012-02-07 07:08:28

Sometimes you might want to block google mail(gmail) access in your network. This tutorial will guide to block gmail with WFilter. Google mail( gmail ) supports vary kinds of access, including: Web access via HTTPs protocol. SMTP over SSL for sending emails. POP over SSL for receiving emails. IMAP over SSL for receiving emails. So for complete blocking of gmail, you need to enable blocking of certain email protocols, and also need to enable "HTTPS black list" to block gmail web access. [..]

Does port mirroring influence my network speed?

Published on 2011-11-02 09:25:56

For pass-by monitoring and filtering, you need to setup a mirroring port in your switch. When port mirroring feature is enabled, the switch will replicate data from other ports onto a single port for monitoring purpose. Since the original packets will not be hold or delayed, port mirroring does not affect your network speed theoretically. However, inproper port mirroring settings will cause heavy load in your switch and even cause packet loss. So please consider the following points when con [..]

How to filter the internet access for business network?

Published on 2011-10-30 08:26:58

The internet has been turned to an invaluable tool in business. However, the availability of internet currently has given an important risk factor to the employer liability and at the same time consumes the employers 90% of hours in productivity. Therefore internet access shall be filtered and restricted to keep the working productivity of your employees. There have several ways to filter internet access: 1. Setup an network internet filtering program. With a filtering program, you will be [..]

WFilter 4.0 is coming.

Published on 2011-09-30 04:34:17

WFilter 4.0 version will be released soon after nearly two years development. The new version made a lot improvement and optimization of current features. Also a series of new features are added, such as "WFilter Dashboard", "Central Management of WFilter servers", "WFilter Local Account", "Multi-adapter Monitoring", and several new alert types. Below is a brief introduction to these new features: 1. WFilter Dashboard WFilter Dashboard allow you to check the monitoring status, log storage s [..]

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Blog Feed: IMFirewall Blog - Block Internet Access,Block P2P,Web Filtering

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