Posts

Showing posts from June, 2017

Captive Portal Fails to Load Properly or Returns 404

Captive Portal Fails to Load Properly or Returns 404 https://www.youtube.com/playlist?list=PL0tdVaIlkLqvH63TdkYJMztjHIkMtpge4

This article describes how to fix the issue whereby captive portal fails to load, is returned only partially without the user / pass fields or returns a 404 error. This also mitigates issues with:slow access to a Mobile Access gateway on wireless or lossy networks. The mechanism responsible for the problems is “SACK” – an acronym for Selective ACKknowledgment. The “SACK-permitted” option and “SACK” option alter the acknowledgment behavior of TCP: SACK-permitted The SACK-permitted option is offered to the remote end during TCP setup as an option to an opening SYN packet. The SACK option permits selective acknowledgment of permitted data. The default TCP acknowledgment behavior is to acknowledge the highest sequence number of in-order bytes. This default behavior is prone to cause unnecessary retransmission of data, which can exacerbate a congestion condition th…

How to Fix the TCP packet out of State in Checkpoint Firewall

Image
How to Fix the TCP packet out of State in Checkpoint Firewall How to Fix the TCP packet out of State in Checkpoint Firewall :- The “TCP Packet out of state” error message means that FireWall-1 sees a TCP ACK packet for which it does not have a matching state table entry. This may occur because the connection was inactive for a period of time or the connections tables were flushed (e.g., because of a policy installation or restart). Today, i am going to show you How to fix this problem.  Open Checkpoint Smart Dashboard on your Smart console PC. Now click on the Global Properties icon on the top icon list. now navigate to Stateful Inspection and increase the “TCP end timeout” value to 60 sec. now click on the 
The Best Way to Learn IT in the Hindi Language

Committed to providing up to date IT training in the Hindi language
Online learning is here! E-learning is a buzzword in many businesses. It's time for the student to take command of their learning without using a classroom. The Internet is a resource that is always accessible and always convenient, welcome to Network Shield Academy. Network Shield Academy is breaking down the barriers that millions of Urdu, Hindi, and Punjabi speakers face by providing free and fresh Information Technology-based educational resources to students around the globe.

Currently, we have uploaded our blogs and videos in Checkpoint firewall and VPN. Time to time we will upload our lecture and blogs in different technologies like Cisco, Fortinet, Palo Alto etc. Besides that, we will upload videos about "Tech Market" where we will upload videos about technical things going on Market.

How to enable Rate limiting for Streaming media in Checkpoint GAIA

Image
How to enable Rate limiting for Streaming media in Checkpoint GAIA How to enable Rate limiting for Streaming media in Checkpoint GAIA :- Gaia is Check Point’s next generation operating system for security applications. In Greek mythology, Gaia is the mother of all, representing closely integrated parts to form a single, efficient system. The Gaia Operating System supports the full portfolio of Check Point Software Blades, Gateway and Security Management products.
Gaia is a single, unified network security OS that combines the best of Check Point’s SecurePlatform operating system, and IPSO, the operating system from the appliance security products. Gaia is availablefor all Check Point security appliances and open servers. Most of the time it’s good to block Streaming media in your network. But in some cases like Marketing People you have to give the access to Streamining media. Streaming media are main source of bandwidth hog, in this condition you have to rate limit the streaming media…

Secure your network for Most common Attacks with Checkpoint Firewall

Image
Secure your network for Most common Attacks with Checkpoint Firewall Secure your network for Most common Attacks with Checkpoint Firewall :- Securing  network is always night-mare for IT-administrators but present day most of the firewall’s vendor’s like checkpoint , Cisco, Paloalto etc.. are providing prevention on most common attacks like DOS attack, SYN-Flood attack, IP-Spoofing, Man-in-the Middle attack, Port scanning , Malicious IP’s , DNS CachePoisioning , Application layer attacks like SQL Injection , Cross site scripting etc. Today i am going to show you How to prevent Common attacks with Checkpoint Firewall ( GAIA R 77 ) .  Checkpoint GAIA comes with a Software blade of IPS that provide the protection against most network attacks. You have to enforce IPS protection on your particular gateways. Open Checkpoint Smart Dashboard and navigate to IPS blade option. Click on the Enforcing Gatewaysoption and select your gateway and click on the Edit option and select the Recommended or 

Block a list of URL address in your network with Checkpoint GAIA

Image
Block a list of URL address in your network with Checkpoint GAIA Block a list of URL address in your network with Checkpoint GAIA :- Have you ever faced a situation of blocking particular URL or group of URL’s in your network ? If yes, then this tutorial is completely for you.  Checkpoint comes with Application & URL filtering software blade for this job but today i am going to show you how to block a list of URL address in your network with IPS software blade. You have to understand the basic DNS operations, When user is trying to open a Website then first it’s communicating with a Local DNS server for DNS query then Local DNS server is forwarding this request to particular webserver. actually what actually we are going to do here is blocking DNS request on Local network. To do so, Open Smart Dashboard on your console PC. Navigate to IPS > Protections > By Type > Application Control > in the right-pane search for Domain Black List and double click on it .

How To Troubleshoot SIC-related Issues in Checkpoint GAIA

Image
How To Troubleshoot SIC-related Issues in Checkpoint GAIA How To Troubleshoot SIC-related Issues in Checkpoint GAIA:- SIC or Secure Internal Communication is how communicating components authenticate between themselves and the Security Management Server. When successfully authenticated, communication between these components is secure. This Check Point feature ensures that these modules can communicate freely and securely using a simple communication
initialization process, The following security measures are taken to ensure the safety of SIC:- Certificates for authenticationStandards-based SSL for the creation of the secure channel3DES for encryption Almost everytime SIC issues are due to :-
1. mismatch in activation key or
2. sic ports being blocked Today i am going to show you, How to troubleshoot mismatch SIC? To do so login in to Firewall