gre tunnel basics
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MikroTik Site to Site GRE Tunnel Configuration with IPsec
VPN (Virtual Private Network) is a technology that provides a secure tunnel across a public network. A private network user can send and receive data to any remote private network using VPN Tunnel as if his/her network device was directly connected to that private network. MikroTik provides GRE (Generic Routing Encapsulation) tunnel that is used to create a site to site VPN tunnel. GRE tunneling protocol which can encapsulate a wide variety of protocols creating a virtual point-to-point link was originally developed by Cisco. GRE is a stateless tunnel like EoIP and IPIP. That means if the remote end of the tunnel goes down, all traffic that was routed over the tunnels will get blackholed. To solve this problem, RouterOS have added ‘keepalive’ feature for GRE tunnels. By default keepalive is set to 10 seconds and 10 retries. GRE adds an outer header mentioning the entry point of the tunnel (SourceIP) and the exit point of the tunnel (DestinationIP) but the inner packet is kept unmodified. GRE tunnel only encapsulates IP packets but does not provide authentication and encryption. GRE tunnel with IPsec ensures IP packet encapsulation as well as authentication and encryption. IPsec usage makes your packets secure but [...]
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Unlocking Digital Opportunities: A Beginner’s Guide to Computer Networking | October 14, 2025
Summary Computer networking has created the digital world, enabling communication networks that unite various regions of the world and connect any device in some way or another. Networking provides new opportunities to secure employment, act as freelance workers, or even pursue volunteer work, which is why it is worth investing in for career development. Being practical should be valued even more than theory. Even after setting up a home lab, reviewing real projects, and consulting trusted sources, you will learn [...]
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OpenDNS Family Shield Configuration in MikroTik RouterOS 7 | August 30, 2024
OpenDNS is a DNS based free web content filtering software. It helps to keep our home or office network free from malware, virus and adult content. Configuring OpenDNS in our Home of Office routers, we can easily keep safe our internet content. OpenDNS provided OpenDNS Family Sheild solution that keeps our kids safe online. OpenDNS Family Shield filters all adult content websites as well as virus and trojan. OpenDNS Family Shield is preconfigured to block adult content. So, our children [...]
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MikroTik Send Browsing Log to Remote Syslog Server | August 18, 2019
MikroTik RouterOS is capable of logging various system events as well as user browsing information. Logs can be saved in router’s memory (RAM), disk, file, sent by email or even sent to remote syslog server. Sometimes it may require saving user browsing log by the law. So, a syslog server is an essential part to any network. In this article, I will discuss how to configure MikroTik Router to keep user browsing log and send that log to remote syslog [...]
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MikroTik WebProxy Log Analyzer Configuration | August 30, 2016
MikroTik RouterOS generally logs various system events and status information. Logs are mainly saved in router’s memory (RAM) or disk. MikroTik logs can also be sent by email or even can be sent to a remote syslog server. All logs those are saved in router’s local memory can be viewed from Log menu. Any log entry that is saved in local memory contains time and date when event occurred, topics that this message belongs to and message itself. But local [...]
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Guest WiFi – How to Setup on MikroTik AP | April 30, 2024
Guest WiFi helps to keep your network safe and secure. Any sensitive wireless network should have a guest network. So, Guest WiFi is so essential for an office network. In a corporate office, guests or visitors frequently come and get connected to get internet for a few times. It is so much security issue to keep guest or visitor in the core network because among them someone can damage important network resources. So, to keep them isolated from the core [...]
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Internet Connection Sharing Ethernet to Ethernet | September 22, 2015
Windows is the most popular operating system to any computer user. It is said that no computer user cannot go a single a day without windows operating system. Windows has a lot of default internet features which help to connect our computer to internet as well as it provides internet connection sharing facility. With Internet Connection Sharing (ICS) feature, you can turn your laptop into Wi-Fi hotspot or turn your desktop into a router to share your broadband connection with your family [...]
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How to Customize MikroTik Hotspot Login Page | September 12, 2020
MikroTik Hotspot is an awesome service that can be customized according to any organization need. MikroTik Hotspot is able to authenticate and authorize network users so easily. Besides premium Hotspot service, it can also be used as a public Hotspot network. Although public network is a free network service, it can be a better source of income by serving ads. As no user can get internet access without visiting Hotspot login page, the login page is main space for serving [...]
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HTTP vs. HTTPS: The Impact Of Using SSL Certificates | November 29, 2021
Google and cybersecurity experts continue to make clarion calls to web admins and website owners to switch from HTTP to HTTPS. But is there any difference between the two other than the extra “S” at the end of HTTPS? Not everyone understands the differences between HTTP and HTTPS and why the difference is so significant. In this post, we will discuss the differences between HTTP and HTTPS, the reasons why you need to switch from HTTP to HTTPS, and the [...]
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Internet Content Filtering in MikroTik Router using OpenDNS | August 22, 2024
Internet content is always not safe for our work or home network. We always face malware, phishing and adult content which are harmful for office or home internet. Using web content filtering software, we can easily get rid of this harmful content. OpenDNS is a cloud-based internet content filtering solution that helps to keep our office or home internet free from malware, virus and adult content. Configuring Free OpenDNS Home Internet feature with our Home WiFi Router, we can easily [...]
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