Connect KVM over GRE

Hi Folks, As you may know, Libvirt virtual network switches operates in NAT mode in default (IP Masquerading rather than SNAT or DNAT). In this mode Virtual guests can communicate outside world. But, Computers external to the host can’t initiate communications to the guests inside, when the virtual network switch is operating in NAT mode. […]

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Sharing Internet in Linux

Hi Folks! Today, I installed Ubuntu 18.04 LTS on my personal laptop. But I could not connect to the Internet as Ubuntu does not recognize my wireless driver. After couple of googling I have found my wireless driver .[model:Broadcom Limited BCM43142 802.11b/g/n]. But the problem is how I am going to hook-up to the Internet  […]

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VLAN Creation on KVM-I

Creating a VLAN on KVM requires more raw networking knowledge in comparison to VMware world. KVM requires some Linux networking knowledge beside general understanding of computer networks. I did  not see more information on the Internet about that. To fill this gap I write this post. 🙂 Actually there are more than one methods creating […]

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GNS3 couldn’t run /usr/bin/dumpcap in child process: Permission Denied.

Ubuntu 16.04 LTS GNS3: Problem: couldn’t run /usr/bin/dumpcap in child process: Permission Denied. Solution: 1- Enable non-root user to capture network traffic by reconfiguring wireshark. gns3a@gns3A:~$ sudo dpkg-reconfigure wireshark-common 2- Add wireshark group to the user that you want to start GNS3 program. gns3a@gns3A:~$ sudo gpasswd -a $USER wireshark 3- Logout and Login again.   […]

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Connect to Real World With GNS3

GNS3 is a GPL licenced cross-platform network simulation program. It enables us both virtual and physical networks operate together. It emulates Cisco IOS, doing so we have real Cisco device capability in a Virtual Machine. You can also analyze the packets with Wireshark. One exception that GNS3 has limited device capability as some Cisco devices impossible […]

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Port Forwarding on Windows 10

Hi Folks! Port Forwarding is a way of making  computer, in which located private LAN, accessible on the Internet. Even though it is behind the router. It is used for gaming, surveillance IP cameras, accessing your personnel computer on the Internet. Actually, in this post port forwarding is used for accessing a web page that […]

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Dynamic DNS

Hi Folks! It has been long time, I have not posted anything since December.  Actually I had to do many things. I was battling upkeep of Company Servers and upgrading them. But during that time  I learned many things and I would like to share  with you all. In this post I will introduce you […]

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