It happens to lost the password for Alcatel Omniswitches 6250/6450 series.To recover the password you have to press “s” key at booting that will boot your switch into some kernel location where you can delete user table with passwords included (it means you will reset/delete current password list) WARNING: Stopping in miniboot as directed by boot flags… [Miniboot]->cd "network" value = 0 = 0x0 [Miniboot]->ls . .. userTable5 lockoutSetting policy.cfg ssh_host_dsa_key ssh_host_dsa_key.pub value = 0 = 0x0 [Miniboot]->xdelete "userTable5" value …
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For multiple locations we decided to use this model because if very cheap and powerful.First we had to decide to use between Zerotier and Wireguard but because of the time that zerotier is very easy to configure and because branches only have to access a webserver page we choose Zerotier. First tutorial on the internet showed us that is working with no problems on verson 2.X from Ubiquiti but we wanted go further just to be easier later on. In …
As i got this for free from Cisco and i had to get rid of the firmware and license, OpenWRT is what we actually need. Step1. Open the case.Step2. You need a UART serial console. For this i used Raspberry Pi 4. Pins and how to can be found online, just google it.Step3. Once you are connected, you need pre-flash using UART serial.Step4. After pre-flashing is done, AP is listening for a 192.168.1.1 TFTP device from where to download rest …
I’m familiar to use dynamic routing and not static routing. All tutorials are with static routing where wireguard is included. First i tried to add the routing and then disable the routing in the same command. Like this: PostUp = ip route delete 192.168.5.0/24 dev wg0; ip route delete 192.168.6.0/24 dev wg0PostDown = sleep 2 Then i found a way to disable the complete manual routing with this syntax in the wireguard config file. Table = off Source.
https://www.youtube.com/watch?v=emjoM-8zGdo
It looks like that after couple of days of testing wireguard through vyos and using BGP for dynamic routing, i have issue with some routes learned. Actually i discovered that this is a bug of vyos with wireguard. Routes are actually learned but are marked neighbor is marked as inactive and routers are not saved in the kernel routing tables.Routers are there but not there. Currently there is bug opened at vyos that should be fixed in the next version …
From time to time in my daily job i need very fast console access remotely to some network switches. This is not easy all the time.Digging around i found a solution using minicom as a linux application but when you would like to use all 4 USB ports and you need to connect to multiple switches, this is a challenge. Then i found another application called ser2net but the problem was related to USB RS232 adaptors. If you change USB …
Zerotier it was a great solution for all VPN locations until i found out the performance of Wireguard.Installation of Wireguard to Synology looks like was not that easy i was expected (just upload the app). After i found a github guy who explain how to compile the application from docker i had the chance to test the performance.Installation steps:1. Install docker and gitserver2. Commands to to compile in /root git clone https://github.com/runfalk/synology-wireguard.gitcd synology-wireguard/ docker build -t synobuild .docker run --rm …
Topology First of all, let’s specify some internet links to make an idea of maximum throughput performance:Timisoara -> 1000 Mbps down / 500 Mbps upArad -> 90 Mbps down / 90 Mbps upDeva -> 1000 Mbps down / 500 Mbps upOradea -> 1000 Mbps down / 500 Mbps upTimisoara, Oradea and Deva have the same provider and latency between are under 10ms and normally are 5ms.First tests were done between Timisoara and Deva.Hardware of Timisoara: VM machine with 4 cpu’s …
I asked myself how i can migrate SSD from the old one (120GB) to the new one (960GB) without vMotion and on a small ESXi 6.7 hardware. Found out to be pretty simple. Connect to ESXi 6.7 address webpage. Power off the VM you would like to migrate. Go to the datastore and copy/move the VM folder to the other storage location where you like to have it. Right click on the VM and unregister. Confirm. Go again to the …
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