Jordan's Cisco Blog: Capturing Packets from a Cisco Router for Wireshar...

Jordan's Cisco Blog: Capturing Packets from a Cisco Router for Wireshar...: In case you wish to troubleshoot issues and view specific packet flow traversing your routers, you will need a tftp server setup so that you...

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Configuración de Hairpin NAT (VIP)

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 Thank to: https://fortixpert.blogspot.com/ Este artículo describe cómo configurar FortiGate para Hairpin con el uso de set match-vip y match-vip-only. En este escenario, tanto el PC como el Servidor están detrás de FortiGate y el PC quiere conectarse al Servidor apuntando a su dirección externa (92.0.2.10) en lugar de la real (10.10.10.10). Esto se llama Hairpin NAT. Solución : La solución dependerá de cómo sea el objeto IP Virtual (VIP). Solución 1 : La interfaz externa en el VIP está configurada a una interfaz particular (en este caso a wan1) #config firewall vip     edit "VIP"         set extip 92.0.2.10         set extintf 'wan1'         set mappedip 10.10.10.10     next end Nota: En este escenario, la IP externa VIP puede ser la misma que la IP de la interfaz (es decir, 92.0.2.2) Se necesitan dos políticas: 1) Una política de entrada con ...
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PNETLab installation / adding Huawei AR Router Image

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 Thank to: https://forum.huawei.com/ I would like to share with you how to install PNETLab ( Packet Network Emulator Tool Lab ) and how to add Huawei AR / USG.  1- Go to https://pnetlab.com/ 2- Then Click on Dowload Tab, Select the OVA file from one of the available 3 links, the file size is 2GBytes. "The latest version available until this post date is  4.2.10 " 3- Once the download completed, add the ova file to your VMware player, VirtualBox, or VMware Workstation Pro for my case I am using VMware Workstation Pro: 4- Follow the usual steps of adding any VM like Network adapter setting / Hardware resources RAM/CPU, once completed you should get a screen like this below: 5- Use any SSH software " I recommend SecureCRT" to connect to the server using the IP shown in Step.4 For my case it is  192.168.5.129 .  Note that the SSH Credentials for PNETLab server is Username:  root  /Pass:  pnet Click OK to access: 6- Now there are co...
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Metadata Cleanup Using NTDSUTIL in Windows Server 2008 R2

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Thank to: http://www.msserverpro.com This process of removing data in AD DS is known as Metadata Cleanup. NTDSUTIL is used to clean up domain controller metadata. If a domain controller that is damaged and cannot be started from Active Directory service, we can then use NTDSUTIL to clean out the unsuccessful domain controller demotion, and it is very important that you do so. This will solve problems with slow login in domain controller, replication as well as knowledge Consistency Checker (KCC). Here, KTM-DC01-2K8.msserverpro.com server is a failed domain controller , which we want to remove. To do this, we will use the NTDSUTIL command line tool. Follow these steps to clean up the directory from a failed domain controller: 1. Open a command prompt, type ntdsutil and press Enter. 2. At the Ntdsutil prompt, type metadata cleanup and press Enter. 3. At the Metadata Cleanup prompt type connections and press Enter. 4. At the Server Connections prompt, type ...
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