Xen Server Switch Port is on Error Disable Mode
Our network environment is completely supported by Cisco switches from 2960, 4500, 3850 ,etc. Virtual environment is using Citrix Xen and Vmware products. Starting from a couple of months ago…
Sophos Update Error – Troubleshooting with Palo Alto Firewall
Our Sophos Management Server is installed behind a Palo Alto firewall, which is used to centrally update and manage all internal Sophos clients. After new installation of this Sophos Management…
Cisco ACI (Application Centric Infrastructure) Lab Test Drive
Summary: ACI is an open-source, centralized policy model that connects to all components of the data center and controls the network and information flow. ACI is a principle of action…
Check Point R80.10 Test Lab in Cloud (Azure)
Check Point and Microsoft has a test drive for R80.10 lab. The lab has been designed very well to understand Check Point architecture and features To summarize what I have…
Enable IDP on Juniper SRX Devices Managed by Juniper Space
An Intrusion Detection and Prevention (IDP) policy lets you selectively enforce various attack detection and prevention techniques on the network traffic passing through your SRX Series. The SRX Series offer…
Install and Configure Palo Alto VM in Vmware Workstation / ESXi
Palo Alto Networks has developed Virtualized Firewalls VM series to run in virtual environment. Here is the list for supported hypervisors from its website: The VM-Series supports the exact same…
Check Point 1100 SIP Configuration and Troubleshooting Dropped the packets due to “Violated Unidirectional Connection”
One request came up for a simple internet SIP connection to SIP provide Goldline. There are VoIP devices involved in this task, such as Cisco Router AS5350 and IP PBX,…
Cisco IOS Internet Key Exchange version 1 (IKEv1) Vulnerability and Fix
Cisco IKEv1 is still popular in VPN configuration. Most of my vpn configuration is based on IKE v1 although there are more demands for v2. I had a post “Cisco…
Cisco 3850 Mgmt VRF Configuration
Ethernet Management Interface VRF New Cisco Routers and Switches come with a dedicated Ethernet port which unique purpose is to provide management access to the device via SSH or Telnet.…
Juniper SRX Commnit Error “No rulebase configured for active policy”
I have been dealing with Juniper SRX IDP error many times when NSM was been used. Mostly those errors are caused by corrupted signature DB or not enough storage space…
Upgrade Cisco 4500 Switches IOS and ROMM and Failed to Enable VSS (Virtual Switching System)
In one of my clients environment, there are two Cisco 4510 running and HSRP has been configured. It has been discussed to upgrade it to VSS (Virtual Switching System) during…
Cisco Catalyst 3850 Data Stack and Power Stack
Received a bunch of boxes for Cisco 3850, which will be used to build a switch stack for high availability switching environment. For 2960 series, there is previous post about…