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[5 Mins Docker] Deploy Nexterm (open-source server management software) to Manage Cloud Servers Enable Sandbox / Hyper-V Feature on Windows 10 / 11 Home Edition CEHv13 Notes – Module 03: Scanning Netowrks Lab Free Online VPN Services (Proton VPN, Privadovpn, Windscribe) CEHv13 Notes – Module 04: Enumeration Lab
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Juniper

Configure a RMA-ed SRX340 with a JunOS Upgrade and Joining it into a Existing Cluster

2018-02-22 Jon

My previous post (Juniper SRX DB mode (Debug mode)) described a situation which is one of firewall cluster members got stuck into DB mode. Although it was fixed eventually by…

Cisco

Xen Server Switch Port is on Error Disable Mode

2018-02-12 Jon

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…

Palo Alto

Sophos Update Error – Troubleshooting with Palo Alto Firewall

2018-02-12 Jon

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

Cisco ACI (Application Centric Infrastructure) Lab Test Drive

2018-02-01 Jon

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…

Checkpoint

Check Point R80.10 Test Lab in Cloud (Azure)

2018-02-01 Jon

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…

Juniper

Enable IDP on Juniper SRX Devices Managed by Juniper Space

2018-01-27 Jon

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…

Palo Alto

Install and Configure Palo Alto VM in Vmware Workstation / ESXi

2018-01-27 Jon

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…

Checkpoint

Check Point 1100 SIP Configuration and Troubleshooting Dropped the packets due to “Violated Unidirectional Connection”

2018-01-27 Jon

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,…

Security

Cisco IOS Internet Key Exchange version 1 (IKEv1) Vulnerability and Fix

2017-12-09 Jon

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

Cisco 3850 Mgmt VRF Configuration

2017-11-26 Jon

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

Juniper SRX Commnit Error “No rulebase configured for active policy”

2017-11-26 Jon

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…

Cisco

Upgrade Cisco 4500 Switches IOS and ROMM and Failed to Enable VSS (Virtual Switching System)

2017-11-26 Jon

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…

Posts pagination

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