Category Archives: Uncategorized

Network Engineering Job Requirements

Usual Skills/Certs required for a Network Engineering Job: CCNA/CCNP/CCIE (RnS) (VLANs, HSRP, GLBP, NAT, ACLs, OSPF, EIGRP) Network+/Security+/Storage+ (SAN)/CCNA Sec(VPN, ASA)/Checkpoint Firewall/Juniper (JNCIA, JNCIS-ENT)/Palo Alto/CCNA DC (NX-OS, Nexus)/CCNA Collab (VoIP, QoS)/CCNA SP(MPLS, BGP, IOS-XR)/CCNA Wireless (IOS-XE, Aironet, Meraki, Aruba, Rukus, Aerohive)/Linux (Linux Essentials, LPIC1, LPIC2, Kali Linux)/Vmware/Hyper-V/MCSA (DHCP, DNS, AD)/Wireshark/CEH (Penetration testing)/ITIL/Prince2/CISSP/CCDA/GNS3/F5 load balancer/Netscaler/NMS ToolsContinue reading “Network Engineering Job Requirements”

How to Save Time by Using Snapshots in VirtualBox

Snapshots are a massive time saver when you are testing settings and configuration for your test labs. Read on to see how you can take advantage of them while following along with our articles. The basic idea of a snapshot is that you setup your virtual machine exactly how you want it, take a snapshot,Continue reading “How to Save Time by Using Snapshots in VirtualBox”

Windows Server 2012: Set Up your First Domain Controller (step-by-step)

Overview In Windows Server 2012, dcpromo has been deprecated.   Using Server Manager (UI): In order to make the windows server 2012 domain controller we will install ADDS (Active Directory Domain Services) role from the server manager on Windows Server 2012. All the Latest security updates must applied before installing the Role. First we willContinue reading “Windows Server 2012: Set Up your First Domain Controller (step-by-step)”

ASA Failover and Redundancy

The following must be identical: Model (5505 or 5510 or 5520, etc) Amount of RAM Number of Interfaces (should be the same type as well) External Modules (CSC-SSM or IPS-SSM) Activation key with the same features Failover mode Encryption Level Number of VPN peers *** Same size Flash is not required **** Definitions: Active -> ResponsibelContinue reading “ASA Failover and Redundancy”

Cisco ASA Firewall Active / Standby Failover

The Cisco ASA firewall is often an important device in the network. We use it for (remote access) VPNs, NAT/PAT, filtering and more. Since it’s such an important device it’s a good idea to have a second ASA in case the first one fails. The ASA supports active/standby failover which means one ASA becomes theContinue reading “Cisco ASA Firewall Active / Standby Failover”

Script to grab all the domain groups for a user on a Linux system with Active Directory connection

#!/bin/sh clear USIDTEMP=”/var/tmp/USIDstr.tmp” GSIDTEMP=”/var/tmp/GSIDstr.tmp” NAMETEMP=”/var/tmp/NAMEstr.tmp” #Reseting String storage veribles >$USIDTEMP >$GSIDTEMP >$NAMETEMP echo “command line to usergroup checker please supply the domain you wish to check” read DOM DOMAIN=$(echo $DOM | tr [a-z] [A-Z]) clear echo “What username do you wish to list groups for?” read USERNAME clear USERSID=$(WINBINDD_SOCKET_DIR=/var/samba/$DOMAIN/ wbinfo –name-to-sid=$USERNAME &> $USIDTEMP) echo “checkContinue reading “Script to grab all the domain groups for a user on a Linux system with Active Directory connection”

Common Linux Commands

#ping google.com #ping -I ethF 192.168.1.1 (from a particular source interface) #traceroute google.com #/sbin/ifconfig (all active network interfaces and some interface statistics)(add or change IP addresses) # ifconfig -a # ip addr #setup (to change the default interface or changing the interface IPs etc) #reboot #clear (to clear the screen) #ip neigh flush all (clearContinue reading “Common Linux Commands”

To add a route on the windows machine to force route the traffic through a particular gateway when two connections are connected on it

c:/>route ADD “network” MASK “subnet mask” “gateway ip” c:/>route ADD 8.8.8.8 MASK 255.255.255.0 192.168.1.12 or c:/>route ADD 10.10.10.0 MASK 255.255.255.0 192.168.1.12