cjaiwenwen

24 Flips | 1 Magazine | 4 Following | @cjaiwenwen | Network and System speicialist with 10 years experience

AWS interaction through Boto3

AWS (Amazon Web Services) support SAML authentication that could point back to individual customer through LDAP federation which is currently what we …

ELK with Singapore LTA data

Nowadays there is a lot of open-source software available on the market that makes IT administrator life easier, today i would like share some about …

Testing on DMVPN Phase 3 (OSPF)

I have been testing DMVPN Phase3 for several days, just to share some points i have learned.<p>Let’s re-cap what’s the 3 phases and how does DMVPN …

Script for data analysis

Months ago, there are several brute-force attack attacks happening target our internet facing routers and it cause some problems.<p>Some background of …

Script to Auto-Archiving and Alerting

Have gotten a requirement for auto-archive the file more than 7 days and alert the user whose file is going to be archived. Let’s build the logic …

Interact Cisco API through OAuth2.0

Sometimes didn’t update my blog, really kind of busy in the new role. There is requirement to setup an automate system for vulnerability alert …

How to check Active Directory Availability

Patches and enhancement always raises after a problem. So our problem is sometimes user are failed to access the file-share and failed to connect to …

Batch Disable SSLv2 and SSLv3 using Nitro

In my previous post i have shared that the Citrix Netscaler have a RESTful API that we could interact with through HTTP, Click To View. There are a …

Netscaler Nitro First Look

Before we start get into the code, I would like to talk a little bit about REST.<p>Now every Key player start to support REST, what actually it is and …

Script to present configuration change

In my previous post i have shared how to use ssh/telnet to backup your Cisco configurations. Today i would like to share a script to present the …

Script to monitor HTTP Service

I have encountered some issues with apache. The problem is that Apache service is up & running but somehow the HTTP is not functioning. So i wrote a …

7 Interview Questions For Measuring Emotional Intelligence

The traditional interview model helps you probe someone’s past experience, not their style of thinking.<p>Emotional intelligence involves self-awareness, self-regulation, motivation, empathy, and social skills. In other words, it’s a complicated amalgam that hiring managers have a hard time testing …

How to configure HP EVI ( Ethernet Virtual Interconnect)

There are topics that how we could extend layer2 over layer3 for DC interconnect. And there are various options to achieve this.<p>Option 1 and 2 is …

WLC Client Debug 802.1x

I have been using WIFI and supporting WIFI for a few years, never dig into the bottom to see what behind the scene when we are doing authentication. …

How to combine two mysql table using unique key

Months back when i trying to develop a portal to cater the load balancer requirement, i found that it’s impossible to incorporate the whole thing …

Script to Backup Cisco Configs (Telnet)

There are some legacy devices which still use telnet method could not use Paramiko to backup configurations. I wrote a separate script to achieve the …

Script to Backup Cisco Configs (SSH)

This is my first post and i will make it as a habbit<p>Coding is not my expertise, and this is my first time in touch with Python. There are numerous …

How to authenticate against LDAP using PHP

#Get the username/Password from user input<br>$ldapuser = ‘$id’;<br>$ldappass = ‘$pass’;<p>#Define the ldap server to authenticate against with<br>$ldapserver = …

Details in HAProxy+Keepalived Load-Balancer Setup Part 2

In the previous session Part 1 i have covered<p>In this session i would like to to share more about my considerations of configuration …

Details in HAProxy+Keepalived Load-Balancer Setup Part 1

There are a lot requirements to setup load-balancers in the different zones, we used to use Netscaler SDX to provision, but with SDX 11515 the …

Create your own Network Traffic Analysis with NFDump

We all know that there are a lot of commercial tools available to get the Network Traffic Analysis, for example Solarwinds and iMC which it will cost …