Mohammad Shaidur Rahman

*IT security consultancy is based on my knowledge based & experienced . In experience I faced various type of attack was targeted ( from our client to our services) , the attack & methods were from network (data link to application layer) to Application vulnerability (specially application delivery platform).
* Detecting various type of threat through analysing network traffic (real time & not real time )
* Excellent in detecting various type of DoS & DDoS & take immediate mitigation so service will not effect.
* Pen testing for detecting flaws /vulnerability from network infrastructure to OS/application level.

* Deploy CDN distributed from Europe through east coast to west coast USA
*Deploy & implemented vmware based cloud hosting platform with 60-70% hardware assisted virtualization like Intel SR-IOV (for critical and sensitive VOIP/communication ), GPU virtualization with Nvidia GRID
*Deploy various type of fc /iscsi base san array from multi vendor in esxi environment
*Working with pure data center based CISCO Switching & Routing
* Implemented Vmware base service with NSX (Network Virtualization with Security Platform)


Operating systems Skill:

FreeBSD/RedHat/Centos/Debian etc covering operation/scripting/kernel or any application platform like web/dns/any service or system level customization.



Microsoft :

Server 2008/ 2012 /2016
Powershell scripting / core implementation / IIS / active directory etc deployment
Good Understanding on Group policy & its implementations.
Windows various client deployment from windows 7 to 10

Application Delivery / Load Balancer Skill:

F5 / Netscaler / Kemp and some open source system

During this time working with Cisco Saudi Arabia, Saudi Ericsson, HP Saudi, Nortel & conduct various official training program in Saudi & abroad.


DATA CENTER Experience:
During this time I have worked with various vendors expertise to implement 8 modern state of arts data center along with 3 disaster recovery center.
Type of Items used by data centers:
Type of node for IBM The Power® 755, IBM Power™ 575 with IBM AIX
Dell PowerEdge M910 blade
SAN & VSAN: Cisco MDS 9513 for IBM System Storage, IBM System Storage SAN768B
File management: General Parallel File System (GPFS)
Tivoli® Workload Scheduler LoadLeveler®, Extreme Cloud Administration Toolkit (xCAT).
Normal Server:
IBM e-series, i-series.HP-ProLiant series.Dell power series
Server OS: HP unix, Linux, freeBSD, Microsoft windows 2003 & windows 2000 server
Storage:HP storageWorks MSA2000 /DELL EMC
Networking Experience:
At present administering cluster of CISCO core Catalyst 6509-E with redundant engine 720, IDSLM-2.
With many distribution switches (CISCO 4500 series) and Access switch(3570-E series).
Number of Router in my administration are, among them cisco 2801, 2811, 3845, Juniper M&J series routers.
Firewall, IDS & NAC:ASA5020, juniper netscreen.CISCO NAC
Experienced in implemented with various types Vlan & PVLAN from core to access layer
Experienced in optimize full switching environment
Experience in troubleshooting various switching issue like stp loop, security etc
Gateway load balancing with GLBP .
Management Software :CISCOWORKS, CISCO ACS, MRTG etc
Remote site are 16
MPLS clouds total 4, 3 STC clouds &1 Ministry of defense Clouds .
Internal routing protocols used OSPF
External Protocols BGP for MPLS vrf
For our clouds MP-BGP