Celal Dogan

Celal Dogan

Senior Network Engineer

at · 37 articles published

Proficient in System Administration, Python, Computer Network, Network Engineering, PHP, Web Testing, Penetration Testing, Wireshark, RADIUS, Cisco Router, TCP/IP, Kali Linux, OSPF, NPS, and Multiprotocol BGP.

Areas of expertise

Certifications & credentials

  • Check Point Certified Security Expert (CCSE) R81
  • Check Point Certified Security Administrator (CCSA)
  • Cisco Certified Internetwork Expert (CCIE) Routing and Switching – Written
  • Cisco Certified Network Associate (CCNA) Routing and Switching

Articles by Celal Dogan

How to do Log4j2 Vulnerability Analysis with Wireshark

In this article we will share step by step instructions to analyse and find log4j2 vulnerability using wireshark.

How to do TCP Retransmission Analysis using Wireshark

TCP retransmissions happen when there is packet loss or congestion, which causes high latency and low speed. TCP implements many methods to recover connections …

Understanding TCP Seq & Ack Numbers [Packet-by-Packet]

Reliability is one of TCPs strong feature. TCP ensures that all packets one end sends will be delivered to the other end, keeping track of which packets have

How to Trace IP Addresses Using Wireshark [Tutorial]

Step by step instructions to trace IP Addresses using Wireshark with practical examples

Measure bandwidth using Wireshark [Practical Examples]

We can use Wireshark I/O Graphs Window to measure bandwidth properly using wireshark. To find the process or application eating up the bandwidth we can use …

Breaking down HTTP response at Packet Level [Wireshark Tutorial]

Step by Step instructions to analyse HTTP response at packet level using wireshark.

Wireshark: Decrypt SSL/TLS Practical Examples [Tutorial]

Step by step instructions to understand all about SSL and TLS and next learn to decrypt SSL or TLS connection using Wireshark with practical examples