🦈 Most People Open Wireshark... Then Get Lost.
Master the essential display filters and analyze network traffic like a cybersecurity professional. 🔍
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SD-WAN has quietly become one of the most important technologies in modern networking.
Instead of relying on a single expensive MPLS link, SD-WAN intelligently routes traffic across MPLS, broadband, 4G/5G, and cloud connections based on application performance and business needs.
Some of the biggest players in the space include Cisco, VMware VeloCloud, Fortinet, Palo Alto, Versa, Silver Peak, and Juniper.
The goal is the same:
✅ Better application performance
✅ Lower WAN costs
✅ Centralized management
✅ Stronger security
✅ Reliable connectivity for branch offices and remote users
As more businesses move workloads to the cloud, SD-WAN is no longer just a networking upgrade—it's becoming the foundation for modern enterprise connectivity.
Wireshark Features & Filters (Educational Use Only)
Wireshark is a packet analyzer used by network administrators, IT professionals, students, and security researchers to troubleshoot networks and understand how protocols work.
Common Packet Analysis
tcp → Shows only TCP traffic.
udp → Shows only UDP traffic.
icmp → Displays ICMP packets (ping traffic).
dns → Filters DNS queries and responses.
http → Shows HTTP web traffic.
https → Displays TLS/SSL encrypted connections.
IP & Host Filtering
ip.addr == 192.168.1.10 → Shows traffic to or from a specific IP.
ip.src == 192.168.1.10 → Shows packets sent by an IP.
ip.dst == 192.168.1.10 → Shows packets sent to an IP.
eth.addr == AA:BB:CC:DD:EE:FF → Filters a specific MAC address.
Port-Based Analysis
tcp.port == 80 → Shows HTTP traffic.
tcp.port == 443 → Shows HTTPS traffic.
udp.port == 53 → Shows DNS traffic.
tcp.port == 22 → Shows SSH traffic.
Troubleshooting Filters
tcp.flags.syn == 1 → Displays TCP connection attempts.
tcp.flags.reset == 1 → Shows connection resets.
tcp.analysis.retransmission → Finds retransmitted packets.
tcp.analysis.lost_segment → Detects missing TCP segments.
tcp.analysis.duplicate_ack → Shows duplicate acknowledgments.
Protocol Analysis
arp → Displays ARP traffic.
dhcp → Shows DHCP requests and responses.
tls → Analyzes encrypted TLS sessions.
ftp → Shows FTP traffic.
smtp → Displays email-related traffic.
Useful Statistics & Features
Follow TCP Stream → Reconstructs an entire TCP conversation.
Follow UDP Stream → Displays a complete UDP exchange.
Protocol Hierarchy → Shows traffic distribution by protocol.
Conversations → Identifies hosts communicating with each other.
Endpoints → Lists all discovered devices.
I/O Graphs → Visualizes network activity over time.
Capture Filters
host 192.168.1.10 → Capture traffic for a specific host.
port 80 → Capture traffic on port 80.
tcp → Capture only TCP traffic.
udp → Capture only UDP traffic.
net 192.168.1.0/24 → Capture traffic from a subnet.
Note
These filters and features are intended for network troubleshooting, protocol analysis, education, and authorized security testing. Always analyze traffic on networks and systems you own or have explicit permission to monitor.