P. P. Stemmer Imaging
R. R. Stemmer Imaging
Advanced TCP/IP training course contents
- Fragmentation and MTU issues, Path MTU discovery, Geolocation, unusual IP addresses, forwarding broadcasts, DiffServ, DSCP, ECN, assured and expedited forwarding. TTL usage in traceroute, Protocol field. Sanitising IP addresses in trace files. Wireshark and checksum errors.
- The header. Extension headers. Traffic class and flow labels. Tunnelling. IPv6 and fragmentation.
- Requests, responses, gratuitous ARP, Proxy ARP, ARP poisoning.
- ping, Round Trip Times, ICMP redirect, ICMP router advertisement and solicitation, Time Exceeded, Destination unreachable. ICMPv6: Similarity to ICMPv4, Neighbor discovery and the replacement of ARP. MLD.
- First hop redundancy
- ICMP discovery, HSRP, VRRP, GLBP.
- Multicast overview, multicast architecture, multicast addresses, IGMP v1, IGMPv2, IGMPv3
- Use in broadcasts and multicasts. Port numbers.
- Connections, RST, FIN, sequence numbering, packet loss recovery, Fast recovery, RTO timeout, SACK, TCP flow control, receive window, congestion window, van Jacobsen, nagle, delayed ACKs, PSH, URG, TCP options, MSS, Window scaling, TCP timestamps. Congestion notification. Hands on: Troubleshooting with sequence numbers, Wireshark IO and TCP graphs to analyse performance. Window size issues.
- DHCP header. Relationship to BOOTP. Discover, offer, request, decline, ACK, release. Lease, renewal and rebind times. Relay agents. DHCPv6
- Names and addresses, Resource Records, queries, responses, problems. MDNS
- Requests, methods, request modifiers, response codes. HTTPS. SSL, TLS. Proxies. Hands on: Redirects, recreating pages from packets.
- Commands, responses, passive/active mode.
- SMTP, POP3, IMAP, commands responses.
- Voice and Video
- RTP, RTCP, SIP. IP PBXs. Traffic flows. Hands on: Voice playback.
- MIBs, GET, TRAP, polling.
- Baselining, high latency, Wireshark and timings, packet loss, redirections, small packets, congestion, name resolution
- Network forensics, scanning and discovery, suspect traffic. IPsec, SSH.
Why Choose Us
SNT trainers score an average of over 90% on the three main areas of:
- Ability to teach
- Technical knowledge
- Answering questions
We limit our maximum class size to 8 delegates; often we have less than this. This ensures optimal interactivity between delegates and instructor.
"Excellent course. The small class size was a great benefit…" M.B. IBM
We write our own courses; courseware does not just consist of slides and our slides are diagrams not bullet point text. A typical chapter provides clearly defined objectives with a chapter overview, slides with text underneath, a quiz at the end to check the learning of the students. Hands on exercises are at the end and are used to reinforce the theory.