Exam (elaborations)
CEH V10 Scanning and Enumeration | Questions And Answers Latest {} A+ Graded | 100% Verified
- Module
- Institution
CEH V10 Scanning and Enumeration | Questions And Answers Latest {} A+ Graded | 100% Verified
[Show more]
Seller
Follow
oneclass
Reviews received
Content preview
CEH V10 Scanning and Enumeration | Questions And Answers Latest {2024- 2025} A+Graded | 100% Verified
Scanning Defintion - discovering systems on the network and looking at what ports are open as well as
applications that may be running
Connectionless Communication - UDP packets are sent without creating a connection. Examples are
TFTP, DNS (lookups only) and DHCP
Connection-Oriented Communication - TCP packets require a connection due to the size of the data
being transmitted and to ensure deliverability
TCP Flags - -total of 8 bits for 8 flags
SYN (Synchronize) Set during initial communication. Negotiating of parameters and sequence numbers
ACK (Acknowledgment) Set as an acknowledgement to the SYN flag. Always set after initial SYN
RST (Reset) Forces the termination of a connection (in both directions)
FIN (Finish) Ordered close to communications
PSH (Push) Forces the delivery of data without concern for buffering
URG (Urgent) Data inside is being sent out of band. Example is cancelling a message
TCP Handshake - SYN -> SYN-ACK - ACK
The protocol by which a client and server machine establish communication for the transfer of data.
Internet Assigned Numbers Authority (IANA) - maintains Service Name and Transport Protocol Port
Number Registry which lists all port number reservations
Port Number Ranges - Well-known ports - 0 - 1023
Registered ports - 1024 - 49,151
Dynamic ports - 49,152 - 65,535
, Port 20/21 - FTP File Transfer Protocol (TCP/UDP) 21(SCTP)
Port 22 - SSH TCP
Port 23 - TCP Telnet
Port 25 - SMTP (Simple Mail Transfer Protocol)- TCP
Port 53 - DNS TCP/UDP
Port 67 - DHCP UDP
Port 69 - TFTP UDP
Port 80 - HTTP TCP
Port 110 - POP3 TCP
Port 135 - Remote Procedure Call (RPC) TCP
Port 137-139 - NetBIOS
(TCP / UDP)
Port 143 - IMAP TCP
Port 161/162 - SNMP (Simple Network Management Protocol) UDP
Port 389 - LDAP (Lightweight Directory Access Protocol) TCP/UDP
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller oneclass. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £10.95. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79202 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now
Recently viewed by you
