March 2018
Intermediate to advanced
626 pages
17h 32m
English
book
Network Analysis Using Wireshark 2 Cookbook - Second Edition
by Nagendra Kumar Nainar, Yoram Orzach, Yogesh Ramdoss
Content preview from Network Analysis Using Wireshark 2 Cookbook - Second Edition
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How it works...
In this section, let's look into the normal operation of different email protocols with the use of Wireshark.
Mail clients will mostly use POP3 for communication with the server. In some cases, they will use SMTP as well. IMAP4 is used when server manipulation is required, for example, when you need to see messages that exist on a remote server without downloading them to the client. Server to server communication is usually implemented by SMTP.
The difference between IMAP and POP is that in IMAP, the mail is always stored on the server. If you delete it, it will be unavailable from any other machine. In POP, deleting a downloaded email may or may not delete that email on the server.
In general, SMTP status codes are divided ...
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