LinuxQuestions.org
Go Job Hunting at the LQ Job Marketplace
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Security
User Name
Password
Linux - Security This forum is for all security related questions.
Questions, tips, system compromises, firewalls, etc. are all included here.

Notices

Reply
 
Search this Thread
Old 08-07-2007, 02:16 PM   #1
metallica1973
Senior Member
 
Registered: Feb 2003
Location: Washington D.C
Posts: 2,115

Rep: Reputation: 58
S/MIME and using SSL or TLS or use PGP


I am concerned about security in connecting to external e-mail using POP3. I have several clients that use e-mail and have notice that there are several security methods for securing e-mail such as S/MIME using TLS and SSL when connecting to mail servers (to and from). Which is preferred, connecting using S/MIME methods(using PKCS #7,TLS or SSL)using PGP using symetric or asymetric keys. I am a bit confused on the differnce between S/MIME using SSL or TLS or using PGP and using symetric or asymetric keys as well? What is the more secure way of securing e-mail either by connecting using S/MIME and using SSL or TLS or PGP and by selecting certain clients and exchanging keys? That would be tedious!

Last edited by metallica1973; 08-07-2007 at 02:25 PM.
 
Old 08-09-2007, 11:20 AM   #2
unSpawn
Moderator
 
Registered: May 2001
Posts: 27,485
Blog Entries: 54

Rep: Reputation: 2902Reputation: 2902Reputation: 2902Reputation: 2902Reputation: 2902Reputation: 2902Reputation: 2902Reputation: 2902Reputation: 2902Reputation: 2902Reputation: 2902
If you want to make sure any "talk" between host A and the receiving SMTP host B remains between A and B you would use TLS (prev.: SSL). Separate and unrelated issue: if your message is to be read only by the recipient, and you want the recipient to be able to ascertain the message came from you, then you would use PGP. Now if you are always online, and if you would want to pay money for a commercial cert and if you would want to be able to fool people in thinking you sent a message, you could use S/MIME :-]
 
Old 08-11-2007, 12:42 PM   #3
metallica1973
Senior Member
 
Registered: Feb 2003
Location: Washington D.C
Posts: 2,115

Original Poster
Rep: Reputation: 58
Can you elaborate on S/MIME?
 
Old 08-13-2007, 07:49 PM   #5
metallica1973
Senior Member
 
Registered: Feb 2003
Location: Washington D.C
Posts: 2,115

Original Poster
Rep: Reputation: 58
So after reading about SMIME and TLS I really dont see the difference!. With both you are using private and public keys(asymmetric encryption). Is all of this communication done through a tunnel like a VPN or is all the security just done through keys and subject to interception?

Last edited by metallica1973; 08-13-2007 at 07:51 PM.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
PGP/MIME vs Clearsigning - What's the practical difference? rignes Linux - Security 4 11-12-2006 09:22 PM
Using Aegypten PGP/Mime Email in Mandrake kwalker Linux - Security 1 07-12-2004 02:38 AM
PGP/Mime for MDK Kmail - Agypten kwalker Linux - Software 0 07-02-2004 01:53 AM
SSL vs. TLS X11 Linux - Security 8 12-17-2002 03:39 PM
PGP/MIME for windows Ztyx General 4 09-19-2002 08:39 PM


All times are GMT -5. The time now is 07:38 AM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration