Verify your email security with tcpdump

Wednesday, 1 October 2008, 9:54 PM EST

I confess, I'm an outlaw at heart. I like using packet sniffers like tcpdump because it satisfies my base snooping impulses. Packet-sniffing is wiretapping after all, only it's applied to TCP/IP packets, not voice transmissions. Sure, they're my packets on my systems, but still the idea is appealing. Even more appealing is knowing I have the ability to monitor incoming and outgoing traffic, and knowing exactly what's going on.

For example, being an untrusting soul as all wise network administrators are, I can use tcpdump to verify that encryption is working. Here is what a plain unencrypted POP mail session looks like. This is an abbreviated example showing only the initial three-way TCP handshake.

At LinuxPlanet.

[ Read more ]




Spotlight

Planning for the Internet of Things

As organizations plan for the future, and how security has to operate within their business, they now have to worry about the IoT. Geoff Webb, Director of Solution Strategy at NetIQ, discusses the implications and likely impact of the Internet of Things.


Weekly newsletter

Reading our newsletter every Monday will keep you up-to-date with security news.
  



Daily digest

Receive a daily digest of the latest security news.
  
DON'T
MISS

Mon, Apr 27th
    COPYRIGHT 1998-2015 BY HELP NET SECURITY.   // READ OUR PRIVACY POLICY // ABOUT US // ADVERTISE //