GRE TUNNEL Without IPSEC

[Thomas Leong]

Hi Guys, May i know a GRE Tunnel without an IPSEC (Unsecure), if i use wireshark to capture, what can i get ? i mean what hacker can look/steal ?

[Rob Ingram · Accepted solution]

@Thomas Leong traffic encapsulated in a GRE tunnel (without IPSec) is unencrypted and unsecure. You can see the original traffic.

https://www.omnisecu.com/cisco-certified-network-associate-ccna/what-is-gre-generic-routing-encapsulation.php

To secure the communicate you would use with IPSec.

[Thomas Leong]

Okie thanks man ~

[Thomas Leong]

@Rob IngramWhat hacker can do with this things ? it looks nothing special ? sorry for my curious

[Rob Ingram · Accepted solution]

@Thomas Leong well that is only an example. If cleartext traffic such as telnet, http etc where encapsulated inside the GRE tunnel you'd see the data, the text typed and perhaps username/password information.

[Thomas Leong]

Hi @Rob Ingram 

Thanks Sir~ you are very helpful !