Get Some Tunnel Vision!

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Pull back the curtain, turn on the light, put on your x-ray vision goggles and inspect the traffic passing through your cleartext tunnels (GRE, non-encrypted IPSec, or GTP-U tunnels). You want tunnel vision!

You can’t protect against things you can’t see, including sessions tunneled through the firewall. If sessions are tunneled in a protocol such as GRE, without Tunnel Content Inspection you’ll simply see the traffic as GRE and not see the individual applications (or who the source is) within GRE. If tunnel protocols are allowed to go through the firewall, users can avoid full exposure to the firewall and access sites such as proxy-avoidance websites to surf prohibited content or do file transfers.

Tunnel content inspection provides visibility so that you can enforce policy. For example, block packets that contain unknown protocols. Enforce your corporate security and usage policies on tunneled packets.

As the enforcer holding the gavel, you can apply different security rules to the tunnel content versus the rules applied to the inside content. This flexibility helps, for example, when you have separate entities tunneling their traffic and you want to enforce different overarching security policies.

Tag the traffic that is subject to Tunnel Inspection policies so you can use logs and reports to gain full visibility into the traffic.

Don’t let your tunneled traffic go unchecked! Check out Tunnel Content Inspection in PAN-OS 8.0 and later releases.

The post Get Some Tunnel Vision! appeared first on Palo Alto Networks Blog.

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Palo Alto Networks is the next-generation security company maintaining trust in the digital age by helping tens of thousands of organizations worldwide prevent cyber breaches. With our deep cybersecurity expertise, commitment to innovation, and game-changing Next-Generation Security Platform, customers can confidently pursue a digital-first strategy and embark on new technology initiatives, such as cloud and mobility. This kind of thinking and know-how helps customer organizations grow their business and empower employees all while maintaining complete visibility and the control needed to protect their critical control systems and most valued data assets. Our platform was built from the ground up for breach prevention, with threat information shared across security functions system-wide, and designed to operate in increasingly mobile, modern networks. By combining network, cloud and endpoint security with advanced threat intelligence in a natively integrated security platform, we safely enable all applications and deliver highly automated, preventive protection against cyberthreats at all stages in the attack lifecycle without compromising performance. Customers benefit from superior security to what legacy or point products provide and realize a better total cost of ownership.
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