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As you have probably noticed, is it not easy anymore with a standard firewall to block these kinds of applications. A few years a new trend has been launched so that most appliacations will pass port 80 (http) or 443 (https) . A good example for this is skype. In 2010 you could block the Skype service by blocking a port on your firewall. Now these days skype works on port 443 (Https). So with a regular firewall you can't see iif the HTTPS legimate or not.

You have newer firewalls ( brands like Palo Alto, Juniper Networks, Barracuda Networks, ...) who have build a new kind of firewall (they call it the next generation firewall). It gives you the possibilty to define traffic and create policies for these kind of traffic depending on your LDAP structure.

Conclusion:

  • If you have a standard firewall: no
  • If you have a NG firewall: Yes
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12y ago

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