Websites are not working anymore

Since June 1st you may notice that some websites (https) are not working anymore when Fortigate or the Palo Alto Networks Firewall is doing decryption or certificate inspection. Typically you are getting one of the following error messages:  5,797 total views,  2 views today

 5,797 total views,  2 views today

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Re-Certification Policies during COVID19

Because it’s very difficult to take exams at PearsonVUE right now, you may get in trouble regarding the timely recertification of existing certifications. Therefore some vendors have announced an extension for their recertification expiration: PaloAltoNetworks is extending the certification expiration date by six month for Credential holders with expiration date between March 1,…

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New PSIRT-Advisory from Fortinet

Last week Fortinet has released a critical PSIRT-Advisory “Improper check for certificate revocation vulnerability” Unfortunately the article does not give exact information regarding the background or the solution and we couldn’t find further information about the issue, either. Maybe you have more information?

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Basic Stuff: MTU-Grösse mit ping testen

Die MTU ist immer wieder ein Thema beim Troubleshooten von Netzwerkproblemen. Oft herrscht jedoch Unklarheit darüber wie man die genaue MTU zwischen zwei Endpunkten herausfinden kann. Natürlich ist der “ping”-Befehl hier das Mittel der Wahl, aber mit welcher Ping-Grösse habe ich welche MTU?

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