Author: dhutten

  • Filtering (BGP) routes

    Last time setup some IPsec S2S connections between multiple Fortigate firewalls and of course running BGP between them. In short: Hub site must know all routes from Spokes. But only transport 192.168.1.0/24 via BGP. Spoke A (IP 192.168.254.2)must know only the route to the Hub– Default route will remain on spoke location Spoke B (IP […]

  • FortiNet CLI Cheat Sheet

    The following table lists show / diag/ update/ config commands for FortiGate, which can be handy. Will update this list once in a while Command What does it do? config system arp-table Add static ARP entries config system interface Show all NIC’s config router prefix-list Add a prefix-listType show, to see current prefix-lists. config router […]

  • Exchange Hybrid – Free/Busy information not working

    When upgrading an SSL cert last week i had to run the Exchange Hybrid Configuration Wizard again. Of course when you update something like this or the AD Connect something is broken…. Before the Free/Busy was working from Microsoft 365 Exchange Online to the On-Prem environment. After checking the relationship i saw that the sharing […]

  • Converting SSL certicates

    Often when we you buy / get a new certificate you need to have another certificate depending on your needs. PEM Format The PEM format is the most common format that CA’s issue certificates in. PEM certificates usually have extentions such as .pem, .crt, .cer, and .key. They are Base64 encoded ASCII files and contain […]

  • Policy Based Routing HPE Aruba 3800 series

    Today busy with some Policy Based Routing (PBR) routing on an HPE Aruba 3800 series switch. Situation: The default gateway is set to 172.16.1.1 which is ISP A a line dedicated for business traffic. So in the config of the switch ip route 0.0.0.0 0.0.0.0 172.16.1.1 ip routing Let’s assume that we have another ISP, […]