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How to bypass UDM Pro traffic blocking rule.

For context, my dad and I have had a friendly, ongoing feud for the past year where he restricts my internet/computer access after a certain time, and I figure out how to bypass whatever restriction he puts in place.

For example, I was initially able to change my MAC address and get around the restriction that way. After that stopped working, I was able to brute-force the second SSID on our network until he eventually removed it.

Now we are at the point where, from 11 PM to 6 AM, every device on our network loses internet access. The only "hint" I was given is to try using Kali Linux to figure out what is happening.

ChatGPT and I have come to the conclusion that it is likely a traffic-blocking rule on the UniFi. Below is a summary of what I have found so far:

  • ISP: Xfinity
  • Router: UniFi Dream Machine (UDM)
  • Kali: VirtualBox Bridged Adapter

  • Internet shuts off network-wide around 11 PM–6 AM.

  • LAN and router access remain functional.

  • DNS works, but direct internet traffic fails.

  • Traceroute stops at the local gateway.

  • tcpdump shows outgoing packets but no internet replies.

  • Windows, Kali, and VPN connections are all affected.

  • A phone hotspot restores internet access.

  • No usable alternate gateway, proxy, or tunnel was found.

  • IPv6 is unavailable.

  • MAC address changes do not bypass the restriction.

  • Several router/network-device ports were accessible from the LAN.

  • No usable internet proxy was found.

  • Several LAN devices were investigated, including a QNAP NAS and Ubiquiti network equipment, but no alternate internet path was identified.

Source: r/HowToHack · by /u/PrestigiousInternet1

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