Default rules (which is a bit better then your current rule set): /ip firewall filter add chain=input action=accept connection-state=established,related,untracked comment="defconf: accept established,related,untracked" add chain=input action=drop connection-state=invalid comment="def...

Check if you have the dns port exposed to the internet or maybe you have something inside your network doing lots of dns requests. if not, create a firewall rule on input chain, udp port 53, source interface (your wan) action deny you are also running a 3y old rOS version, update to the latest v6 a...

Hello I have 100% CPU usage almost always This is my router: routerboard: yes model: 751U-2HnD serial-number: 46ED02E1EDC3 firmware-type: ar7240 factory-firmware: 3.02 current-firmware: 3.02 upgrade-firmware: 6.46.2 Router resources are: uptime: 32m8s version: 6.46.2 (stable) build-time: Jan/14/2020...

The scheme isn't complete, it doesn't show switches. Did you configure vlans also on them? Use tagging or not on proper ports? I did not, you are right But the switches I use are kind of dumb devices, what were called "hubs" I don't know if VLANs are the right solution for my problem What...

Using VLAN ID 1 is unwise unless you really know what you are doing, many vendors reserve VLAN ID 1 for untagged traffic. So you are configuring the network drivers on the PCs to use VLAN IDs 1 and 2? I don't configure the PCs drivers. Just plain DHCP Don't know how to do that Is it necessary? Than...

Please refer to the scheme I have attached in a previous post. I want the Vlan-2 to be a subnet for the Accounting department, and to be separated from the rest of the company, which is connected to the Vlan-1 If the subnet Vlan-2 could be physically conected to one of the router's hardware interfac...

I tried that option too, but didnt work
Of course associating the DHCP-Server with the VLAN interface instead of relaying is more straighforward

Thanks

Thank you for your response. This is the configuration: # aug/17/2023 15:59:19 by RouterOS 6.46.2 # software id = REA1-QLCC # # model = 751U-2HnD # serial number = 46ED02E1EDC3 /interface wireless set [ find default-name=wlan1 ] ssid=MikroTik /interface ethernet set [ find default-name=ether1 ] mac-...

Hello everyone, I am new to MikroTik, and have basic networks know-how I have tried to reproduce the example from the manual https://wiki.mikrotik.com/wiki/Manual:IP/DHCP_Relay but instead of one router as DHCP-Relay and another as DHCP-Server, the two networks conected to the DHCP-Relay are two VLA...