An Alma Linux laptop has a Lan adapter enp0s31f6 and a Wifi adapter wlp0s20f3. The Wifi adapter is connected to a WLAN router (Fritz-Box) via DHCP, has the IP address 192.168.78.156 and allows access to the Internet. The standard gateway of the WLAN router is 192.168.78.1. The LAN adapter enp0s31f6…

Good Morning Jukka, thank you very much for your great support. With your hints I solved my problem. 1. set ip forward sudo sysctl -w net.ipv4.ip_forward=1 2. change zone sudo firewall-cmd --zone=external --change-interface=enp0s31f6 3. activate forwarding sudo firewall-cmd --zone=public --add-f…

First, which version of Alma, 8 or 9? (Although, it should not matter.) There is no “iptables” in Alma. Not by default. The kernel has nf_tables that has taken over from netfilter. You can see all the current rules in the kernel with: sudo nft list ruleset There is still command “iptables”, but …

Hello jlehtone, thank you very much for your hints. It was my mistake simply to transfer the iptable rules from my Ubuntu system. I use the newest AlmaLinux 9.4 Version. I find, that firewalld is running on the system as default. Both network adapters are running in the public zone, were masqueradin…

Hello Jukka, to forward traffic from 192.168.1.0/24 to the Fritzbox I try the following things: 1.) sudo sysctl net.ipv4.ip_forward=1 2.) sudo firewall-cmd --get-active-zones both interfaces are in the public zone. (fort test-purposes I dont use the option --permanent 3.) sudo firewall-cmd -…

Do remember that you want: Members of LAN can access something in this server Members of LAN can access anything in WLAN Members of WLAN can access something in this server Members of WLAN can access nothing in LAN Therefore, members of LAN should have different rules than members of WLAN. In Fir…

Hallo Jukka, thank you very much for your patience. A short introductory remark. From my subnet I need connections to public time server, dns server like 8.8.8.8 and to AlmaLinux repositories. With Ubuntu 22.04 I could do this. Now, using AlmaLinux, it’s tricky for me. To use both network adapte…

[image] caoti: To use both network adapters (Lan adapter enp0s31f6 and a Wifi adapter wlp0s20f3) I have to start enp0s31f6 with the network manager manually. If I do so, I can’t ping adresses like 8.8.8.8 via WLAN, but access different websites. To ping 8.8.8.8 successful I have to stop enp0s3…

With both adapters running $ ip ro default via 192.168.1.40 dev enp0s31f6 proto static metric 100 default via 192.168.178.1 dev wlp0s20f3 proto dhcp src 192.168.178.159 metric 600 192.168.1.0/24 dev enp0s31f6 proto kernel scope link src 192.168.1.40 metric 100 192.168.1.0/24 via 192.168.178.1 d…

I had an similar side effect with AlmaLinux Systems in VirtualBox Machines. [image] VirtualBox AlmaLinux 9 second network adapter not working Support Hi there, I am trying to run AlmaLinux 9 in a Virtualbox VM on a Mac. I added two network interfaces, one NAT interface fo…

[image] caoti: default via 192.168.1.40 dev enp0s31f6 proto static metric 100 This one says that packets to 8.8.8.8 should be tossed out from enp0s31f6. Remove the “gateway” from the enp0s31f6’s config; it is nonsense. This machine should have three logical destinations: LAN (192.168.1.0/24)…

Internet Access LAN-Subnet -> Laptop with LAN and WLAN Adapter -> Fritzbox ->Internet

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caoti September 17, 2024, 11:49am 9

I had an similar side effect with AlmaLinux Systems in VirtualBox Machines.