Linux with 2 interfaces, select default outbound for devices in same lan
I've got this situation:
- router1 192.168.1.1
- PC1 Linux with DHCP cable 192.168.1.3
- router2 DHCP cable 192.168.1.2 and static 192.168.2.1
- PC2 Linux with DHCP cable 192.168.2.2 and DHCP WiFi 192.168.1.4
- router1 is the main router providing Ethernet and WiFi
- pc1 is connected to router1 with a cable
- router2 is connected to router1 with a cable and has a second DHCP server on a second interface
- pc2 is connected to router1 via WiFi and to router2 with a cable
I've setup all routing tables so that hosts can communicate with eachother and also pc2 goes on internet via router2.
The problem I have is that when pc2 communicates with pc1, it does it over the WiFi.
Is there a way to force all outbound traffic from pc2 to go out via the Ethernet interface and use the WiFi only to receive and reply?
Thanks
linux networking wireless-networking router
asked Dec 25 '18 at 2:51
SycoSyco
18612
add a comment |
I've got this situation:
- router1 192.168.1.1
- PC1 Linux with DHCP cable 192.168.1.3
- router2 DHCP cable 192.168.1.2 and static 192.168.2.1
- PC2 Linux with DHCP cable 192.168.2.2 and DHCP WiFi 192.168.1.4
- router1 is the main router providing Ethernet and WiFi
- pc1 is connected to router1 with a cable
- router2 is connected to router1 with a cable and has a second DHCP server on a second interface
- pc2 is connected to router1 via WiFi and to router2 with a cable
I've setup all routing tables so that hosts can communicate with eachother and also pc2 goes on internet via router2.
The problem I have is that when pc2 communicates with pc1, it does it over the WiFi.
Is there a way to force all outbound traffic from pc2 to go out via the Ethernet interface and use the WiFi only to receive and reply?
Thanks
linux networking wireless-networking router
asked Dec 25 '18 at 2:51
SycoSyco
18612
On PC2, you'll have to use policy routing (google), change the priority of local routes (ip rules), and add a table with higher priority (ip rule add ...) with a rule for PC2 -> router1 (ip route add table ...). You'll also need a similar setup onrouter1. People will recommend to do routing withiptables, that's not necessary and less efficient (a pet peeve of mine).
– dirkt
Dec 25 '18 at 6:39
add a comment |
I've got this situation:
- router1 192.168.1.1
- PC1 Linux with DHCP cable 192.168.1.3
- router2 DHCP cable 192.168.1.2 and static 192.168.2.1
- PC2 Linux with DHCP cable 192.168.2.2 and DHCP WiFi 192.168.1.4
- router1 is the main router providing Ethernet and WiFi
- pc1 is connected to router1 with a cable
- router2 is connected to router1 with a cable and has a second DHCP server on a second interface
- pc2 is connected to router1 via WiFi and to router2 with a cable
I've setup all routing tables so that hosts can communicate with eachother and also pc2 goes on internet via router2.
The problem I have is that when pc2 communicates with pc1, it does it over the WiFi.
Is there a way to force all outbound traffic from pc2 to go out via the Ethernet interface and use the WiFi only to receive and reply?
Thanks
linux networking wireless-networking router
asked Dec 25 '18 at 2:51
SycoSyco
18612
I've got this situation:
- router1 192.168.1.1
- PC1 Linux with DHCP cable 192.168.1.3
- router2 DHCP cable 192.168.1.2 and static 192.168.2.1
- PC2 Linux with DHCP cable 192.168.2.2 and DHCP WiFi 192.168.1.4
- router1 is the main router providing Ethernet and WiFi
- pc1 is connected to router1 with a cable
- router2 is connected to router1 with a cable and has a second DHCP server on a second interface
- pc2 is connected to router1 via WiFi and to router2 with a cable
I've setup all routing tables so that hosts can communicate with eachother and also pc2 goes on internet via router2.
The problem I have is that when pc2 communicates with pc1, it does it over the WiFi.
Is there a way to force all outbound traffic from pc2 to go out via the Ethernet interface and use the WiFi only to receive and reply?
Thanks
linux networking wireless-networking router
linux networking wireless-networking router
asked Dec 25 '18 at 2:51
SycoSyco
18612
asked Dec 25 '18 at 2:51
SycoSyco
18612
asked Dec 25 '18 at 2:51
SycoSyco
18612
asked Dec 25 '18 at 2:51
SycoSyco
18612
asked Dec 25 '18 at 2:51
SycoSyco
18612
18612
On PC2, you'll have to use policy routing (google), change the priority of local routes (ip rules), and add a table with higher priority (ip rule add ...) with a rule for PC2 -> router1 (ip route add table ...). You'll also need a similar setup onrouter1. People will recommend to do routing withiptables, that's not necessary and less efficient (a pet peeve of mine).
– dirkt
Dec 25 '18 at 6:39
add a comment |
On PC2, you'll have to use policy routing (google), change the priority of local routes (ip rules), and add a table with higher priority (ip rule add ...) with a rule for PC2 -> router1 (ip route add table ...). You'll also need a similar setup onrouter1. People will recommend to do routing withiptables, that's not necessary and less efficient (a pet peeve of mine).
– dirkt
Dec 25 '18 at 6:39
On PC2, you'll have to use policy routing (google), change the priority of local routes (
ip rules), and add a table with higher priority (ip rule add ...) with a rule for PC2 -> router1 (ip route add table ...). You'll also need a similar setup on router1. People will recommend to do routing with iptables, that's not necessary and less efficient (a pet peeve of mine).– dirkt
Dec 25 '18 at 6:39
On PC2, you'll have to use policy routing (google), change the priority of local routes (
ip rules), and add a table with higher priority (ip rule add ...) with a rule for PC2 -> router1 (ip route add table ...). You'll also need a similar setup on router1. People will recommend to do routing with iptables, that's not necessary and less efficient (a pet peeve of mine).– dirkt
Dec 25 '18 at 6:39
add a comment |
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On PC2, you'll have to use policy routing (google), change the priority of local routes (
ip rules), and add a table with higher priority (ip rule add ...) with a rule for PC2 -> router1 (ip route add table ...). You'll also need a similar setup onrouter1. People will recommend to do routing withiptables, that's not necessary and less efficient (a pet peeve of mine).– dirkt
Dec 25 '18 at 6:39