Are there any tools or API hooks for troubleshooting iptables or routing on Linux? (besides the obvious -j LOG) In other words: what to do when tables with 200 or 300 firewalling rules after adding a new rule still doesn’t allow new traffic. Or when a router with over a dozen network interfaces replies to … Read more
I am having two private IP attached to an interface. inet 10.255.0.127/24 brd 10.255.0.255 scope global eth1 inet 10.255.0.153/24 brd 10.255.0.255 scope global secondary eth1 When traffic leaves the eth1 interface it uses 10.255.0.127 (primary) as the src IP. How can I change the src IP to use 10.255.0.153 (secondary) based on specific destination. For … Read more
I’ve got two WAN interfaces coming into a Debian 8 VM. WAN 1 – All Internet and local traffic. (0.0.0.0/0) Has a a static IP, thus IP, netmask and gateway are fixed values. WAN 2 – Specific private subnet traffic only (10.100.0.0/16). IP obtained via DHCP, can be anywhere in the 10.0.0.0/8 range. I don’t … Read more
I have a simulated ad-hoc network running on Docker, using Ubuntu 16.04 as a base. I have a number of routing tables. The table in question, table 102, appears as: root@b22e0eafe06d:~# ip route show table 102 172.17.0.3 via 172.17.0.3 dev eth0 proto static 172.17.0.4 via 172.17.0.4 dev eth0 proto static 172.17.0.5 via 172.17.0.3 dev eth0 … Read more
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 3 years ago. Improve this question broadcast 100.125.71.152 dev rmnet_data1 proto kernel scope link src 100.125.71.153 local 100.125.71.153 dev rmnet_data1 proto kernel scope host src 100.125.71.153 … Read more
Im facing a problem due my lack of experiencie on routing. I need to config the next things (all run on my computer virtualized, if works, i will pass it to hardware) [internet] —- [DMZR]–/–[GATEWAY]—/—[LoadBalancer]—/—[BACKEND] internet: 192.168.10.0/24 gateway:10.10.10.0/29 Loadbalancer:10.10.10.0/29 | 10.10.1.0/24 Backend:10.10.1.0/24 Loadbalancer has 2 nic, on on the same net as gateway : 10.10.10.0/29 … Read more
Before everything, thanks for reading the next question. I have script,(ipUDPspoof.rb), which is a client/server script in Ruby (you choose the parameter 1 to be server and 0 to be client, at initialization…for example “sudo ruby sandbox.rb 1” to initialize the server) that will create and send/receive RAW packets in UDP protocol, with different IP … Read more
I’m trying to create ip rules for multiple WAN links and keep connectivity across multiple local networks. I have currently two network cards each connected to a different gateway to the internet and I’m routing based on the interface that the packet came in. Would it be possible to change that so that I would … Read more
(Similar to this question, but with two different DHCP-assigned IPs) Is there any way to let dhclient or dhcpcd request two different IPs for one physical interface, e.g. via virtual interfaces eth0 and eth0:1? Maybe by letting eth0:1 have a different MAC? Or by creating a virtual eth1 bridged to eth0? Or can I use … Read more
My setup is a VM host with two network interfaces where I want to use one as private/internal and the other one as public (which will get a public address on the host), where all the NAT magic to the guest machines will happen. Two interfaces means two gateways (one via eth0, 10.0.0.1 and the … Read more
