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Questions tagged [ip-routing]

281 questions
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Forward 192.168.1.x to 95.211.x.x

I want to forward an internal IP address to an external one. So here's what I do: echo 1 > /proc/sys/net/ipv4/ip_forward Then I use iptables: iptables -t nat -A PREROUTING -s 192.168.1.x -j DNAT --to-destination 95.211.y.z iptables -t nat -A…
Emre S
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ip routing of multiple virtual IPs on one ethernet card

I am working on a live network of multiple boxes and routes with a long history of changes. I am trying to consolidate them with the minimum disruption. I'd like to get rid of some old routers and have the connections handled by newer (live)…
AndyS
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HP P4000 LeftHand Setup: Configure a VIP (Virtual IP)

I'm trying to setup a HP LeftHand Storage System (2x p4300) in our testlab. As I have no router (but only a Catalyst 2960-S switch) in the testlab: Is there a way to setup a VIP (Virtual IP) to enable redundancy? If yes, how do I do that?
StackUnderflow
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Is it possible to see the routing table at the gateway (next-hop) router?

Suppose the output of the "route -n" (on Red Hat/Debian) command is as follows: Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 a.b.c.d 0.0.0.0 UG 0 0 0 venet0 Given that…
tonytz
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Cisco 800, RFC1483 Routing, no nat, block public IPs

My issue. IP traffic to public IPs does not work. Traffic outbound works fine. Thus, I cannot access 91.x.x.162 from www. Thus no route for IP back to 91.x.x.162. The connection works in part as: Traffic from subnet works just fine, Firewall can…
fundutzi
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Internet routing doesn't work in LAN on a two NIC's (WAN + LAN) Windows Server 2008 R2

We have the following network setup: A) Modem (192.168.0.1) with DHCP disabled B) Windows Server 2008 R2 with dual NIC: B1) WAN interface (192.168.0.2) B2) LAN interface (192.168.1.2) C) Switch with multiple LAN computers (~20) connected getting…
Niels vd Meij
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routing eth0:1 directly to kvm VM

Ive got a Dedicated Server with 2 Public IP Adresses and would like to route all eth0:1 traffic to a KVM Guest via iproute2 or even iptables. Outgoing Traffic should also be routed to eth0:1 - eth0 and eth0:1 are assigned in different Subnets. Setup…
mojo
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Mac Server bizzare routing table

My mac routing table usually is very simple. I know it's based on bsd , but what's it doing or trying to do. My routing table is usually very simple however, the second one, default was point to link5 ? Is this normal, or is this IPV6 craziness at…
The Unix Janitor
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Routing to other subnets results in wrong ARP requests

I would like to manually set up routing to subnet 95.168.0.0/16 through IP which is an alias: 94.23.94.161. IP alias is set up like that: /sbin/ifconfig eth0:0 94.23.94.161 netmask 255.255.255.255 broadcast 94.23.94.161 At the beginning i tried…
WMP
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Using a Linux server as a firewall/router

I want to configure a dedicated Linux server as a router for protecting dedicated servers with public IPs. I have 6 dedicated servers and I want to add a router/firewall to protect them. I will use another server with two network cards (eth0 and…
routing
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How to send Voice IP traffic over a different DSL router

We have the following equipment for our internet and voip access 2 x netgear ADSL routers 1 x DHCP / DNS server (Windows 2008 server) Numerous PCs VOIP Phones I want to configure our network so that data is routed over one of the ADSL lines and…
Mark
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Problems with firewall when forwarding 8080 thru Comtrend5071T

I am trying to forward port 8080 thru my modem but i have not been successful. to be exact my desired route is as follows: Connection to Server A (192.168.0.5) is tested as working (192.168.0.5:8080) Server A (192.168.0.5) forwards thru Linksys…
Alex Gittemeier
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Reliable Multicast Programming (PGM) on Windows

I want to use the Reliable Multicast Programming (PGM) protocol on Windows. http://msdn.microsoft.com/en-us/library/windows/desktop/ms740125%28v=vs.85%29.aspx I know Windows support it. However, it seems that I need network devices (routers and…
Coder
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What's the difference between GRE and IPIP tunnel?

What's the difference between GRE and IPIP tunnel and which one is better for connecting two Linux machines?
Antonio
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Ubuntu 10.04: Two interfaces on a same subnet with a same gateway

My ISP has given me a 187.x.x.224/29 subnet. The gateway is 187.x.x.225 I have a Ubuntu server with 6 ethernet ports. The server does NAT routing and also acts as a webserver. My plan is to have eth1 and eth2 have seperate WAN ips: 187.x.x.226 and…
nixnotwin
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