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3
votes
1answer
30 views

IP Routing on All Switches or just Core

I have 1 core switch in our MDF for server equipment and 6 data closet switches that connect clients. At this point I only have IP Routing enabled on the core switch so all IP routing is done in one ...
0
votes
0answers
14 views

How to duplicate multicast packets on several interfaces?

I would like to send a stream from a Linux server to several Linux clients via a multicast address. The clients are directly connected to the server but on different interfaces: bnep0 and bnep1. ...
0
votes
0answers
16 views

Destination NAT on different Internet IPs with Kerio Control

We are using Kerio Control as our cloud infrastructure firewall. I have two internet IPs (v4) assigned to Internet Interface. I need requests to one of these IP's to be DNATed to a webserver inside ...
-1
votes
2answers
40 views

How to null route a dns zone [closed]

I have a domain that was attacked and flooding the server apache system. The only way to detour the attack is to reroute the dns off the server. Is there a generic IP like "127.0.0.1" that I can use ...
1
vote
1answer
31 views

RHEL Routing with 3 nics

I am trying to get my routing to work on my RHEL 7 with 3 nics and 3 subnets. I have the followig nics DEVICE=eth0 BOOTPROTO=sttic ONBOOT=yes TYPE=Ethernet USERCTL=yes PEERDNS=yes IPADDR=10.241.78.5 ...
1
vote
1answer
104 views

How do I set up an ssh -w tunnel VPN between AWS VPC and a Linode?

I'm probably not going to use this for the long term, but I still want to know why this isn't working. I've set up a simple ssh tunnel from my Linode instance to one AWS EC2 instance within my VPC. ...
0
votes
1answer
50 views

HP RIP on LAN Topology

We have 1 main core HP Routing Switch in server room that connects other data closet switches and 6 Data Closet switches that connect the clients. We only have 3 VLANS. I have 2 questions: 1.) ...
0
votes
0answers
24 views

HP IP Routing Topology

We have 1 main HP Switch in Server Room and 6 other data closets switches that connect the clients. In terms of routing we have 3 VLANs that require routing. Right now the only switch that does any ...
0
votes
2answers
50 views

EC2 multiple outbound IP addresses setup

I've looked everywhere and haven't found a good solution to the following problem: I'd like to set up an ec2 instance with 2 public ip addresses, with 2 rails servers each using one IP address. They ...
1
vote
4answers
16k views

Windows: Get the interface number of a NIC

I have the following problem: I have a server with a rather dynamic network configuration and need to configure routes on it with the IF parameter: route add ... mask ... ... if ? Is there a ...
0
votes
0answers
46 views

Linux Redhat inbound NIC routing

I am running a SIP application on a Redhat Linux server with 4 nics on separate LANs. SIP runs on UDP port 5060. When I send a inbound packet to port 5060 NIC0, the packet gets delivered to the ...
1
vote
3answers
110 views

Route Subnet to only access 1 IP address on different VLAN HP Procurve

I'm trying to route VLAN 300 which has a subnet 192.168.100.0/26 to only access 10.220.1.10 on VLAN 220 but struggling with the config. HP's documentation from what I can tell just wants me to enable ...
0
votes
0answers
115 views

Nanostation M5 Point to Point, SOHO Router IP Addressing

I have two sites both with Line of site from each other. Each of the two sites has a Draytek 2830 on site with an ADSL connection. I have a pair of Nanostations which I want to setup on the Ethernet ...
0
votes
2answers
76 views

Routing between 2 networks and 2 routers

I have a WatchGuard XTM33 and a Cisco ASA 5505, current network is running off of the Cisco and I want to eventually migrate over to the WatchGuard using new IP scheme. ASA 192.168.111.1/24 WG ...
0
votes
2answers
337 views

Linux router: ping responses going through the wrong interface

I have a Debian server acting as a router for a small network. It has 3 network interfaces, one LAN and 2 WANs (two different ISPs, let's call them A and B, each of them with a public static IP ...
0
votes
2answers
57 views

How to forward traffic to different nics based on source?

I'm a newbie to IPtables, but am looking to do send traffic to a specific card based on the source. Here's what I would like: eth0 - all traffic comes in on this NIC Depending on the source IP, I ...
1
vote
1answer
47 views

Ip-in-Ip tunnel not working — Packets not being decapsulated

I am trying to forward packets from HostA to HostB using ip-in-ip tunneling. While packets are reaching their destination, they are not being decapsulated by the receiving host, and thus being dropped ...
0
votes
0answers
28 views

Default gateway through static route

I want to forward all my trafic to a certain host on the internet, I'm not interested in any tunneling - I just want something like: route add -host x.x.x.x gw 10.0.0.1 route add default gw x.x.x.x ...
1
vote
0answers
205 views

Shorewall: DNAT to IPSEC tunnel zone not routing correctly

I have a ipsec tunnel working that gives access to a 192.168.4.0/24 lan. It is working fine and I can access hosts on the other side without problem: # from fw and lan hosts: # ping 192.168.4.44 PING ...
0
votes
1answer
43 views

Adding static routes to remote networks

Having: My local machine (A) A remote router (B) who knows a remote network/subnet (X) My local machine's is located at the default router's (C) subnet, who know the remote router (B), but has no ...
0
votes
2answers
4k views

force traffic out a specific nic on same network

On windows server 2008 I have 2 network cards both configured on the same network (i will explain the purpose in a second) NIC1: 10.35.1.98 Mask:255.255.0.0 Gateway: 10.35.1.254 NIC2: 10.35.1.99 ...
2
votes
1answer
507 views

How to route traffic from private network to openvpn subnet (and back)

I have a couple servers at Linode. I'm trying to set them up so I have a VPN into one of the machines and can then access all the other machines using the private linode network. Public access to ...
2
votes
1answer
171 views

OpenVPN redirect-gateway breaks other tunnels

This is my ifconfig setup: eth1 Link encap:Ethernet HWaddr 54:04:a6:49:99:16 inet addr:192.168.0.12 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: ...
1
vote
1answer
2k views

ip route add works manually but throws “Error: an inet prefix is expected rather than …” when run via bash script

I'm trying to run a script that should add this route to a table 11: ip route add local 10.1.3.212 dev eth1 proto kernel scope host src 10.1.3.212 table 11 If I run this command manually, it is ...
0
votes
1answer
41 views

Network card with 2 ips, Application can only listen on 1 IP, want other IP routed

I run an ubuntu server. It has 1 NIC with 2 IP address. it looks like this: # The primary network interface auto eth0 iface eth0 inet static address 192.168.1.23 netmask 255.255.255.0 gateway ...
2
votes
2answers
4k views

proxmox KVM routed network with multiple public IPs

I have a dedicated hosting with hetzner. Additionally i have bought a 6IP subnet. My main IP is: 148.111.111.200 My main subnet is: 255.255.255.224 My additional IPs are 148.222.222.1 to ...
0
votes
0answers
27 views

Want to route NFS response via an interface. What will the source ip of the packets being sent out?

The NFS server is listening on an interface for a new connection, once a new TCP connection is established the NFS operation is carried out. I'd like to send this NFS response via a different ...
1
vote
1answer
162 views

iptables rule to set source IP depending on local userid

I have two users, alpha (uid 500) and beta (uid 501), and two IP addresses assigned as eth0 and eth0:1. I would like all outgoing packets originated by processes started by user alpha to be marked ...
1
vote
0answers
54 views

Inter VLAN Routing

I have VLAN 1 and VLAN 2 setup on HP ProCurve Switch, each linked to a different scope on DHCP server. VLAN1 = 10.220.0.0/23 VLAN2 = 10.210.0.0/21 I can't ping VLAN1 devices from VLAN2 and vice ...
0
votes
0answers
108 views

vServer: Configuring single (/128) assigned IPv6 addresses for use as IP address pool for IPSEC (Strongswan) road warriors

I've a new (dev) vServer up and running. Unfortunately the provider only hands out single IPv6 addresses (not even /64 subnets). Now I am a bit confused how to achieve the following: I want to use ...
1
vote
2answers
420 views

Linux IP Alias not working - Amazon EC2

I can't seem to figure out this IP aliasing on Amazon EC2. I know it should be straight fwd though. In summary I have two questions (my scenario details follows after questions), in priority: How ...
4
votes
2answers
25k views

Unable to set up a static host route - “SIOCADDRT: No such process”

At my office, there is a Windows Server 2008 router, 192.168.16.1, which is our default gateway. This sends data through our main internet connection. This works perfectly. 192.168.16.1 also has ...
1
vote
3answers
515 views

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 ...
11
votes
3answers
9k views

Is it possible to include switches in traceroute hops?

I was wondering if it's at all possible to make a Dell Powerconnect 2848 switch show when running internal traceroutes. This would help with diagnosing issues and make it far easier to see where ...
-1
votes
1answer
59 views

how to 2 ip virtual in public dan private with forward to different destination

Here my case, Server 1 public IP in 1 box (eth0) -> 203.x.x.55/28 and 57/28 gw 203.x.x.49 private IP (eth1) -> 10.10.8.1 Server 2 private IP in 1 box (eth0) -> 10.10.8.5/24 and 7/24 gw 10.10.8.1 ...
-2
votes
1answer
454 views

Easiest routing solution for a typical firewall with WiFi routers setup - WAN-2-hops-away network

Suppose a local network connected to the internet via a single firewall router. Devices that connect directly (= using only layer 2 devices) to that router are: hosts WiFi routers providing the ...
1
vote
2answers
660 views

RDP to machine on network with different subnet

Our broadband router has just been changed and our network which was on 172.18.2.xxx is now 192.168.9.xxx. All is fine but I have one box which we used to RDP into and which has no screen mouse or ...
0
votes
1answer
37 views

How to use services secured by our gateway IP from clients outside our network?

I work for an organization that uses a managed host for App1 and a collection of apps, App2..N App1 is a web application, hosted on a linux webfarm by a large vendor - and it uses a forms-like ...
0
votes
1answer
28 views

sshd is not responding to requests from tun0

I am running CentOS 6. It is connected to OpenVPN with the following routes: Destination Gateway Genmask Flags Metric Ref Use Iface 100.207.0.0 0.0.0.0 ...
0
votes
1answer
328 views

Routing Strategy for Multiple VPCs on AWS

I am planning to setup multiple Virtual Private Clouds (VPC) on AWS. These VPCs will be located in different geos. Each VPC will have public as well as private instances. I need to incorporate an ...
0
votes
0answers
367 views

CentOS 6.4 routing with multiple gateways

I have a routing problem 3 interfaces on a router, CentOS 6.4 interfaces: provider x, eth4, ip xxx.xxx.13.xxx/21, gw xxx.xxx.8.1 provider y, eth1, ip yyy.yyy.yyy.yyy/24, gw yyy.yyy.yyy.1 eth3, ...
-1
votes
1answer
116 views

Can 2 IP's in the same network communicate with 2 different netmask

I need to expand a network really quick and don't have time or access to change the netmask of all devices. Can the following communicate? IP 1 - 192.168.10.10 mask 255.255.255.0 IP 2 - ...
0
votes
0answers
71 views

Route on Ubuntu server

I to all... I've a problem configuring Ubuntu server NIC. The situation: eth0 => ADSL 1 => 94.xxx.xxx.150 / 28 eth1 => Local Lan => 10.1.1.120 / 24 eth2 => ADSL 2 => ...
0
votes
0answers
100 views

Incoming http request routed to wrong ip address

I have the following configuration on an EC2 linux instance: eth0 Link encap:Ethernet HWaddr 12:31:3B:08:34:AA inet addr:10.x.x.x Bcast:10.x.x.x Mask:255.255.254.0 inet6 ...
3
votes
2answers
7k views

How do I delete a route from Linux routing table

This turns out to be harder than I thought. The routes I want to delete are the "!" rejected routes, but I can't seem to formulate the right "route del" command to pull it off. Here is the routing ...
-1
votes
3answers
828 views

want to Make software router having two nic cards using centos 6.4

I'm new on CentOS. I have a CentOS 6.4 system having 2 NIC cards. I want to setup a gateway so I can get internet from public ip over 1st nic card (eth1) and forward the network over 2nd nic card ...
-1
votes
2answers
138 views

Webserver Multiple Gateways

I have Ubuntu Server 12.04 I have 3 gateways on my lan 10.0.0.1 10.0.0.2 10.0.0.3 Ubuntu has 3 NICs eth0 10.0.0.60 gw 10.0.0.1 eth1 10.0.0.61 gw 10.0.0.2 eth2 10.0.0.62 gw 10.0.0.3 If a request ...
1
vote
2answers
116 views

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 ...
0
votes
1answer
343 views

IP-Route multiple IPs from one NIC to Hyper-V instances

I have one root server @ server4you, unfortunately, S4U doesn't allow Bridging, so I am stuck with a problem! I have 4 IPs mapped on one NIC and need to realise following configuration: XX.XX.XX.1 ...
1
vote
0answers
141 views

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 ...