The tag has no wiki summary.

learn more… | top users | synonyms

0
votes
1answer
49 views

IP Forwarding Issue

This is my first post, so thanks in advance for y'all's help. I'll try to keep the background succinct and relevant. I am running a server on centOS 4.6 for network client testing. I have the local ...
0
votes
1answer
22 views

Master and slave devices talking to each other through another device with two interfaces. All in the same network

I have three devices, one is a master which will talk with the slave and Device3 but it is only physically connected to the Device3. The slave will speak only with the master(also through the ...
1
vote
1answer
56 views

iptables forward ip to another ip

I've configured multiple IP Addresses on my Ubuntu ssh server. Now the server can be accessed by using any IP Address, from 192.168.0.51 to 192.168.0.99. Depending on which IP Address someone uses to ...
0
votes
1answer
42 views

forwarding packet from one interface to another interface

I have an embeded system with 2 interfaces e0 and m0, whose ips are 10.0.0.20 and 192.168.0.20, respectively. Incoming packets into e0 have an ip of 10.0.0.10 and should be forwarded to m0 interface ...
0
votes
1answer
40 views

Enable IP forwarding inside an OpenVZ container but disable it on host

Is it possible to enable IP forwarding inside an OpenVZ container but keep it disabled in host system? I understand that OpenVZ containers and host share kernels, but I can use sysctl to set ...
0
votes
0answers
34 views

Redirect traffic through a computer to another connected to the same switch

I am trying to setup a single sender, single bottleneck and single receiver network. Network Image The router in the image is a computer that has ip_forwarding enabled. PC1 has the default gateway ...
0
votes
1answer
83 views

Forwarding IP address using pf

I'm trying to forward an external IP address to another external IP address with pf. The equivalent iptables command would be iptables -t nat -A OUTPUT -d [ipaddress1] -j DNAT --to-destination ...
2
votes
0answers
530 views

OSX Yosemite IP Forwarding not working

I coudn't manage to set up basic ip forwarding on OSX Yosemite 10.10.1 Mac-Mini. I use the exact same configuration on a OSX Mavericks 10.9.5 Mac-Mini, and it's working perfectly ? I set the sudo ...
1
vote
0answers
36 views

Double IP forwarding not working

I have the following 2 debian servers in my scenario: The first one is my main openvpn server, it has 2 NICS active eth0 (172.25.156.146) and eth3 (172.26.16.1) - The second server has also 2 NICS ...
0
votes
0answers
132 views

Iptables - centos 5.8 - how to forward ports to internal lan

I'm trying to map port 8080 to another machine running a web server. ppp0 = ADSL internet connection eth0 = ethernet card of linux machine (ip address: 192.168.0.2) 192.168.0.105 = other machine ...
0
votes
1answer
378 views

openvpn windows routes ip forwarding enabled but not working

I have setup an openvpn network, I have in my client windows two interfaces, one public with IP 1.2.3.4 and the openvpn interface, with ip 192.168.244.10 I am able to ping from windows to the ...
0
votes
0answers
91 views

Ubuntu as IPSec L2TP client with NAT traversal

Goog afternoon, I have a corporate local network located behind NAT. There is another NAT in this local network for the corprorate server on Ubunit 12.04. So if clients connect to that server ...
1
vote
1answer
2k views

Getting the client IP when passing through a reverse proxy

In my VPS I am hosting several websites. everyone living in its own Linux Container. For instance Site #1 -> 10.0.3.111 Site #2 -> 10.0.3.112 Site #3 -> 10.0.3.113 To know where to ...
0
votes
1answer
57 views

SSHD to retrieve forwarded client IP

This is my use case: I have a bunch of hosts behind load-balancers and clients SSH through the load-balancer. The LB internally creates a new connection so the connection with the end-host has the ...
1
vote
0answers
87 views

Openstack instances, routing, packets not delivered for SPECIFIC services

I am taking over management of an existing openstack system at work and I have only a little prior experience with openstack. I have about 8 instances running and all of them appear to function ...
4
votes
1answer
685 views

Bind outgoing SOCKS-server traffic to a specific IP

At the office we get access to the web via a SOCKS server which is started with the command: ssh localhost -f -N -D *:8888. This server has 2 IPs (but only one network card): eth0 xx.yy.zz.1 eth0:1 ...
0
votes
1answer
238 views

forward snmptraps with snmptrapd to second host

I have a setup with snmptrapd listening on udp:162 to receive snmp traps. They are then processed on this host with snmptt. I am now in the need that I need to forward those traps additionally to ...
0
votes
0answers
462 views

OpenVPN on Ubuntu: IP Forwarding not working

I have successfully set up a VPN connection between a Windows 8 client and my Ubuntu server running OpenVPN. However, I just cannot get IP forwarding to work. I have adjusted all settings as desribed ...
3
votes
3answers
3k views

Redirect IP Address to Domain Name

I am attempting to redirect the IP address of my domain to the domain name and am running into trouble. The IP address does not redirect to the domain name listed in the redirect statement below. ...
0
votes
1answer
147 views

IP routing Solaris 9 access the internet from local network

I am trying to configure the NICS on the Solaris Sparc server. My problem lies in getting out to the "Internet" from the local network. I have requested the NIC to receive a DHCP server address ...
-1
votes
2answers
52 views

Is it possible to point multiple domains to multiple static IP's on a single system? [closed]

I'm currently running the latest version of Ubuntu Server. I currently am pointing my subdomain to my static IP address. I have 5 static IP's and I'm wondering how I could use all static IP's at once ...
0
votes
2answers
147 views

do i need IPTABLES to enable IP FORWARDING?

To simplify, let's say I got a network with 3 servers (all runnning centos 6.4) in a row: Internet---FW---LN---PN FW: firewall LN: login node PN: processing node i can ping from the FW to the ...
-1
votes
2answers
456 views

Use Domain in iptables PREROUTING

I have a www.example.com with X.X.Y.Y ip i want to forward traffic from port 80 to the domain(www.example.com), I used the following iptable: iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT ...
0
votes
1answer
36 views

routing behaviour (PAT/NAT)

|(eth0: 84.23.13.43) +--------------+ | | | NAT router | ...
0
votes
1answer
448 views

It is okay to set MASQUERADE at 2 network interfaces in a Linux server?

There is a Linux server with 3 network interfaces, eth0, eth1, eth2. IP forwarding has been turn on in this server. eth0 is connected to 10.0.1.0/24. Its IP is 10.0.1.1. eth1 is connected to ...
2
votes
2answers
2k views

Does IP forwarding on Linux act as a reverse proxy?

I have looked around and have seen many IP forwarding solutions that forward requests from an IP on one server to another IP on another server. (Basically, the forwarding of requests going to ...
3
votes
2answers
6k views

How do I forward/NAT all traffic to one interface/IP to a remote IP?

I have one "server A" that has multiple IPs attached to it, like so: eth0:0 1.1.1.1 eth0:1 1.1.1.2 eth0:2 1.1.1.3 I have another "server B" that also has multiple IPs attached to it, like so: ...
-1
votes
1answer
241 views

Linux server not routing my packets

I have a linux server (Ubuntu 12) with 2 NIC's. eth0 is connected WAN (inet 10.0.2.15 mask 255.255.255.0) eth1 is connected LAN (inet 192.168.0.1 mask 255.255.255.0) I want my windows machine to ...
0
votes
2answers
875 views

how to route external IP to internal without MASQUERADE

Ok, i'm still working on creating a dmz'd http server So now I have an ethernet tunnel using ssh -w 0:0 and I have interfaces on each end which can talk to each other: previous question So now ...
0
votes
1answer
76 views

IPTABLES Forwarding issue

Ok, so I am terrible with iptables so I need some help. Here is what I am trying to do. I have a lan box on vlan 4 (172.16.9.65) I have another box on vlan 9 (10.1.0.1) My gateway for my 172.16.9.65 ...
5
votes
1answer
2k views

connect Open vSwitch switch to real network : iptables masquerade

I'm using Open vSwitch to create a switched network between virtualBox guest machines, and i want that the host OS (Ubuntu 12.04) join this network and to configure it as the gateway of this virtual ...
0
votes
4answers
394 views

ssh to local network behind a public IP (TCP forwarding)

I want to connect (using ssh) two remote computers in a local network using a unique public IP X.X.X.X. | HOST_A---------| 172.1.1.2 | _____________ ...
0
votes
1answer
219 views

IP Forwarding and Routing in Windows 2008

I have Hyper-V running on a windows 2008. I got a new ip stack from the data center to be set on my virtual machines. But I have difficulties to set these IPs on my VMs because they are on different ...
0
votes
1answer
3k views

Linux bridge (brctl) dosnt forward IP packet when router is one of the bridge endpoints

I have setup a brctl bridge on Ubuntu with the following deployment: Cisco router -> Linux bridge -> client computer The bridge forward the following packets types: ARP,STP, but doesn't ...
1
vote
1answer
498 views

centos 6.3 kvm external ip forwarding to guests

I have a centos 6.3 server with kvm installed. The server has 4 external ips and one NIC. 176.9.xxx.xx1 176.9.xxx.xx2 176.9.xxx.xx3 176.9.xxx.xx4 I use the following configuration ifcfg-eth0 as ...
0
votes
1answer
1k views

Ubuntu IP Forwarding to virtual ethernet adapter

I've setup Ubuntu server along with ufw as a firewall. To start, I have two networks: Public: 66.xxx.xxx.70 - 66.xxx.xxx.78 Private: 192.168.3.1 - 192.168.3.255 My network config: auto eth0 iface ...
0
votes
2answers
786 views

Proxmox - Live migration between different subnets

I have a proxmox cluster, that is distributed over two different subnets having two different gateways. In the first subnet VMs get an publicly available static IP address by MAC address mapping. ...
-1
votes
1answer
97 views

Apache Mysql PHP5 ubuntu home server configuration? [closed]

Here is my problem i have been searching for days now and i didn't found something i can apply directly. i have apache and Mysql and php and i am using ubuntu. I have a static IP, but i am not in ...
0
votes
1answer
185 views

Host forwarding fails, server is up, domain name tests ambiguous

I have a domain name registered with http://www.registryrocket.com/ The "main" site, which is called rudolfcode.net, is registered under godaddy, and forwards to a heroku site ...
1
vote
1answer
2k views

What is the ip-forwarding option in dhcpd.conf?

From O'Reilly's book "TCP/IP Network Administration": option ip-forwarding 0 | 1; Specifies if the client should do IP forwarding. 0 disables IP forwarding, and 1 enables it. The only IP ...
5
votes
2answers
8k views

Pings from VPN network to VPN client work; pings into from VPN client to VPN network fail - why?

We are in the process of setting up an OpenVPN server for some servers running in a cloud. We are stumped with a connectivity problem whereby the hosts on the VPN server's LAN can ping te VPN client, ...
2
votes
2answers
383 views

Forwarding web traffic from one IP to another

We host a web site for a client that is not responding to our requests to change their "A" record for the site (they own the domain). We are migrating soon and we cannot wait for them, nor do we want ...
1
vote
1answer
2k views

net.ipv6.conf.all.forwarding = 1 is an unknown key

I have few system with ipv6 addresses. I want to forward request from one system to another. hence I kept the option net.ipv6.conf.all.forwarding = 1 in sysctl.conf but the request is not getting ...
0
votes
1answer
329 views

Server with 3 public IP and iptables

I have a linux box with two NIC cards: eth0 and eth1. In one card i have 3 public IP: eth0 = 10.10.10.1 eth0:1= 10.10.10.2 eth0:2= 10.10.10.3 In the other card I have one local IP eth1 = ...
0
votes
1answer
1k views

Setup a local bridged connection using VirtualBox

I'm trying to forward/masquarade some trafic from my guest CentOS6 (virtualbox with bridged connection). Host is OSX Lion. Here is my network layout: en1 - host iface address: 78.251.xx.yy ...
0
votes
1answer
256 views

pptpd server does not route internet traffic?

I have set up a pptpd server on my computer and clients can connect to it successfully. I have enabled ip_forwarding in /etc/sysctl.conf and added the following rule to my iptables to masquerade the ...
1
vote
2answers
523 views

Linux: Ip forwarding or bridge?

On a Ubuntu 8.04 I have two interfaces eth3 and eth4:avahi. eth3 is in my local network with 192.168.178.63. eth4:avahi has the ip 85.214.144.211. From this box I can ping 85.214.144.212 ...
2
votes
3answers
150 views

Firewall based equivalent to SSH tunnelling

I have a web server that connects to a 3rd party database server and is granted permission to do so via a firewall rule on the database server. When I'm developing locally on my laptop, I use an SSH ...
0
votes
1answer
378 views

Activate ipforwarding on Windows Server 2k8 only for specific network adapter?

Is it somehow possible to activate ip forwarding only for one specific network adapter? Do I need to activate it for all of them and then somehow controll it with firewall rules or is there another ...
0
votes
2answers
2k views

Varnish configuration, NamevirtualHosts, and IP Forwarding

I currently have a bunch of NameVirtualHost based websites, load balanced between 3 apache2 servers using ldirectord. I would like to insert varnish as a reverse-web-proxy between ldirectord and ...