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0
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1answer
17 views

Setup openvpn as interface device only

I just setup OpenVPN client using this guide on The Geek Stuff But now (somewhat as expected) all my traffic is routed through the VPN. I actually just want to set up the interface device. Does ...
-3
votes
0answers
18 views

Change NIC index

I know there are several ways to query for the Index number of a NIC on windows (route print from CMD) but I wanted to know if there was a way to change that number to an index number that is not ...
0
votes
2answers
73 views

How does Linux pick which network interface to use?

Let's say I have a machine with two network adapters on different subnets, eth0 (10.0.100.5) and eth1 (10.0.200.5). Assuming both subnets have routes to the internet (though their own NATs) and to the ...
0
votes
0answers
28 views

How to rout only ftp packets to a particualr interface ppp0 from eth0 in Linux

I need to create an automated script for creating dial up connection and test it using ftp file transfer to a remote server. I have successfully written the script which creates a new dial up ...
0
votes
1answer
45 views

how to connect/bridge two interfaces on different processes

I have two processes A and B (simulating real hardware device), each with their own TAP interfaces. If I want to send an ethernet packet to A, I send it on interfaceA, and similarly if I want to send ...
0
votes
0answers
47 views

flushed IPs - cannot acces to my server

Edit: If think that there is no problem with IP. However, there is something very strange. Indeed, I've no logs at all. The latest logs was when I restarted my server after removing IPs. OS: Debian ...
0
votes
1answer
115 views

Linux: Duplicate network interface to simulate link failures

I run Ubuntu. I need to add some latency and/or some network errors to see if my application can handle with network failure ( connecting & disconnecting ). I found "tc" tool which will be helpful ...
0
votes
2answers
108 views

Iptables unable to allow ssh through second interface

I am having an issue where as I am unable to get SSH outgoing connections to be preformed with my current firewall rules from my second interface (eth2). The machine I am trying to connect from has ...
0
votes
1answer
223 views

Routing tables in OS/X Mavericks - causing traceroute: sendto: Cannot allocate memory

OS/X does most of its routing based on the order of the interfaces in 'Network Preferences'. I need to separate traffic, so I've put the default route first, and then routed traffic to the second ...
0
votes
0answers
98 views

How can I add a new physical interface to an Endian Community Firewall?

I just installed the Community Endian Firewall on my system. But it's just recognizing the first 4 interfaces (after going into shell and doing a ifconfig shows br0, br1, br2 and br3). How can I add ...
2
votes
1answer
424 views

Ping not working from tap interface attached to bridge interface with ip on same subnet as that of bridge to outside

My requirement is to create a multiple tap interfaces, each with ip address on same subnet. I tried this by creating a bridge br0 (192.168.1.199) ...
3
votes
1answer
729 views

Make sshd listen to a specific interface

On my machine I'm using OpenVPN which use the tun0 interface. I want sshd to listen only on this interface. I know, I can specify the IP address to listen to in /etc/ssh/sshd_config with a ...
2
votes
0answers
113 views

Debian, IPv6 is not asssigned to interface

I have a Debian 7 Server with several networks and KVM VMs running configured: 2a01:4f8:191:439b::/64 144.72.132.208/29 The IPv6 Subnet is splitted into /96 Networks to assign each bridge a own ...
3
votes
1answer
4k views

How do I route all traffic from clients connected to the DD-WRT to its OpenVPN tunnel tun0?

I am setting a secondary (DD-WRT) router to act as a OpenVPN client so that all clients would get VPN access simply by connecting to the router. But seems clients traffic is always routed via the main ...
-1
votes
2answers
7k views

CentOS 6.5 not bringing up network interface automatically after reboot [ifup eth0]

I am having this issue with many of my CentOS servers where after a reboot the network interface fails to come up automatically. This is a big problem for me since I need to drive to the datacenter ...
0
votes
1answer
54 views

Blocking incoming traffic for interface

I have created an interface eth0:2 and I want to make curl requests from that interface only so I want to block all ports and incoming traffic on that interface. This iptables rule used to work, but ...
0
votes
1answer
21 views

Using separated interface for virtualbox machine

I have a server connected to two network interfaces (via two different Internet services providers). The server runs Ubuntu OS. I want to use exactly one of the interfaces only for a virtualbox ...
0
votes
4answers
145 views

Server with 3 network cards

Totaly edited: I have 3 nic with links eth0 eth1 eth2. I made 3 table T1 T2 T3. In /etc/network/interfaces i wrote: auto eth0 iface eth0 inet static address 1.0.0.1 netmask ...
1
vote
1answer
61 views

Inactive router on quagga

Im trying to connect 5 virtual machines using quagga but for some reason one of my virtual routers appears as inactive, when I use "show ip route" my router with IP "192.168.2.2" is inactive ...
0
votes
0answers
169 views

Setting SNMP interface aliases

I've been trying for a long while now to get a set of Allied Telesis switches to display links in OpenNMS. Long story short, I want/ need to set interface aliases for ports. If I use snmpwalk -v2c -c ...
2
votes
4answers
136 views

How to disable NIC transmitter or receiver in Linux

Is it possible to disable either the tx or the rx in a NIC? I am setting up a network monitoring machine and I would like to be sure that no packet will be introduced by this machine at the network. ...
0
votes
1answer
2k views

NTPD seems to delete all network interfaces

We have a couple of virtual interfaces configured on eth0 on a CentOS, and every now and then, they went down seemingly out of the blue. Now after going through the log files, I found out that ...
0
votes
2answers
374 views

Windows Server 2008/2012 with 2 public IP, how bind .exe to particular IP [closed]

On Windows Server 2008 R2 or 2012, if I have 2 public IP, how can I manage applications to use first or second IP? Can Windows Server do this (like via Properties on .exe file) or this is possible ...
0
votes
0answers
175 views

Is there a way to get Apache to listen on an interface instead of an address?

This may be a bit of an X-Y question: I want to be able to clone and destroy cloud servers and not reconfigure the Listen directive for Apache that only the load balancer can get to. But I don't ...
0
votes
2answers
300 views

How to run Linux system commands from web interface?

I'm looking for a clean and secure way to run specific Linux system commands from a web interface. Let's say I would like to sudo -u differentuser ping 0.0.0.0. The IP address is supplied by user in ...
-1
votes
1answer
2k views

Multiple IP - different gateways - one interface - Debian Squeezy

i was reading many answers here and everywhere, but I cannot find the right one. I tried several solutions, but nothing works. I have a server with ONE Interface eth0. I have multiple IP's, but I ...
1
vote
0answers
151 views

linux kernel configuration to filter multicast traffic based on interface

I have two virtual interfaces (eth0.2, eth0.3) in my PC. I am sending multicast data from eth0.2 to eth0.2. Multicast data is received in eth0.2 but also received in eth0.3, the other virtual ...
0
votes
2answers
950 views

Cisco router configuration subnet

I am configuring a router to three different subnet as follow. Sub1: 192.168.1.1-254 255.255.248.0 Sub2: 192.168.2.1-254 255.255.248.0 Sub3: 192.168.3.1-254 255.255.248.0 In my ...
0
votes
1answer
234 views

Enabling Ethernet X3530 M4

I have IBM X3530 M4, and it appears to have 4 ethernet ports, but under Ubuntu just 2 ethernet ports are enabled. How can I enable the other two ethernet ports?
2
votes
4answers
971 views

Is it possible to run two services on the same ports with different IP but on the same machine?

My question is simple. Is it possible to run TWO different game servers using exact same port but on different IP's using same network interface on the same server ? Does each IP adress have it's ...
0
votes
2answers
112 views

How to perform remote backups on a USB external drive?

I have a server hosting files (~300 Gb) and I need to perform a full backup every week on an exernal USB drive. People without good IT knowledge need to be able to do it too, so it has to be a very ...
1
vote
3answers
324 views

RHEL 5 blocking outgoing traffic, incoming SSH works, traffic on 2nd interface works, iptables is off

I'm having a strange problem with an RHEL 5 server. I changed its IP address, we are migrating to a new address pool, and something is blocking all outgoing traffic, but I can SSH in on that ...
0
votes
1answer
163 views

Debian Dmesg Error - What does this output mean regarding an outage on eth1?

The tale of the NIC that quit; I have chucked the end of dmesg output from a server into pastebin; This server (PowerEdge 1850) has two NICs, eth0 and eth1. eth1 has a couple of VLANs defined on it, ...
0
votes
1answer
723 views

Changing network interface names on RedHat

I have a DELL server running RedHat EL 6.3 with two 1G network interfaces, and two 10G network interfaces. Following this note, I have successfully renamed the two 1G network interfaces that used to ...
0
votes
1answer
3k views

Use one NIC to create multiple interfaces for Linux KVM

I am working on a thesis research project, and I am having some difficulty figuring out how to make one NIC spawn several "bridge" interfaces such that each KVM VM can be seen on the local network. I ...
-2
votes
1answer
2k views

Difference between protocol and service interface [closed]

I came across the terms Protocol and Service interface while studying the OSI model and as far as I can tell they seem to be doing the same thing. So what's the difference between the protocol and ...
2
votes
1answer
722 views

No network loopback device after security update ubuntu 12.04

I've had Ubuntu 12.04 on a server for the last several months, with everything working fine. Last night I did an aptitude update && aptitude safe-upgrade to bring in all the latest security ...
3
votes
1answer
885 views

Set source address to use tun device does not work (Debian Squeeze)

There have been similar questions on StackExchange but none of the answers helped me, so I'll try a question of my own. I have a VPN connection via OpenVPN. By default, all traffic is redirected ...
0
votes
3answers
5k views

Multiple WAN interfaces on SonicWall TZ 100?

I'm using a SonicWall TZ 100 with a basic configuration of X0 for the LAN and X1 for the WAN. The WAN uses DHCP to obtain its routable IP address. I want to obtain a second routable IP from my ISP. ...
0
votes
2answers
106 views

Match logical and physical network interface names

Our company planned to move their hundreds of servers (virtual and physical) to a brand new datacenter infrastructure. First, we have created a spreadsheet which lists the configuration of all the ...
1
vote
1answer
98 views

Redirect traffic per domain on cisco 2901 [closed]

I have 2 internet interfaces on my cisco, and i want to redirect the traffic depending of the domain. for example. Interface 1 - youtube, facebook, browsing, etc. Interface 2 - Cloud services, mail, ...
0
votes
2answers
3k views

rpcbind - is there really no way to make the tcp ports bind to a specific interface / can nfs be ran without rpcbind?

we would like to move away from sshfs to nfs. the last thing holding us back is the fact that rpcbind (which i assume is required for nfs to work) does not allow you to specify the tcp (not udp) ip ...
2
votes
3answers
114 views

Executing a software on another network interface?

I have created 3 virtual interface on a Linux system, using different IP. I have a software doing requests to a server but it use the default interface, eth0. Is it possible to execute a software ...
1
vote
2answers
889 views

Openwrt two nic on the same vlan instead of alias?

I have a TP-Link WR1043ND with 1 wan and 1 lan cables attached. The lan cable currently have 2 ips of two different network, using an alias. The two networks share the same switch. I'd like the ...
2
votes
2answers
2k views

GigabitEthernet down/down

What could be the reason a cisco gigabitethernet interface gives status down protocol down and doesn't change this while doing a "no keepalive" on the interface? (nothing connected to the interface). ...
4
votes
3answers
394 views

identify physical network device by interface name in linux

I have multiple USB to ethernet devices which are plugged to the same pc. Is there a way to identify which one is mapped to which eth* network interface via usb port/etc ? I have tried looking in ...
3
votes
4answers
890 views

Get the interface and ip address used to connect to a specific host (ip)

I'm sure this has been asked and answered before, but I wasn't able to find it, so hopefully this will at least link someone to the right place. I want to find out my local interface and ip address ...
2
votes
2answers
290 views

Binding services to localhost and using SSH tunnels - can requests be forged?

Given a typical webserver, with Apache2, common PHP scripts and a DNS server, would it be sufficient from a security perspective to bind administration interfaces like phpmyadmin to localhost and ...
0
votes
3answers
4k views

Failed to bring up eth1 in a dual ips solution in ubuntu

I'm using ubuntu 12.04. I tried to assign two ips to two ethernet cards in my server. The content of /etc/network/interfaces is like this: auto lo iface lo inet loopback auto eth0 iface eth0 inet ...
1
vote
2answers
2k views

Different Mac address to virtual interface and primary interface

I am developing a system, where I need virtual interface to have different mac address for my primary and virtual interface lets say my mac for eth0 is 00:11:00:11:00:11 and my virtual interface is ...