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Questions tagged [interface]

333 questions
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Do newer physical interfaces make a better linux firewall?

At work we use an old (10 year old) linux box with 4 interfaces to act as router/firewall for the network. There's never really been a need to change it since it's stable and handles all our needs. I'm wondering, though, would replacing the network…
pfyon
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Writing to /etc/networking/interfaces at boot using sed/awk?

Newbie here, I'm trying to write to an auto-generated /etc/network/interfaces file of a newely provisioned XEN Ubuntu (12.04/10.04/8.04) DomU server at boot time using (currently) sed. The auto-generated file is formatted as below: auto eth0 iface…
Colin
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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). Interface IP-Address OK?…
Bulki
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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 access it via SSH tunnels? Or could somebody, who…
Martin
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How to convert a local socks server into a local interface?

Exist a way to convert a local socks proxy into a local interface? My problem is that some application don't have the possibility to specify a socks proxy, and I need that all my communication pass through my local socks proxy.
user120858
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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 eth0:0 by default eth0:0 have mac address…
sanketmlad
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Create and bridge virtual network interfaces in Linux

I have a tool that replays traffic from a .pcap file and another tool that interprets that traffic. For testing purposes, I need to play traffic out one interface and have it come in another. Obviously I could simply attach a crossover cable…
Rauffle
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Setting a static DNS nameserver (Debian Squeeze)

I have a gateway running on Debian Squeeze with 2 network interfaces, one static (internal, eth0) and one DHCP (external, eth1). I have an internal DNS server that I want the gateway to use. In my /etc/network/interfaces, I have eth0 set to static,…
Ian Unruh
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Virtual interfaces with default routes

My Ubuntu Server has one physical interface eth0. I want to assign 3 ip's (different subnets) to the server. I cannot use the default virtual interface creation tools like ifconfig or ip addr add (e.g. eth0:0) because for each of those 3 ip's I need…
nixnotwin
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Networkconfig on Debian-based Linuxes

Question: I've some Debian or Ubuntu based servers here with allow-hotplug eth0 and some with auto eth0 in /etc/network/interfaces. What is the difference between them? If I'm correct, both are bringing up the interfaces during startup and if a…
Thomas Deutsch
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ip over specific network interface

I have two network interfaces with respective ips eth0 : 192.168.70.153 eth2 : 192.168.70.155 when I make route -C Kernel IP routing cache Source Destination Gateway Flags Metric Ref Use Iface 192.168.70.155…
JuanPablo
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SAS vs SAS2 interface

I´m pretty new to this server environment and I´m looking to expand the capacity of our HP Proliant DL385 G2 server. I want to replace the 146 GB disks with 300 GB disks. My question is: Can I use a SAS2 disks instead of SAS?
Stulli
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how to configure modprobe to recognize newly installed driver for eth1 on bootup?

I have a server running Debian 6. My motherboard has two interfaces, eth0 and eth1. Debian does not have a driver for eth1 (e1000e), so I installed the driver provided by Intel (e1000e-1.4.4). After compiling it into the kernel, I used rmmod…
Aco
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Linux router with 4 NICs not working

I'm setting up a Linux based router, with 4 NICs, and I can't seem to convince it to work, despite following steps suggested on various web sites. Each interface is on a separate subnet as follows: eth0 10.1.0.254 (255.255.255.0) eth1 10.1.1.254…
Bryan
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eth0 doesn't start after interfaces modification

Just installed Ubuntu Server 10.04 on VMWare ESXi 4.0.0 (201167) and changed the interfaces file. My (modified) interfaces file looks like this: auto lo iface lo inet loopback iface eth0 inet static address 192.168.254.159 netmask 255.255.255.0 …
Mr Shoubs
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