Managing and using network connectivity on a unix system

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KVM Disk Image File Path openSUSE

I need to enable networking for my guest KVM Windows 10 VM under openSUSE Tumbleweed host. I need the default file path for the virtual disk image as per here. Running the following command: ...
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1answer
971 views

Using ping on multiple interfaces on a NIC

I have two systems and each have a NIC with two ethernet ports. One system has a verified NIC card, but the other has a NIC which has to be verified. I use ping to verify whether the interfaces on ...
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2answers
749 views

Need to add virtual interface in Suse Enterprise Server edition permanently

How can I add virtual interface in SUSE Linux Enterprise Server 11 permanently?
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1answer
592 views

redirect web server with no-ip and port forwarding in livebox

I want my Apache web server running on a Livebox (home router appliance running Linux) to be accessible from the Internet (WAN). I installed and configured the application noip2 on my Ubuntu PC. ...
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13 views

How do I measure the amount of network traffic that passed my debian installation?

So my raspberry pi is acting as a Router and Web/Mail/FTP/SQL/Media/Clash of Clans/Home server right now and I'm looking for a way to monitor the consumed bandwidth, much like NetWorx for windows. I ...
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12 views

connman connections extremely flaky and slow

I'm trying to configure my system to be able to connect via either ethernet or wifi with connman. I was able to hotplug my ethernet with systemctl restart dhcpcd.service previously, but I'd like to ...
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9 views

Route everything through VPN except SSH on Port 22

I have a Server and I want to setup a VPN on it to route all traffic. Of course I dont want to block myself out when establishing the OpenVPN connection (already did that..) so I want the Port 22 to ...
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21 views

traceroute / mtr from multiple locations, How can we do it ? (Or alternate way)

I have a website, recently due to some network issue, Most of my customers are reporting slow loading time of my website. When I reported this to my DataCenter, they are asking me to send the ping / ...
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39 views

Ethernet only works when PC booted with cable plugged in

My Ethernet adapter is Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06) and I'm using x64 Arch Linux, kernel 3.18.4. Connections are managed using ...
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1answer
37 views

ss is replacing netstat, how can I get it to list ports similarly to what I am used to?

I've been trying to modernise my way with Linux by, for one thing, ditching netstat for ss. I looked up my favourite command line flag for netstat in the ss man pages, and was very glad to find that ...
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1answer
7k views

What does the eth0 interface name mean in Linux?

What do the Linux interface names mean? eth0 eth1 wlan0 My current assumption is that when we are connected to the Internet via LAN cable it's eth0 or eth1 and when we are connected with internet ...
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1answer
12 views

iptables: route packets to example.com via public proxy

I want to access certain websites via a public proxy and I can't seem to get it right using iptables. Let's say I want to access example.com having ip address 1.2.3.4 via a public proxy at ...
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1answer
14 views

How to setup 2 NIC PC with a DHCP server on one NIC and LAN on the other. Ubuntu

So I have a networking setup I need for a project. On one of my NICs I need to have a DHCP server. I've found for ubuntu there exists dhcp3-server for a dhcp server. I've done a bit of research, I ...
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40 views

How can I switch between “wl” and “b43” wifi modules without rebooting?

If I restart my computer with the following in /etc/modprobe.d/blacklist.conf: blacklist b43 blacklist ssb blacklist wl Then I can either modprobe wl (broadcom STA, works well) or modprobe b43 ...
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1answer
28 views

ifconfig made my server unreachable

I just got a second IP address for my Debian Squeeze root. I tried to add the address to my network but somehow I messed up. The command I executed: ifconfig eth0 [new ip address] mask ...
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36 views

Sharing a LAN printer over a subnet [Gnome-Shell] [SOLVED]

Two scenarios for you: ROUTER1 / \ / \ PRINTER DESKTOP1 [96.96.96.10] [96.96.96.11] ROUTER1 / \ / \ PRINTER ROUTER2 ...
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How to use tshark or tcpdump to calculate bytes transmitted

I am using this command with tshark: tshark -r pcapfile "tcp and ip.src==192.168.1.1" -T text -V -x | grep 'Total Length' This essentially parses the pcap for only connections from the source ip and ...
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2answers
1k views

Split DNS (bind9), match-clients any doesn't work?

I've been fighting with this for the last few days. A few of my entries have external and internal IP's. My internal network is 10.0.0.0/8. When I nslookup pc1.clase.net internally it responds with ...
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3answers
1k views

Using multiple NICs for faster internet?

My laptop have a ethernet card and a wifi card. Ethernet line have maximum download rate at 1.5MiB/sec and wifi is over 1MiB/sec too, but it seem only have one NIC can working at a moment (if I turn ...
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6 views

Spoofed mac resets to default when connects to network

I'm trying to change the mac address of the wifi card. I tryed with both ip link set wlan0 address XX:XX:XX:XX:XX:XX and macchanger, and I'm able to change it, but when NetworkManager try to connect, ...
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2answers
56 views

How to make Raspberry Pi to receive an IP from a router and also pass another IP to another device?

I know that I could achieve the desired result with an Ethernet switch, but I'm curious if I can get this with some cheaper solution. The idea is as follows: Rapsberry Pi has two Ethernet ports - ...
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1answer
28 views

How to install software on to multiple linux clients

Is there any free way or method for ssh that could be used to install and update linux clients for a ubuntu laptop. I do not have password less ssh but the admin password is the same for all of the ...
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How do kernel inform OSPF daemon when a physical interface status is down?

When a physical interface status is changed from up to down, there are 3 things related to the computer's current routing table and OSPF. The (connected) network for that interface and remote ...
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MAC to MAC MII interface not working

I have a MAC to MAC MII interface between MPC8569 processor and BCM68610 controller , whose schematic design is followed from here. My linux kernel version is 2.6.32. I want to ping one device from ...
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2answers
31 views

Why do I have so many IPV6 addresses for a single ethernet card

Output of running ifconfig on my system is: eth3 Link encap:Ethernet HWaddr 44:8a:5b:93:34:25 inet addr:172.32.17.71 Bcast:172.32.17.255 Mask:255.255.255.0 inet6 addr: ...
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2answers
1k views

What is the simplest way to connect to wireless on a Debian system with nothing but essential?

I have a Debian Jessie system which, for reasons unrelated to this question, has nothing installed but the set of essential system packages. What is the simplest method for connecting to a wireless ...
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network connection issue with Ubuntu installed on VM player

The Ubuntu was installed on Windows 7 using VmWare Player. However, the internet cannot be accessed from Ubuntu. The Windows host works fine with internet. Examining the "Network and Sharing ...
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27 views

ipsec-tools can't encrypt packets after changing destination ip address?

I established a tunnel IPsec connection between two networks like the following scenario IPsec-tools and racoon and it works fine (see image) But in gateway1 I run a simple program that listen to ...
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2answers
42 views

dhcp without dns: ping `hostname` not working. Auto add hostname to /etc/hosts?

On RHEL 6.5 how to make my own hostname locally resolvable, if my ip address is dynamic and not registered in DNS? I know, it's possible to add dhcp hook scripts. Is there a similar way to hook the ...
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3answers
7k views

Mounting Directory - Connection Refused

I am trying to mount a Directory from my server to my local machine. This is because I want to edit the directory and execute the files without having the manually push the files to the server after ...
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1answer
19 views

Access network of PC2 from virtualbox installed on PC1

I am going to attend one seminar where I need to bring laptop with installed Virtualbox and Windows 7 running inside it. My laptop is too old to handle Virtualbox with Windows 7 and native Linux ...
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why cisco VPNC work on the second time each time and not on the first time

I use the vpnc ( cisco VPN that installed on linux red-hat 6.X ) and the vpnc.conf file look like this more /etc/vpnc.conf ## generated by pcf2vpnc IPSec ID Comvwde IPSec gateway 217.118.6.7 ...
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1answer
556 views

Arch Linux Ethernet to WiFi bridge

I want to use a Raspberry Pi running Arch Linux to extend my WiFi network. My situation is that I have a spare WiFi router that I want to use to expand my WiFi reception range as well as give me a few ...
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2answers
9k views

Cloned Linux system and /etc/udev/rules.d/70-persistent-net.rules

I set up an Ubuntu system and configured it properly, including defining eth0 in /etc/network/interfaces. I then imaged that system and cloned it on a new system. When I booted up the system the ...
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3answers
3k views

Configure multiple interfaces with different hostnames using DHCP and DNS

I have a machine running Ubuntu 12.04 Server with two interfaces connected (eth0, eth1) to the network. Our network is set up so that a FreeBSD based DHCP server hands out leases and registers the ...
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1answer
108 views

Trouble switching from DHCP to a static IP on Kali Linux

When I installed Kali Linux 64bit, I forgot to set up a static IP address, and now DHCP determines my address with my router. I have already modified /etc/hosts and /etc/network/interfaces to declare ...
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1answer
1k views

Consistent network interface name ubuntu using pci slot

One can set consistent interface naming via mac address by modifying /etc/udev/rules.d/70-persistent-net.rules. Can you establish consistent interface naming by PCI slot number? (I tried but failed) ...
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1answer
34 views

Remove IP address from interface with VLANs

On Arch Linux, I have a single physical ethernet interface on 2 VLANs (3 and 7) with static IP addresses for the VLANs and a DHCP address for the 'main' ethernet interface. Is there a way for me to ...
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0answers
34 views

debugging iptables when tunneling one VPN through another

I seek to tunnel one SSL VPN (F5, running on my debian laptop==client) through another (OpenVPN, running on a debian linode==server), but lose all client networking (including, e.g., ping) after the ...
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2answers
630 views

keep losing IP with dhcpcd

I have an Arch Linux install in a VirtualBox VM, and as I'm working all of a sudden, it will lose it's dynamic IP address. When this happens, if I check on the status of the dhcpcd service it says ...
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1answer
48 views

Workstation-like environment across Debian clients

At our university we have a workstation-like system. It's windows XP (or Win-7 on some machines) and you can sit to any computer and log in with your credentials. It seems to be pulling some of your ...
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1answer
3k views

Setting up hostapd with a iwlwifi device to run a hotspot

I am trying to configure my opensuse 13.1 system to function as a hotspot (on my dell xps13 computer). So I tried setting up hostapd as explained here, but I get an error: hostapd ...
3
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1answer
49 views

Strange ip command output

When I call ip addr show I get output with all interfaces and their IP addresses (look at eth7): 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback ...
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1answer
54 views

Service network restart same as ifup and ifdown?

Can service network restart take place of ifdown and ifup? I was managing my server the other day using SSH and I changed my internal IP from DHCP to static. After editing the config file I had to ...
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How to create a wireless-to-ethernet router?

I have a Debian machine, which I want to turn into a router. It will connect via wireless to a access-point, where it will get an IP. To its ethernet port, other machines will be connected. It will ...
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0answers
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delay in IP route deletion

(Apologies if this is the wrong StackExchange for this question, but there does seem to be some confusion regarding appropriate targeting of IP networking questions) I am very much a network newbie, ...
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0answers
19 views

Connect OpenWrt router to home wifi AND open wifi

I've noticed I'm within comfortable wifi range of a nearby coffee shop's open connection. I have an OpenWRT router that I'm not using, and thought it might be handy to have this connected to my home ...
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2answers
4k views

D-Link DWM-156 HSPA USB Modem doesn't work with SIM card inserted

I have a D-Link DWM-156 HSPA modem, that I bought just a few days ago. The modem has drivers in its internal storage. There are Debian packages (.deb) for both i386 and amd64, so obviously I installed ...
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29 views

How to measure network traffic (with pfSense/freeBSD)?

Is it possible to measure network traffic (per month, per WAN, per direction) with pfSense/freeBSD? There are following programs listed ...
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19 views

How can I log outgoing TCP traffic including the full path of URLs?

I use a program regularly on Linux that makes a TCP request when it starts up and updates a file with an access token before launching. I'd like to write a batch script that makes this request (using ...