Managing and using network connectivity on a unix system

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1answer
37 views

Set an IP in Centos for access in SSH when connected through WiFi

I recently installed CentOS 7 on Virtual Box with a minimal installation, and I have enabled the network interface in order to show my IP and access to it through SSH when connected by an Ethernet ...
2
votes
1answer
58 views

Problem using GSM USB modems on HP Pavilion laptop

A week ago I migrated from an old PC running Ubuntu 11.04 to Laptop running Kubuntu 16.04. I am having problems using USB modems on the new setup. 1st modem is a ZTE. This modem intermitently loads. ...
5
votes
1answer
77 views

Why doesn't rate limiting with trickle work with ruby?

I'm attempting to limit the bandwidth available to a running ruby process to prevent it flooding our link and affecting other traffic. The process is downloading large files over HTTP. I've found ...
3
votes
2answers
135 views

WPA supplicant dropping/disconnecting NIC in hotel wifi

TL;DR WPA Supplicant intermittently fails on my Raspberry Pi 3 when using a USB Wifi dongle. It appears to do this when "reconnecting" to or changing access points in the hotel. WPA GUI states: "...
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0answers
42 views

Persistent network namespace configuration

When creating a namespace with ip netns add <namespace> the namespace and it's related config is deleted on reboot along with created interfaces like veth pairs. What is the correct way to: ...
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0answers
47 views

Set up a preferred network interface on Debian/Raspbian

I have a Raspberry Pi that is connected by Ethernet to DSL (eth0) and I also have some 3G/4G dongles that I am testing for fallback, in case the RPi loses the wired connection. In other words, I would ...
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0answers
34 views

Beagle Bone Black not retaining static IP

I have a Beagle Bone Black to which I have assigned a static IP. My interfaces file is as follows. auto eth0 allow-hotplug eth0 iface eth0 inet static address 172.16.41.226 netmask 255.255.255.0 ...
3
votes
3answers
259 views

How to host a website on personal computer

I want to start hosting my website at my own computer as well websites of my friends too (say mini hosting platform). I learned Debian, Bind9 and Apache for this purpose. On my system everything is ...
3
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2answers
2k views

How can I Forward a subDomain to a specific port?

My apologies if this has been asked before. I haven't found an adequate solution so... yeah. When a specific domain, "example.com" is accessed, I want it to act normally. In other words, it should go ...
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0answers
22 views

How can I set up my ethernet on a fresh install of Fedora Server 23?

I am using Fedora Server 23, and cannot get my ethernet connection to work. It works fine on Ubunutu, OS X, and Windows 7 on the same machine. [root@localhost etc]# ifconfig ens5: flags=4163<UP,...
2
votes
1answer
46 views

User mode linux eth0 connected to host tap ethernet device not coming up

I am trying to setup the network between UML instance running on ubuntu as host. UML--eth0-(192.168.0.254) ----------------tap0--(192.168.0.253)--VM But, I am not able to bring the eth0 device in ...
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22 views

Cannot connect to WiFi network using /etc/network/interfaces

I'm trying to connect to a WEP WiFi network using only the /etc/network/interfaces file: auto lo iface lo inet loopback auto wlan0 iface wlan0 inet dhcp wireless-essid mySSID wireless-key ...
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0answers
97 views

Simulate ethernet cable unplugged on a remote machine while staying connected

I am working from home on remote embedded Linux machine "X" via ssh. It has one physical network card. I need to simulate Ethernet cable unplugged condition on the same remote machine "X" , while ...
3
votes
1answer
793 views

Apache Request Hangs For 2 Minutes Exactly

I am experiencing some odd behavior with apache. I have requests that are hanging for exactly two minutes. The request could be one file one time, and then a completely different file another time. ...
1
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0answers
143 views

Unable to start apache

I'm running CentOS7 in virtualbox on a mac (osx 10.9.3). Ultimately, I want to access the website on my Guest VM from my Host. I can Ping and SSH to VM but I can't access the webpage when entering ...
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0answers
112 views

Accessing CentOS7 server from public

recently I switched to CentOS 7 OS and set up basic webserver with Apache. I had no problems configuring SSH, FTP and LAN access to the webpage. But accessing from other IP's won't work. I'm 99% sure ...
11
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6answers
34k views

How to find the IP address of a KVM Virtual Machine, that I can SSH into it?

I have follow this guide (Virtualization With KVM On Ubuntu 11.10) to setup my KVM (Virtual Machines Software) on my Ubuntu 11.10 Server. However, I didn't setup my VM's IP address when creating the ...
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2answers
57 views

How to determine what IP addresses are available in a hosts table?

I'm working on a script that will read from the /etc/hosts file and determine what IPs are available in the hosts file. The way the hosts file will look is as followed: 172.17.164.2 System1 172.17....
1
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1answer
35 views

Searching for a solution to set up a reverse proxy for game servers

I run a game server on my dedicated box in country A, which runs Linux and communicates with its clients using UDP. The server has players from both inside and outside Country A. Players within ...
0
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1answer
28 views

How can I boot ubuntu from external Hard disk drive which is connected to Raspberry Pi

I have Raspberry Pi 2 which runs on Raspbian OS and External HDD is connected and mounted to it. It is connected to local server. I have a laptop and I want to boot Ubuntu from External HDD which is ...
4
votes
2answers
5k views

Cannot access to web server, but can ssh to it

I have a Ubuntu server but there are some weird things I can't understand. I cannot ping to the server via IP address, but I can ssh to it. I can access to apache server inside the server via command ...
-1
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1answer
75 views

How does Google know that I've got an old version of Chromium? [closed]

I use the Chromium web browser, and when I visit google's home page (www.google.co.uk), I get the message "We've detected you're using an older version of Chrome. Update to stay secure". The message ...
0
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1answer
78 views

Public HTTP/HAProxy server also is a VPN… should it do both?

I have a HTTP/HAProxy server. It also is the OpenVPN server for my network (all my servers are connected to it). I expect my website to grow dramatically soon, so I am worried if this single point of ...
0
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0answers
78 views

How do I get a yum repo to work in a Docker container?

What do I do about two Docker containers on separate VMs that have the same IP address on my network? I have two CentOS 7.x servers. Both have exactly one Docker container. When I use ifconfig, the ...
5
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2answers
654 views

How can I use Linux as a Gateway?

NOTE: If client devices (computer B in this example) want to obtain internet through the gateway computer, maybe they still need to configure nameserver resolution. This is not explained here (a ...
2
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0answers
51 views

Why would all our CLOSE_WAIT connections have 24 bytes in the receive queue?

We have an Apache reverse proxy that is having connectivity issues with the back-end. This results in timeout errors such as this: [Thu Apr 21 12:12:26.031207 2016] [proxy_http:error] [pid 64620:tid ...
3
votes
1answer
45 views

How do I configure Docker containers to have unique IP addresses that are not the default ones?

How do I configure Docker containers to have unique IP addresses that are not the default ones? The Docker containers will run Apache or some web service. These Docker containers will share one host ...
1
vote
1answer
24 views

How do I configure VirtualBox snapshots running server processes to restore correctly?

I'm running VirtualBox 5.0.20 on an OS X host. There's a variety of guest systems, including Ubuntu, CentOS, Windows and OS X. For each of these systems, I created a live snapshot (i.e. while the VM ...
29
votes
3answers
10k views

Is it possible to connect to TCP port 0?

Listening to TCP port 0 allocates me a free port number on the system. But what happens when I try to connect to TCP port 0? The obvious answer is: "It doesn't work": $ nc localhost 0 ...
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0answers
32 views

Enabling brcmfmac driver for Wifi on a Macbook Pro

So I'm trying to install Void Linux on my Macbook Pro however it doesn't appear to come with the brcmfmac module. There are a bunch of .bin brcmfmac files in /usr/lib/firmware but nothing in /usr/lib/...
4
votes
2answers
10k views

No wired ethernet connection

I'm using elementary OS (based on Ubuntu 12.04) and yesterday I woke up to no wired ethernet connection. As far as I can remember I changed absolutely nothing, it was working at night and not anymore ...
6
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2answers
4k views

What is the interface scope (global vs. link) used for?

Routing table entries have an attribute scope. I would like to know how the change from global to link (or the other way round) affects the network system.
0
votes
1answer
36 views

High time until SSH asks for password

I've been noting recently that any host that I ssh to in LAN, waits like 5 seconds before asking for password. ping sometimes also waits, but less(like 2 seconds), but it shows it has resolved the ...
1
vote
1answer
38 views

TP-LINK TL-WN722N weird behavior

I tried using the TP-LINK TL-WN722N wifi adapter with my fresh Arch Linux installation, but it has a really weird behavior. In my house, I have 2 access point, from which one is easily accessible from ...
1
vote
1answer
117 views

Connecting to wifi network with captive portal login page using wpa_supplicant

I am currently trying to connect to a BTWi-fi / BT_Openzone unsecured network in my office using my pcengines apu1d4 running debian 8.4 with edimax ew-7811un wifi dongle. When conventionally ...
3
votes
1answer
73 views

Which process sent data out of my computer?

Using vnstat, I observed a lot of uploaded data from my computer and I don't know which process sent data out of my computer. Is there a tool to get stats on how much data a process consumed during a ...
0
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0answers
23 views

Configure “Link-Local Only”

I have a workstation running Linux seus and I want to link it to a network storage NAS ( WD cloud ex2 ultra) via a link-local only using the ethernet port on the motherborad ( connect directly the ...
5
votes
4answers
249 views

Is there a way to find self's dynamic public ip address using cli in Debian? [duplicate]

The easiest/simplest understanding of the web is a. When you connect to your ISP, the ISP gives a dyanmic address (like a temporary telephone number) only for the duration of that connection, the ...
3
votes
1answer
42 views

Unable to access internet after making ip static in beaglebone black

I am newbie in Beaglebone black. I am trying to make my IP static in my Beaglebone black. For this I follow this tutorial. After making changes according to tutorial, my /etc/network/interfaces file ...
3
votes
1answer
1k views

Umount network drives with systemd before shutdown

My shutdown takes quite a long time (I'm on Debian 8.1) and I found out that it can be fixed by unmounting the network drive before shutting down the system. Apparently the network gets disconnected ...
0
votes
1answer
45 views

How to host a website on kali linux virtualbox machine? [closed]

I have a puzzle, shown here: http://imgur.com/a/ijyPf. How do I host my website on a Kali Linux virtual machine? How do I access my website with my public IP? I just don't know where to start and ...
20
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4answers
32k views

Can I create a virtual ethernet interface named eth0?

I am running Arch based on the Linux 3.10.5-1 kernel. The system uses the new de-facto naming conventions of ethernet interfaces enp*s* and wlp* etc. This is a problem however, as my educational ...
0
votes
1answer
31 views

How to determine if it is a fault of the Network Card?

Basically, I have a PC having problems. Let's call it POO. POO is a pc running Gentoo Linux, with KDE. It is quite freshly setup on an old hardware. So far I do not notice it has other problems, ...
0
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0answers
49 views

How to configure internal network card to use with VmWare and Kali Linux?

I have heard that now it is not necessary to use an external wifi network card in order to use with kali linux over VM Ware, is it true ? So, How to configure my internal network card in Kali Linux on ...
0
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0answers
22 views

Wep authentification fails with netctl

When trying to connect to a network protected by wep on my laptop I get the following error: Wpa association / authentification failed for interface <interface> I have the latest version of ...
6
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4answers
6k views

Trying to connect to gateway in static ip network

I have arch-linux-arm running on a raspberryPi. The network I am in uses static IPs. gateway IP is 192.168.178.5 IP for my device is 192.168.178.201 To connect to the internet I use: ip addr add ...
0
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1answer
32 views

SSH - How To Make Three Computer Tunnel?

ComputerA connects though putty to Server at port 77, and there is a reverse tunnel set up from the Server at port 6666 to ComputerA at port 22. ComputerA also has a ssh server set up with a user ...
2
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1answer
26 views

CentOS requires root pw for network pref changes

Why does CentOS require root privileges to configure the preference panels? It seems like sudoer access really should be sufficient for this. Is it possible to change this?
5
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2answers
4k views

How to connect two computers via internet with ssh?

I want to connect another computer via internet that doesn't have a public IP. Is there any away to do this?
2
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2answers
65 views

Static IP configuration on openSUSE

Long-time Windows user here -- this is a beginners question, network-configuration (especially on Linux distributions) is not my area. I believe I've done my research, however. Although I might've got ...