Managing and using network connectivity on a unix system

learn more… | top users | synonyms (1)

0
votes
2answers
5k 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 ...
1
vote
2answers
1k views

ping: unknown host with iptables enabled

I can't ping www.google.com. However I can ping the IP address: ping 74.125.237.142 At first, I thought it is a problem with my DNS settings. But I checked my resolv.conf, hosts, and hostname ...
0
votes
1answer
39 views

Device shown using lspci but udev not loading the driver

My nic shows using lspci -v but udev is not loading the driver for it. Links to screenshots of diagnostic output are below. dmesg insmod lspci pacman -Qi ls /sys/class/net uname -a original ...
1
vote
1answer
39 views

Unix Program (not ab) to create local requests to local server with different IP addresses

I made a module for apache and want to test it across thousands of different IP addresses in a short time. Currently, my only option is to integrate the module onto a live server for which I have ...
1
vote
0answers
43 views

Howto configure linux router to allow clients to use maximum bandwidth?

The problem is that I'm always limited on the final client machine to about 1/3 (one third,about 200/300kb) of the internet hotspot bandwidth when testing download speed with wget. I have configured ...
1
vote
1answer
20 views

How can I run a command on all cliennts at a time from the server that all are connected to NIS & NFS server?

NIS and NFS configured network. 1 NIS server, 1 NFS server, 50 NIS & NFS clients. OpenSUSE 13.2 Need to run a command on all clients from server machine. Command: an installation command on ...
1
vote
3answers
698 views

Check that fail2ban is running?

I just installed and configured fail2ban. I want to make sure it is working. I don't want to block myself from the server so I can't just login (poorly) a bunch of times. How do I see that fail2ban is ...
1
vote
2answers
10k views

How to set up an Internet Connection in Linux Mint?

My machine has wired Internet connection with Windows 7 OS. In connection properties I see service name : ispone obtain IP address automatically obtain DNS server address automatically How do I ...
1
vote
3answers
103 views

How to create a TCP listener?

Introduction: I have created a bash function that is able to check whether a port is available and increments it by 1 if false until a certain maximum port number. E.g., if port 500 is unavailable ...
6
votes
2answers
15k views

Arch Linux not connecting to Wifi anymore

I have been using Arch Linux over a month now. I have used wifi-menu to connect to my Wifi Network. I run the command every time I start my laptop. wifi-menu always gives this error when I try to ...
1
vote
2answers
675 views

How to monitor network performance for each application in FreeBSD / PC-BSD?

I'm using a PC-BSD workstation, and I would like to know if there is a way to monitor which app / process is using the network. I use a Mac OS X (Mavericks) laptop, and the "Network" tab in the ...
1
vote
1answer
773 views

Connect Linux to two networks simultaneously

I want to connect to two networks simultaneously using the Ethernet and in-built WiFi or to two WiFi networks by installing an additional WiFi adapter. My requirement: I have two sets of devices ...
1
vote
1answer
20 views

Is there a way to have netcat listen and place incoming files in a destination directory?

I'd like to use netcat to regularly transfer files to a media server on my network. However, I can't figure out how (or if it's possible) to do something like nc -l 5959 > /media/data/, where ...
0
votes
0answers
38 views

Many Linux commands hang during execution, but system is alive [duplicate]

I can access the system through ssh, but many commands would hang, like the following: # ps axf Read from remote host 172.17.102.22: Connection reset by peer Connection to 172.17.102.22 closed. # ls ...
5
votes
2answers
1k views

Elementary OS shows WiFi networks, but won't connect

In the top bar, clicking the network icon shows a list of networks. My school's network, which on Windows I would connect to, and then visit a login page in Chrome in order for it to work, shows on ...
1
vote
1answer
717 views

How to set up a “child” proxy that doesn't need a “parent” proxy

I run Linux on a laptop that is sometimes on a corporate network which uses an NTLM proxy server, and thus I have cntlmd running on the laptop as a child proxy to connect to the parent (corporate) ...
0
votes
1answer
2k views

Set up network with static IP and wpa_supplicant on Debian

On Debian, I am trying to set up my network to use ad-hoc mode with a static IP address. I also want wpa_supplicant to be running so that I can scan use it to scan for WiFi networks in range. To get ...
0
votes
1answer
100 views

Huawei E3372s + Linux (Rasbian), Incoming connections problem

I have a Linux-based OS (Rasbian) running on Raspberry Pi 2+ and it is using Huawei E3372s 4G/LTE USB Stick for internet connection. All my outbound connections work perfectly (Huawei USB mode ...
1
vote
1answer
23 views

Is there any P2P VPN solution that does not requiere port opening(forwarding)?

The closest to a VPN P2P-based solution that I have found is PeerVPN: really easy to install, but it needs to open one port (7000 TCP by default) on one of the computers (also known as node) that runs ...
1
vote
0answers
22 views

Share WiFi internet over same WiFi adapter

I am trying to share internet through my WiFi adapter which is in use for connection to that internet. While I had Connectify license on Windows, I was able to do so: Internet from: My Wifi adapter ...
1
vote
1answer
35 views

How to Connect Different WiFi interfaces : 1 for external 1 for internal

I've built a Wireless Access point using hostapd and udhcpd. I have 2 WiFi dongles, one is used as wlan0 other is used as wlan1, I connected one of them to internet and other is keeping working as an ...
1
vote
1answer
68 views

Permission denied when trying to access mounted windows NFS

Full disclosure: I'm a complete noob with NFS and have very little idea what I'm doing. After hours of googling, I ended up here. I am trying to mount an NFS folder that I have set up on a WIN08 ...
0
votes
1answer
44 views

Leoxsys nano wifi adapter installation in backtrack 5r3/kali linux 1.1.0

I have leoxsys nano wifi adapter 150mbps using chipset realtek 8188ETV. It works fine in windows but not recognised in backtrack or kali linux via vmware workstation 9/10/11. When i gave the command ...
0
votes
1answer
673 views

How to set up wifi hotspot with 802.11n mode?

I have two computers running Ubuntu 14.04 (ok, one is actually Mint 17.1, but that's based on Ubuntu 14.04), and I am looking to use one as a wi-fi hotspot for the other. Both computers have identical ...
0
votes
2answers
994 views

Route wlan0 to openVPN tunnel and rest to eth0

I'm having problems to create route/iptables rules for following configuration: I have an openVPN server (tun type) running on my raspberry machine at home At work i have company pc (behind proxy) ...
0
votes
1answer
57 views

Why Gentoo detects no network devices? [closed]

I've faced the problem installing Gentoo: after the installation is seems to be completed and LiveCD is extracted, network becomes unreachable: gentoo~ # ping 8.8.8.8 connect: Network is unreachable ...
1
vote
1answer
66 views

Why is setting up WLAN in Debian so hard? (compared to Ubuntu) [closed]

switching from Ubuntu 14.04 to Debian jessie (LXDE) on a ThinkPad T500 Lan (eth0) is configured in /etc/network/interfaces and works fine. After setting up LXDE i wanted to switch to WLAN and it ...
3
votes
3answers
5k views

Auto connect to a wireless network (Ångström Linux)

I am using Ångström Linux on BeagleBoard-xM. I have installed a RTL8188SU USB Wi-Fi adapter and configured it properly. But it doesn't connect automatically even though I have marked the interface as ...
0
votes
2answers
155 views

Ubuntu won't connect to university internet [closed]

My WiFi adapter shows networks in the area, but will not allow me to connect to my university Internet. Normally, on Windows, I connect to the Wifi by clicking connect. It shows it as connected, but ...
0
votes
1answer
56 views

Bridge and iptables postrouting

I have a Linux 3.14 PC with three NICs and a bridge between two of the NICs (eth1 and eth2). My Question Why is there no traffic passing through the POSTROUTING rule? FYI, traffic is passing ...
0
votes
1answer
14 views

How do I allow other physical machines on my LAN to connect to a web server hosted within my local virtual box windows VM?

I am running Windows Server 2008 R2 within Virtual Box v4 with os x 10.6 as my host. Within Windows Server, I am running IIS and I have successfully been able to access my web server with Internet ...
6
votes
1answer
895 views

AP randomly gets unreachable for the clients while hostapd is running

I got an old PC running as router which has 3 NIC and 1 wifi PCI card TP-Link L-WN751ND. This box runs Debian Wheezy, hostapd, dhcpd etc. The problem is that AP randomly gets unreachable for the ...
1
vote
1answer
52 views

Access Point offers itself IP if used as DHCP Server?

I'm trying to use an raspberrypi (OS=raspbian 4.0.7) I had flying around so I researched a little bit and everything seems to work more or less fine. I am using hostapd in combination with an wifi ...
2
votes
2answers
816 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 ...
1
vote
1answer
60 views

Need help setting up networking for KVM on Gentoo with exit to wifi adaṕter

I am running Gentoo Linux on an AMD64 laptop, and I am having an extremely hard time setting up host networking on KVM. I alreay have KVM, libvirtd, virt-manager, the kernel modules required to get ...
2
votes
1answer
3k views

Can I change uuid for network interface in ifcfg-eth* using uuidgen?

I'm creating a script which configuration the network interfaces. The script which generates /etc/udev/rules.d/70-persistent-net.rules and names interfaces to my preference. In CentOS 6.5, my ...
13
votes
1answer
18k views

Good detailed explanation of /etc/network/interfaces syntax?

I understood the very basic concept of how to use /etc/network/interfaces, but all I find online are examples, example after example, which I can copy-paste from. What I miss is an explanation of the ...
2
votes
1answer
53 views

“Network is unreachable”, github, bitbucket is not working

The output of ifconfig eth0 Link encap:Ethernet HWaddr 3c:97:0e:74:43:8e UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 ...
-1
votes
0answers
19 views

My captive portal does not display OS' splash page. How can I do this?

I have created a Wifi access point on my server. I added such configurations: 1. some iptables rules to ensure redirect to a landing page (local web) 2. no ip forward. Machine : linux mint 17+, ...
1
vote
3answers
89 views

Impossible to have two network interfaces wifi and ethernet (as a backup) working together

I have a raspberry 2 with a wifi interface and an ethernet interface. wifi is my main connection with the ability to just plug in the ethernet as a backup method. I want to assign different static ...
1
vote
2answers
720 views

Command/scripts to check the Reverse DNS Lookup time

I am working on a project in which one master communicates with numbers of slaves. For that it has to make connection with hosts in network. But sometimes it hangs. I think that the reason behind is ...
-1
votes
0answers
35 views

kali linux airmon-ng issue

I am new to Kali Linux and I am currently running a VM using VirtualBox and I have selected network adaptor as bridge adaptor and connected it to my external USB WiFi adaptor. I have two problems ...
1
vote
3answers
159 views

Force all network traffic go through default gateway

I have a machine that I want to force all traffic to go through the default gateway. Even traffic on the local network. I have made it to work by removing the auto generated route for this interface, ...
0
votes
1answer
2k 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) ...
0
votes
1answer
592 views

Kali linux network connection icon missing

I was trying to setup a vpn connection in Kali linux but i don't know what did i do that network connection icon (screen top right) is missing and i can't connect to internet! How do i fix it?
3
votes
4answers
24k views

Yum update problems on CentOS 6.5 minimal as VMware guest

INFO: I am using Windows 7 Pro (64bit) with VMware Workstation version 10.0.1 . I am using CentOS(64bit) 6.5 minimal, for the first time. I am running this from my workplace network, which may use a ...
0
votes
0answers
22 views

Internet connection drastically different for users

I am using Fedora 16, I know it's been EOL-ed but I've been too lazy to update and reinstall something new. Mostly, it works fine except that my main user's internet connection is really crappy and ...
1
vote
1answer
682 views

Network fail on FreeBSD: Ping to router fails, but router believes computer is connected

I have a TP-Link TL-WN851N wireless adapter, which is based on an Atheros device. When I attempt to connect to my WPA2 wireless network, ifconfig wlan0 tells me that the connection is 'associated'. My ...
3
votes
2answers
1k views

Open and redirect port

I'm trying to set up SNMP for a router so I can monitor it from an existing Nagios installation on an off-site server. I'm having trouble getting the router to respond to SNMP requests from the WAN, ...
0
votes
0answers
10 views

Trying to get the domain laptop.local to 127.0.0.1 with bind9

Already tried a load of guides but cannot figure it out somehow. I need it so that when I look at one of my webpages through a VM I do have to get the public IP of my laptop every time and so that the ...