A computer network allows sharing of resources and information among interconnected devices.

learn more… | top users | synonyms (1)

2
votes
1answer
34 views

Airdrop compatible

Is there anything in Linux that implements whatever it is that makes Airdrop in OS X work? I'm not really familiar with that program, so I'm not sure what protocol it's using to communicate. update ...
8
votes
2answers
213 views

How can I find available network interfaces?

This is in regard to linux, but if anyone knows of a general *nix method that would be good. I booted a system yesterday with an ethernet cable plugged in. "NetworkManager" is not installed, so once ...
3
votes
0answers
44 views

How to create Virtual Network for VM's

I have downloaded a Linux Live CD which I am required to do pentesting using VirtualBox . Live CD is configured for router with Pool Starting Address 192.168.2.2 . Now problem is that my router is't ...
1
vote
1answer
22 views

Create a VPN network between a live server and private networks

I have a VPS (Cent OS 6) on a live IP. I have several other machines (All linux, mostly Cent OS 6 and a few Android devices) sitting behind NATted ADSL Routers on several sites. I need to create a ...
1
vote
1answer
25 views

What is the meaning “MAC MISSMATCH”? [on hold]

I have every day in the log the few lines start with: MAC MISSMATCH:IN=vlanXX OUT= MAC=ff:ff:ff:ff:ff:ff:bc:ae:c5:da:70:a6:08:00:45:00:00:4e SRC=xx.xx.xx.xx DST=xx.xx.255.255 LEN=78 TOS=0x00 ...
3
votes
2answers
18 views

How to configure Unison for real peer-to-peer?

I have a handful of devices, and am considering keeping them in sync with Unison. The devices are not running all the time, they are switched off a few hours per day, not necessarily at the same ...
5
votes
3answers
295 views

traceroute and ping from school network

I have a server in my school. If I do a traceroute command for some host within our school network, I am able to reach the host. So for example, traceroute hostname.xxx.edu traceroute to ...
2
votes
1answer
16 views

Redirecting Request on Device in Access Point Mode

I have a Raspberry Pi with a wifi dongle that is configured for Access Point mode (wifi hotspot). When a user is connected, I want to redirect any url they enter to a specified IP (the devices ...
4
votes
3answers
59 views

How to configure a computer as a hotspot?

I use OpenSuse 13.1 (with KDE). On my phone I can turn on a hotspot just by pushing a button. I have been researching how to do this on linux, I haven't found an easy way yet. What I want to ...
0
votes
1answer
17 views

How to connect to wifi on a Gnome 2.24.1 system?

A friend gave me an old laptop running Gnome 2.24.1. It's been in storage for years but seems to run fine, albeit with this old OS. Now, I don't know too much about Linux, but I'd like to set it up ...
0
votes
1answer
23 views

Using WiFi port as redundant link

I want to use WiFi port of my server as redundant link for copper connection to my home DSL router. My router if SAGEM 2704 with very limited functionality. So practically the only possibility is to ...
1
vote
0answers
23 views

How can I use iptables to block certain processes from accessing the network? [duplicate]

I can set the processes to run under special uid's and use the technique from this SF answer: -A OUTPUT -m owner --uid-owner 400 -j DROP ...But are there any other ways to blacklist based on the ...
7
votes
2answers
35 views

SSH session through OpenVPN cuts off / locks up after a few lines

I have a large number of identical fanless PCs running debian 6 (ARM). Most of these are connected via comcast and work ok. There are some that are connected to 'WiMax' modems and are having ...
1
vote
0answers
27 views

Why, When and Where is phy used

Reading that iwconfig is deprecated and should be replaced by iw, I was for the first time confronted with phy. I understand that phy0 and so on represent physical devices, and perhaps iwphy # is ...
0
votes
1answer
33 views

What is a master mode? [closed]

I want to know what's the difference between "master mode" and "managed mode" and the advantages of each one !
3
votes
2answers
57 views

ssh from host to guest using qemu

How do I setup ssh from the host to the guest using qemu? I am able to use port redirection when I boot the VM without any special parameters, as follows: /usr/bin/qemu-system-x86_64 -hda ubuntu1204 ...
0
votes
0answers
55 views

no network connection

I am Newbie to CentOS. I have problems with my network connection eth0 I created /ifcfg-eth0 file since it was not present at /network-scripts. I tried ifconfig which does not display eth0. I have ...
1
vote
0answers
11 views

A Way Around: Host Accessing Guest in Internal Network?

folks. I have installed a Linux virtual machine in VirtualBox with 2 adapters: vnet0 is a host-only network and vnet1 is an internal network. I am able to get the IP address given by vnet0. ...
2
votes
1answer
96 views

Redirect requests to my external IP/port to an internal IP/port?

I have a dedicated server running KVM virtualization with n public IP addresses dedicated to n-1 web-facing virtual machines. Now I'd like to set up some web-facing VM's that don't have a dedicated ...
2
votes
1answer
63 views

Arch Linux not picking up static DHCP lease from DD-WRT

I have a Arch Linux system on my home network and its MAC address is setup in my Linksys running DD-WRT to receive a static lease. However, this system is not getting the static lease from the DD-WRT, ...
0
votes
2answers
66 views

How to determine eth0 gateway address when it is not the default gateway?

In my system I have eth0 (which may or may not be connected) and a modem on ppp0 (which always may be up or down). The the case where both interfaces are up and ppp0 is the default route, I'd like to ...
0
votes
1answer
74 views

Masquerade not working sometimes

I have an issue with private network traffic not being masqueraded in very specific circumstances. The network is a group of VMware guests using the 10.1.0.0/18 network. The problematic host is ...
0
votes
0answers
51 views

Ping IP works, nslookup fails. New Kernel

I am compiling my own 3.14 kernel. I fear I may have left out some important networking feature to get DNS working. I can't resolve domain names. I can ping my DNS server. I can resolve using that ...
1
vote
1answer
38 views

Where is my eth0 configuration on Wheezy

I have a perfectly happy Debian Wheezy 7.4 install that sets up eth0 as DHCP. But as I want to set a static IP address for it, I navigate to /etc/network and open up the interfaces file and see the ...
0
votes
2answers
126 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 ...
2
votes
1answer
48 views

Multiplex bash function execution

I created a bash function to "automagically" connect on our switches and retrive their startup-config using the expect command. I have to use expect because this switch does not accept the ssh ...
0
votes
0answers
35 views

linux VM ware + ifconfig

I have linux machine red-hat 6.3 VM machine when I run the command ifconfig -a I see also the interfaces - virbr0 and virbr0-nic what I want to get is only the interfaces eth0 and lo without ...
1
vote
0answers
38 views

Kernel optimiziations for ioctl AF_INET operations

Our server solution handles many tunnel operation requests (add/update/delete) using the ioctl interface, and the AF_INET address family socket. Aprox. numbers are 100 operations/minute with over 8k ...
3
votes
1answer
36 views

how to write a startup dependency on Internet availability?

Some of the services on my Raspberry Pi (~ Debian) depend on the availability of Internet (especially ntpd, for cryptic reasons). Specifically, the availability of a network device or a link being up ...
0
votes
0answers
19 views

Ubuntu + CISCO VPNC CLIENT for my new ubuntu version (32 bit )

I have newest Ubuntu Linux version 10.04.4 (32 bit ) I want to install Cisco VPNC client on this linux machines in order to connect to other customers I little confuse , which VPNC cisco version ...
1
vote
1answer
33 views

iw: what's the default channel bandwidth?

I'm using the iw tool to configure a WiFi interface to sniff the air (monitor mode) on specific channel: ifconfig wlan0 down iw dev wlan0 set channel 1 iwconfig wlan0 mode monitor ifconfig wlan0 up ...
1
vote
2answers
57 views

Why is my BCM43142 chipset is not recognised and device wlan0 not found?

I'm trying to setup the WiFi connection on my Lenovo B590 but I get the following error : ifdown: interface wlan0 not configured wpa_supplicant: /sbin/wpa_supplicant daemon failed to start ...
1
vote
1answer
31 views

IP address of a mounted network directory

I have mounted a network directory to /mnt/svr with the following fstab configuration: # <file system> <mount point> <type> <options> <dump> <pass> ...
2
votes
1answer
23 views

How to handle DHCP on two network interfaces, one clobbers the other's /etc/resolv.conf

I have an embedded Debian Linux system. It has two network interfaces, eth0 and ppp0 via a cell modem. The problem I have is that when the system boots up it gets an address via DHCP on eth0. If ...
1
vote
2answers
19 views

Retrieve value of RTS threshold without iwconfig

Is there a way in OpenWrt to read the current value of the RTS threshold for a specific interface without installing iwconfig? What I'm looking for is the value of RTS thr that can be found in the ...
1
vote
1answer
59 views

How do I restart the network or ask the system to seek a refresh IP from the DHCP?

I'm running a Minix using VirtualBox. Minix is set to use the DHCP. And the network adapter is using a bridged connection*. When I last saved the state of the machine its IP was 192.168.1.11 ...
2
votes
2answers
34 views

Different sites on different interfaces using link aggregation

I read about Ubuntu Bonding and how it allows to bond multiple connections to get several advantages. My requirements is this : I want two different interfaces at a time (A wifi and other Ethernet) ...
3
votes
1answer
23 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.
1
vote
1answer
20 views

How to use one nic for storage traffic & other for network traffic in Linux(Slackware)?

Problem I have a Linux machine (Slackware) with two network interface cards and i want to use one interface for network traffic and other for storage traffic . As this is Slackware i dont know this ...
5
votes
4answers
219 views

History of IP addresses that accesed a server via ssh

It has come to my attention that a server of mine has been hacked and infected with a known chinese botnet. It was a prototype/testing virtual machine with its own static IP(US address) so no harm ...
2
votes
1answer
50 views

CentOS 6.5 have to manually add the default route

With CentOS 6.5 on an R710 I have to manually remove the default route; and sleep 10 before adding it back otherwise the interfaces do not use the default route that was added upon boot. There are no ...
0
votes
2answers
26 views

Route add gw: how to

I'm in a network with IP 10.0.1.X (pc A). There's another sub-network: 10.0.3.0 I can ping pc B connected to this network: ping 10.0.3.X ---> OK Now, B is connected also in wifi to a network ...
1
vote
1answer
43 views

Dynamically change /etc/hosts

Each time I change my IP address I have to go edit /etc/hosts and change the line: myPc-Vaio 192.168.1.x I need this change for some programs I am using, so I can't just set the line to 127.0.0.1. ...
0
votes
1answer
32 views

Why won't my computer connect to my Linux access point?

I'm setting up a Raspberry Pi as a proxy access point which accesses the internet via my USB tethered smartphone and is connected to my Windows PC via Ethernet. The internet works fine on the Pi, but ...
0
votes
1answer
30 views

How kernel allows a process to receive network data that do not belong to it? [closed]

Each process is assigned with port number when using network resource. A process can only send and receive network data from its assigned port number. How kernel allows security programs like IDS, ...
0
votes
1answer
73 views

Does an in-kernel firewall sit between the network access layer and Internet layer?

This question is a follow-up to my previous question. Logic for me to says that an in-kernel firewall sits between the network access layer and the Internet layer, because it needs to have access to ...
0
votes
1answer
21 views

Solaris 10 IPMP and zones

Is there a way to have an IPMP group Virtual IP only be assigned to a none global zone ? The reason I ask is the need to reduce the number of IP addresses, as we only have so many spare. If I have ...
3
votes
1answer
48 views

limiting a user's TCP transfer quota

I've been researching how to limit a user's monthly TCP download plus upload quotas. The total transfer limit is 1 TB / month . There are 50 users, so I wish to limit each user to a maximum of 20 GB / ...
3
votes
1answer
71 views

How security programs like firewall, IPS and IDS have access to network data?

It is said that kernel responsible for the transport, internet and network access layers for a network data. Then, the network data is passed on the appropriate process based on port number. How ...
2
votes
1answer
43 views

How do I create an IPv6 overlay network?

I would like to create host-only IPv6 networks on two hosts and then route between them. On each host, there will be a dummy interface, at ipv6_prefix::9. I would like to be able to ping that ...