0
votes
1answer
32 views

What is a master mode? [on hold]

I want to know what's the difference between "master mode" and "managed mode" and the advantages of each one !
-2
votes
0answers
9 views

How can I use hostapd and scan the wireless interface at the same time? [on hold]

When I run hostapd in a wireless interface I cannot use the same interface for scanning networks.
1
vote
0answers
9 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. ...
0
votes
2answers
61 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
0answers
44 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 ...
0
votes
0answers
34 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 ...
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
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 ...
3
votes
1answer
20 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
19 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 ...
2
votes
1answer
42 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 ...
0
votes
1answer
53 views

Linux Centos 6: Restart Network Service after lost ping

My OS is Linux Centos 6. Restart Network Service after lost ping Basically, I need a watcher or a script that will detect no ping to/from another ip address and run service network restart after ...
0
votes
3answers
42 views

iptables rules - input and output

I'm new with Linux and iptables. I have a Ubuntu Server distro (12.04) on a PC which has 2 network interfaces (eth0 and eth1). I also have 2 laptops, one is plugged to eth0 and the other to eth1. ...
1
vote
0answers
32 views

Which filter configuration in kernel rate limit the outgoing packets to 1packet/sec?

Which net filter in kernel configuration other than iptables enable rate limiting on the outgoing packets on ethernet port?
4
votes
2answers
188 views

check if interface eth0 is up (configured)

I need to check with a script, whether eth0 is configured. If so, the script will do nothing. Otherwise it will start wlan0. (I don't want both eth0 and wlan0 to be up at the same time). What would ...
-1
votes
2answers
23 views

how to get the return value of wpa_supplicant?

My question is really simple I want to get the return value of the command wpa_supplicant, when connected to the internet, to know that I am connected or not with a shell script.
1
vote
1answer
41 views

Can I mirror lo as eth0? [closed]

Is it possible to make eth0 point to lo? I have dumb process that keeps acting as eth0 exists while it doesn't.
1
vote
0answers
23 views

udhcpc starting before PHY is up

I'm having a issue with my Ethernet PHY not being up before eth0 tries to get an IP address This is my etc/network/interfaces # Configure Loopback auto lo iface lo inet loopback # The primary ...
1
vote
1answer
78 views

How can I know if a network is password-protected before connecting to it?

What command can I run to determine the security of a wireless network, without needing to connect to it? I want to know if it needs a password to connect or if it's a public network without security. ...
2
votes
2answers
47 views

change eth0 to eth1 without udev

I have very interesting issue, We have Redhat 4 Linux and it is has 4 Ethernet interface. eth0 eth1 eth2 eth3 Now only eth0 is connected to LAN and everything working find. We have special software ...
5
votes
1answer
118 views

Cannot connect to any localhost connections

I'am using Centos 6.5 with latest updates. My problem is that whenever i try to connect to some local service it just hangs for example: wget wget 127.0.0.1 --2014-03-11 12:43:42-- ...
2
votes
1answer
36 views

Network connectivity problem - Debian 6 server

I'm having a problem with a Debian 6 server where it looses network connectivity and doesn't come back (server does not respond to pings, and can't connect to any services). The problem happens ...
1
vote
1answer
41 views

Finding data transfer rates on individual TCP/IP connections

In a application that has multiple TCP/IP connections with other applications on a Linux system how can I find the amount of data transferred between individual connections.
1
vote
2answers
85 views

Wheezy:ifconfig etho down - can still ping?

deathstar> ifconfig eth0 down deathstar> ifconfig -a eth0 Link encap:Ethernet HWaddr 00:23:ae:24:f6:76 inet addr:192.168.1.30 Bcast:192.168.1.255 Mask:255.255.255.0 ...
0
votes
1answer
43 views

understanding lsof -i output with web browsing

Sorry, if my question is nooby, but i don't understand some output lsof command. I try to run lsof -i on my home machine(debian linux) and what i obtain (showed one line; my browser chromium was ...
2
votes
1answer
60 views

Is there any convenient way to run remote program on local data?

I have two servers running Linux, namely A and B. There is a large amount of data on A, but I want to use the program x on B to process those data. It would be inefficient to transfer all data from A ...
0
votes
0answers
17 views

curl unable to find cslistener

netstat shows some connection from my linux box to remote host on their cslistener port. But trying to access that port using curl is giving error : $ curl -v https://myapp.domain.com:cslistener * ...
1
vote
1answer
43 views

High RX packet error count with modem - how to analyze?

I'm testing a CDMA modem on my Debian embedded Linux system. I'm doing some wgets of large files and am seeing the connection drop now and then. Looking at the ifconfig output for the PPP interface ...
0
votes
0answers
18 views

Configure Debian VPS network to work under an another Debian

I have a very big problem. Our VPS is under DDoS every day and now i bought a DDoS protected second vps temporary (until the main VPS get the DDoS protection). My question is how can i setup the ...
2
votes
1answer
147 views

Packet loss with RX error packets

I am seeing packet loss from all my blade servers within the HP Blade C7000 enclosure. # ping 192.168.2.140 PING 192.168.2.140 (192.168.2.140) 56(84) bytes of data. 64 bytes from 192.168.2.140: ...
1
vote
2answers
38 views

Why are user account on remote server called shell account

Why are user accounts on a remote server called shell account , remote account sounds like a more intuitive name what is the reason behind this very unintuitive name ???
1
vote
0answers
82 views

Difference between txqueuelen and ethtool tx

What's the difference between the txqueuelen setting that can be applied with either: ifconfig eth4 txqueuelen 5000 ip link set eth4 txqueuelen 5000 And the tx ring size setting that can be applied ...
1
vote
1answer
128 views

ath9k 802.11n 300Mbps at low speed

I'm testing my new home 802.11n network. router - slax 7, kernel 3.8.2, AR9382 mini pci-e (sparklan WPEA-121N) wlan0 IEEE 802.11abgn ESSID:"xyz" Mode:Ad-Hoc Frequency:2.412 GHz ...
0
votes
0answers
88 views

On ssh connection the auth.log shows as source IP the external IP of the server instead of the IP of the client

I have a very odd situation with my ssh connection. Every time I connect to my server, whatever is my external ip, the connection have as source the server's external ip. Example Server S.O.: ...
1
vote
1answer
54 views

How do I prevent my hostapd access point from pretending to route to the Internet?

I have a nice little iMX6 (an ARM CPU) board running Linux kernel 3.0.35 with hostapd 0.7.3. Setting up the wireless interface as an access point works fine but clients think they can be routed ...
2
votes
1answer
54 views

Load Balancing among multiple virtual network interfaces

I have an AWS instance with multiple virtual network interfaces all having different elastic IPs. Since I crawl from this machine, the IPs often get blocked. Distributing the outgoing traffic through ...
0
votes
0answers
25 views

Routing Application through different network interfaces [duplicate]

I have two interfaces on a server, let's call them eth0 and eth1. The underlying server is running CentOS 6.5 I would like to be able for some application to use eht0 while some others use eth1. ...
1
vote
0answers
93 views

Understand the Route table

I just setup the OpenVPN and it is working as expected. However, the routing table of the client is confusing me to no end. Here is the route table: # route -n Kernel IP routing table Destination ...
-3
votes
3answers
105 views

Configure eth1 to stop using dhcp [closed]

How do I configure eth1 (via terminal commands) to stop using DHCP. That is, if I had the ability to use the GUI, I would select the MANUAL setting.
3
votes
1answer
72 views

How can I know which program is sniffing packets?

I found the NIC of a machine is running in promiscuous mode, now how can I locate the program who is actually capturing packets?
0
votes
1answer
44 views

Debian 6 VM server - network connectivity problem

I'm having a problem with a Debian 6 VM server where it looses network connectivity and doesn't come back (server does not respond to pings, and can't connect to any services). This is a wired network ...
0
votes
1answer
45 views

host only ip address: can it be 10.*.*.*?

My router is set to have computers IP range from 10.1.1.1 to 10.1.1.60 I'm trying to run Linux in virtual box in a host computer with windows 7. The host computer has 10.1.1.5 currently, which is ...
1
vote
0answers
23 views

invisible bridged router with 2 route table

my setup I have 2 ISP connexion : ADSL and SDSL. A qos (named qos, ip : 192.9.201.252) server stands before the ADSL router. It is the only way to access the ADSL gateway (192.9.201.254) through a ...
1
vote
0answers
40 views

setting up a local VoIP to use as a Wifi Headset

I had this idea of using Wi-fi in a vehicle to connect my cell to the car call handler.Just as it works with bluetooth nowadays. Just to demonstrate that such a thing is possible , i had three Linux ...
2
votes
1answer
557 views

Linux Mint 15 : how to share wifi connection with other devices connected to Ethernet port?

My laptop connects to our apartment network via Wifi. I'd like to share this connection using the laptop's Ethernet port, i.e. be able to plug another system into Ethernet and have it also use the ...
1
vote
0answers
52 views

SNAT / Masquerade with shorewall

I've got a little question about Masquerading and SNAT in combination with shorwall and KVM. The Operating System is Scientific Linux 6.4. Setup is like this at my root server: Virtual Machine IP ...
2
votes
1answer
112 views

What network interface does Linux route traffic through by default? [closed]

I have a VPS with 4 IP addresses. I am changing the IP address of eth0 on daily basis. eht0:1 has its own IP address. eth0 (192.168.1.3, 192.168.1.4, 192.168.1.5) eth0:1 (192.168.2.1) I have my ...
8
votes
1answer
166 views

Send a packet over the network even when its target is the local host

Under Linux if you send a packet to the address of one of its network interfaces, this packet is routed internally, it is never sent over the network. That's the right thing in 99.99% of the cases. ...
4
votes
1answer
69 views

Does traffic addressed to one of a Linux system's own interfaces ever leave the system?

I have two separate servers running on the same port on a Linux system, one binded to the loopback interface, and the other to the public Ethernet interface. If I connect a client on that system to ...