the IP protocol and IP addresses

learn more… | top users | synonyms

5
votes
3answers
2k views

SSH access from inside and outside a LAN using the same terminal command

I have a Raspberry Pi (RPi) and I am making remote connections to it using ssh. I have managed to set up ssh correctly such that I can access the RPi both from a local area network and from the ...
0
votes
1answer
142 views

ssh login after changed IP

I have server running Ubuntu 12.04.2 LTS (GNU/Linux 2.6.32-042stab078.28 i686) Had no problem logging in to the server via ssh until my Internet Provider changed my IP. Now, the server keeps adding ...
17
votes
2answers
51k views

Finding the PID of the process using a specific port?

I am installing hadoop on my Ubuntu system. When I start it, it reports that port 9000 is busy. I used netstat -nlp|grep 9000 to see if such a port exists and I got this: tcp 0 0 ...
1
vote
0answers
182 views

Debian access point is detected, but provides no Internet access

I am use Debian sid. I want to share my network (ppp0) via AP (Access Point) to my mobile device. This is my configuration. /etc/hostapd/hostapd.conf : # WiFi Hotspot interface=wlan0 driver=nl80211 ...
9
votes
1answer
552 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. ...
0
votes
2answers
1k views

Connecting to localhost via system IP address

I am using Linux Mint 15, and I am running a Ruby web server(Thin) on port 3000. I can connect from my machine via localhost:3000, but the moment I type in the system IP address (eg. ...
3
votes
1answer
151 views

Using shell script to select static IPv4 configuration according to router address

I have Linux Mint 15, I live in a university where the hostel and lab have separate static IP settings. Is there a way to set up the connection mechanism so that my laptop will automatically select ...
2
votes
2answers
4k views

Static routes in route-eth0 ignored

Why might route-eth0 be ignored but route-eth1 not? Might be because eth0 is using DHCP and eth1 is statically-configured? I have some static routes configured in ...
0
votes
2answers
4k views

Need IP for my Virtual Machine

I want to scp to my virtual machine (CentOS 6) from my Windows 8 machine. I have installed VMPlayer and installed CentOS 6 on my machine. I have enabled Bridged adapter setting, but I still can't see ...
1
vote
1answer
3k views

Is there any IP messenger for Linux (CentOS)?

Currently am using a Linux (CentOS) machine. Is there any IP messenger for CentOS like iptux and Gnome IP Messenger?
6
votes
2answers
905 views

Static IP for 2 PCs on crossover cable in interfaces(5) file?

I've got 2 PCs connected on an Ethernet crossover cable. On PC1 I run: sudo ip addr add 192.168.2.1 peer 192.168.2.2 dev eth0 sudo ip link set dev eth0 up On PC2 I run: sudo ip addr add ...
0
votes
1answer
294 views

Current IP address as visible from the internet? [duplicate]

I know I can get the locally assigned IP address of my current machine by the local router like so: ifconfig However, I want to know what my IP address is as visible from the outside world. Or, in ...
-1
votes
3answers
2k views

How does ifconfig find a machine's external IP address?

Normally when I want to check the external IP address of a given machine, I simply curl some external website that sends me a response telling me what my IP address appears to it. However, I've ...
1
vote
2answers
117 views

how to identify IP address on eth0 when console isn’t available

I need help about the following I have very old Linux server with one IP address, unfortunately I can’t to access to Linux machine VIA console and I not remember the IP address So I now thinking ...
1
vote
2answers
5k views

Check a range of IP addresses to see if a host is active

I need to write a bash shell script that will check a range of IP addresses to see if a host is “alive” at that address.I also need to list the IP numbers of those that are “alive”, and provide a ...
1
vote
1answer
581 views

How to resolve when the IP of a NFS server changes

I have a Windows NFS server and several CentOS linux servers which were mounting volumes from it. The Windows server moved to a new network and even though DNS works and the NFS mount was mounted by ...
1
vote
0answers
92 views

What should be the right dhcp configuration for generating a new network over eth0?

Even not under a real server like scenario, I'm testing with dhcpd for learning and practice purposes. I'm using Ubuntu 12.04 LTS. I want to offer a network by my eth0 interface. I receive ip and so ...
4
votes
2answers
17k views

Set Static IP in CentOS 6.4?

Most guides seem to revolve around modifying ifcfg-eth0, which doesn't exist on my system.. [root@Azaz07]# vi /etc/sysconfig/network-scripts/ifcfg-eth0 [root@Azaz07]# ls ...
17
votes
1answer
37k views

Using ip addr instead of ifconfig reports “RTNETLINK answers: File exists” on Debian

I have a Debian system working as a wireless router with eth0 and wlan0. Now I added an additional network manually on eth1 with ifconfig: alix:~# ifconfig eth1 192.168.0.2 netmask 255.255.255.0 ...
0
votes
1answer
62 views

Ip connectivity with two interfcaes

I have two network interfaces in Linux machine , eth0 and eth1. IP is assigned to both interface from two different VLANs and default gateway to eth0. Now if interface eth0 is down I am unable to ...
0
votes
3answers
526 views

Why do two Ubuntu systems in the same network behave differently in DNS resolution?

I have two systems, both running Ubuntu 12.04, which are within the same network (connected by hubs without routing logic). Both systems are configured quite similar, but not identical. In particular, ...
2
votes
3answers
2k views

Programmatically extract private IP address(es)

I'm looking for an easy way to programmatically extract the private IPv4 address(es) of a computer. Something similar to this question, but restricted to private IPs. As an example, I can extract ...
0
votes
2answers
409 views

I want a static IP address for my (network? or computer?)

Me and two friends have been making a video game. We've thought about download hosting a bit, but found that Mediafire, Box, and those sorts of file-hosting sites' maximum free file-upload size is far ...
3
votes
2answers
637 views

Converting Webserver Logged IP Addresses to DNS

I'm trying to use a bash script to process a webserver log file and replace any IP's it finds with their corresponding DNS hostnames. An example entry of a single line from the log file is: ...
1
vote
2answers
669 views

Resolving pseudo domain name to private IP

Assume I have a VM running on OSX with private IP 10.0.0.1 which can be accessed from the host machine. I was wondering how can I map a pseudo domain, *.app.dev, to the private IP on my host machine ...
1
vote
3answers
377 views

Is there any alternative to echo daemon to display ip?

Is there any alternative to echo daemon to display ip instead of given string? For ex: my ip = 80.1.2.3 server ip = 1.2.3.4 root@my-machine bash$ telnet 1.2.3.4 Trying 1.2.3.4... Connected to ...
3
votes
2answers
4k views

What does ifup do when “/etc/network/interfaces” has an invalid netmask address?

The interfaces file looks like below: auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 192.168.0.130 netmask 250.255.255.0 gateway 192.168.0.254 As you can see ...
1
vote
0answers
286 views

Share (masquerade) Internet connection from Debian desktop to a bunch of computers

I need to share the Internet connection of my Debian desktop to some other devices (a Mac Laptop, and an Android tablet). The Debian desktop is connected to the local network via eth0, and the rest ...
2
votes
1answer
210 views

Share an external IP with several virtual hosts

For a centos server hosting a few LAMP virtual machines (using VirtualBox), I have a single external IP. I would like to be able to use this single host external IP to address the virtual machines. ...
1
vote
0answers
192 views

SSH to a machine that is getting it's network connection from an Android device(Google TV)

I have a Linux(Ubuntu) machine for my HTPC. It's running XBMC and I control it via my IR remote control. I don't have a (wired) keyboard to control it. It has Wifi adaptor but it's not installed. I ...
1
vote
1answer
48 views

Reach service on VM with private address

I have this configuration: source: https://www.lucidchart.com/publicSegments/view/5256a1e5-afb0-4c7a-96fa-35750a00527d/image.png Basically, I have to reach a service which is running on the virtual ...
7
votes
3answers
4k views

Difference between 'ifconfig' and 'ip' commands

I read some articles/tutorials on 'ifconfig' command, most of them included a common statement - "ifconfig is deprecated by ip command" and suggested to learn ip command. But none of them ...
2
votes
2answers
825 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 ...
17
votes
2answers
5k views

Is there an easy way to programmatically extract IP address?

Is there an easy way to programmatically extract IP address, without tedious parsing of ifconfig? I would not mind simple command output processing using sed to do it but not processing multiline ...
7
votes
2answers
2k views

Why does Linux require moving IP from eth interface to bridge interface

When a network interface (e.g., eth0) is added to a Linux bridge (e.g., br0), the IP address must be removed from eth0 and added to br0 for the networking to function properly. I recall reading in ...
1
vote
2answers
4k views

binding ip address to hostname

I just registered a domain name and paid for hosting with CentOS and I found that I had to do the binding myself following the lengthy steps http://www.linux-sxs.org/internet_serving/bind9.html I was ...
2
votes
1answer
2k views

Environment variable for ip address

I see somewhere people use: IF_ADDRESS="$(echo "$IP4_ADDRESS_0" | cut -d'/' -f1)" to get the IP address in a network configuration script. In my system, I create a script under the directory ...
4
votes
1answer
2k views

Can't ssh to beaglebone?

After I did: route add default gw 192.168.7.1 I also changed /etc/resolv.conf: nameserver 192.168.7.1 in order to share internet between Ubuntu in VMware. I've got internet working but after a ...
3
votes
2answers
2k 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 ...
3
votes
3answers
3k views

Get my country by IP in bash

I want to use the name of the country where I am now in a bash script. I can get the external IP using next command: curl ifconfig.me But how can I get my country name?
1
vote
1answer
506 views

What does the route Dest: 123.123.123.123, GW: 0.0.0.0 mean?

I have a route table: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 123.123.123.123 0.0.0.0 255.255.255.255 UH 0 0 0 ...
5
votes
2answers
2k views

What is the difference between `/sbin/ip route` and `/sbin/route`?

Linux comes with two utilities /sbin/route /sbin/ip route What is the difference between the two and what is the rule of thumb to use when you decide which one of the two you should use? I know ...
0
votes
1answer
151 views

how to list all the internet's IP ranges? [closed]

I was wondering if I list all the IP ranges directly available on the internet. perhaps also group them by country and ISP? I know that a lot of people do research nowadays on datamining and ...
0
votes
2answers
15k views

Delete Static Routes on Solaris 10

I have the following routes that I wish to delete: 10.250.0.0 10.250.0.37 UG 1 0 I have run the following to delete this with failure. bash-3.2# route delete ...
2
votes
3answers
1k views

What are the interface prefix meanings in ifconfig?

I'm not sure if these have a name, but on most computers I use the interface prefixes are usually: eth- : Ethernet/Wired wlan- : Wireless/WiFi However, on my ASUS RT-N56U, I have the following: ...
2
votes
2answers
190 views

quick filter of IP that's causing sendmail DOS under FreeBSD

I've got what appears to be a malicious/spam host that is overloading my Sendmail server causing it to refuse connections to other hosts. I'm overloaded by connections from one particular IP address. ...
-1
votes
2answers
2k views

How to know ip camera address

I have ip camera with static ip address preset. How can I know it ip using linux? I connect camera direct to my notebook. My system is Linux machine 3.5.7-gentoo #2 SMP ifconfig eth0 eth0: ...
2
votes
1answer
92 views

RapidIO packet filtering in Linux

I was wondering if there is support in Linux Kernel for RapidIO packets filtering, something similar to iptables, but based on RapidIO header?
2
votes
1answer
143 views

How can I be sure that access to my home server from my home network is not done via Internet?

As advised in this question: Network file-sharing between Linux and Android, I have decided to use ownCloud to store files on my home cloud server. However, my needs have changed a bit. I want to be ...
1
vote
0answers
106 views

coLinux strange networking trouble

Installed coLinux, Debian, sshd inside, pcap-bridged networking, and I can connect to ssh service from coLinux console and from LAN. Now, the strange part: I cannot connect to Linux guest ssh service ...