the IP protocol and IP addresses

learn more… | top users | synonyms

16
votes
6answers
12k views

How to get my own IP address and save it to a variable in a shell script?

How can I get my own IP address and save it to a variable in a shell script?
7
votes
7answers
2k views

Assigning IP address to environment variable [duplicate]

How can I assign the IP address of eth0 to an environment variable, say $ip, as easily as possible? Update: Distro is Ubuntu Server 12.04 LTS.
1
vote
2answers
1k 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
324 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 ...
4
votes
2answers
774 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 ...
4
votes
2answers
2k views

SSH to a remote computer having only the public IP

Is it possible to connect to a computer behind a router via SSH knowing only the public IP address (of the router)?
0
votes
1answer
129 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
8k 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
2answers
137 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
vote
3answers
653 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: ...
3
votes
1answer
219 views

Detecting multihomed machine

Is there a way to reliably detect whether or not a machine is multi-homed? I'd like to be able to write a script that will return a true or false regarding that information.
2
votes
1answer
61 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?
-1
votes
2answers
892 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
105 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 ...
4
votes
2answers
465 views

is it possible to send the remote connector ip via netcat?

Actually I want to make something like ifconfig.me functionality but only for my internal network. I see it the way smth on server listens some port and send ip of connected remote machine. Seems nc ...
0
votes
1answer
304 views

centos httpd.conf set different ip for a directory

I have 3 IPs in my server, i want use them to increase twitter API limits. How to set a different ip for a directory in centos 6.1 httpd.conf (apache 2.3.1) I added these line in the bottom of ...
1
vote
1answer
83 views

privoxy show client ip when sending mail

Is it possible for privoxy to show original client ip when sending mail ( example: this mail header should show the client's ip not the proxy ip: Received: from [xx.xx.xx.xx] by ...
1
vote
2answers
3k views

Checking if I can reach some ports from my computer

Is there a terminal command or something on OSX that I can use to test if I can reach some ports on a remote server? I know these ports are reachable on that server, because I can access them from ...
1
vote
3answers
3k views

how can I find out my server's subnet mask via SSH

Hi I use media tamples dv server... I connected it via SSH with putty.. I need my server's IP address and subnetmask. I know the IP address but I don't know the subnetmask. How can I find out my ...
2
votes
1answer
57 views

switch network on and off of a virtual remote server

I need to perform a testing panel which disconnects a network cable and connect it again on a specific virtual server via a php web page. I found that ip & ifconfig can disconnect a network, but ...
10
votes
3answers
2k views

Parsing log files for frequent IP's

So, I hacked this together while undergoing a DDOS attack to pull naughty ips out of my logs. Anyone have any improvements or other suggestions to make it better? Here's the general idea: pull ...
1
vote
2answers
306 views

Assigning IP to a bridged interfaces

Is there a way to assign an IP to bridged interfaces? For example, under normal circumstances: ifconfig eth0 0.0.0.0 ifconfig eth1 0.0.0.0 brctl addbr mybridge brctl addif mybridge eth0 brctl addif ...
2
votes
1answer
13k views

How to add Two Gateway on same machine

I have one test server that has Two Interfaces. To one interface i have assigned ip 172.16.122.1 and GW 172.16.xxx.xxx Now i connected cable to second interface and gave it ip 10.2.2.98. Now they ...
2
votes
3answers
195 views

Detect which interface traffic to an IP address goes through

I'm making an script, and I need to detect in what interface is the traffic of an IP going through. This is because in the arch, an IP address is attended only for one of four NIC's, but can be any of ...
1
vote
2answers
2k views

How to allow mysql remote connections via particular interface

I have a 10.237.49.251 IP on eth0 and another IP on another interface How do I enable remote mysql calls on eth0 device?
2
votes
3answers
80 views

Can DNS identify hostnames dynamically if they're statically configured?

I've got a small environment of ~40 VMs with static IPs on 12 servers, it would be dandy if I could refer to each VM by name. We have a lot of VMs come and go, so maintaining one static list is a ...
0
votes
1answer
313 views

Restoring default ip rule

I accidentally issued ip rule flush, now the default ip rule are all gone, which is, 32766: from all lookup main 32767: from all lookup default Anyone know how to add them back?
8
votes
4answers
13k 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 ...
2
votes
2answers
111 views

How do Apache2 VirtualHosts get resolved?

As I understand it, when you request a url from a website using your browser, it asks the DNS server that the OS is pointing at if it knows the ip address that relates to the dns-name of the server; ...
0
votes
4answers
116 views

how to know IPs available on a server?

I think there used to be a command to do that but I forget. Something like ipconfig in windows. My server has 10 available IPs and I want to know them all.
1
vote
1answer
508 views

No DNS on Debian wifi after unplugging the DNS cable

I have installed wheezy Release Candidate 1 to my old laptop (Benq Joybook A52) right now, and I have some problem with my wireless card (Atheros 5006). It can actually see the wireless networks, I ...
3
votes
1answer
313 views

Alternative to mrouted for DVMRP on Debian Squeeze

I need to implement DVMRP protocol to route multicast over Openvpn (tun) connection for some old 3Com NBX phones. I use Debian squeeze so mrouted is not available (obsolete). What can I use ...
1
vote
1answer
1k views

With two interfaces, how can I make one the default route and the other an alternate?

I have wired connection to intranet / lan of my work (with proxy) and one wireless without proxy that doesn't have access to the office lan. (Like Guest Wifi) My idea is to route all traffic to eth0 ...
3
votes
1answer
434 views

Kickstart: one network card with DHCP, one with static IP?

I am using Kickstart to automate a CentOS install. I wanted one of the interfaces to have static IP so I wrote - network --onboot yes --bootproto static \ -ip="intended IP" -netmask="intended ...
1
vote
1answer
116 views

Help understanding interfaces in Backtrack

I am fairly new in UNIX and have recently installed backtrack on a VMWare box on my machine and I am trying to use DHCLIENT command but am having trouble in understanding the interfaces. I am ...
0
votes
1answer
279 views

Unable to get embedded device to ping anything on the network

I have an embedded device, built using buildroot, kernel version 3.6.11 running busybox. The kernel is built with completely default options. I have configured the device according to what the network ...
0
votes
2answers
974 views

Is /etc/resolv.conf needed when using a static IP address?

I am trying to configure the IP address of my embedded device. The device should have a static IP address and I attempt to set this using the /etc/network/interfaces file with iface eth0 inet static ...
1
vote
2answers
666 views

Heartbeat with virtual IP at Ubuntu 12.04

I have installed heartbeat package at both linux devices so that when ever clients request a service they will be arrived to this IP, and client will not know what are the back-end/actual ip addresses ...
9
votes
3answers
13k views

How to find out if Ubuntu is using DHCP (Ubuntu 12.04 LTS GUI)

How can I find out if my IP address is DHCP, Fixed or Dynamic? I need to tell my network administrator what the IP address is, that my Virtual Machine is using. I know the numbers, but I don't know ...
2
votes
2answers
1k views

Use a specific interface for a specific destination subnet (source IP setting)

I am looking for some sort of routing trickery to set a specific source IP: Local machine has two IPs; Eth1: 192.168.0.1 Eth1:2 192.168.0.2 Default gateway is 192.168.0.254 via Eth1 Remote subnet ...
3
votes
1answer
547 views

set VM IP address to be the same every time from DHCP on CentOS 5.6

I have an issue where, each time I start my CentOS 5.6 VM, DHCP (I believe) is allocating my VM a different IP. I have the VM mapped as a Samba share in Windows 7 and this changes between 192.168.0.8, ...
2
votes
1answer
1k views

What to use for firewall testing (port opened or not)

so... we know that we can test that if a port is open on the firewall with: telnet SERVERIP PORT ..but afaik there are services that can't be tested with telnet, because ex.: telnet doesn't know ...
5
votes
4answers
19k views

How do I know what service is running on a particular port in linux?

I am trying to run weblogic server on my linux machine and I am getting the following error : ERROR: transport error 202: bind failed: Address already in use ERROR: JDWP Transport dt_socket failed to ...
2
votes
1answer
351 views

Running a local port scan and found open ports but, don't know what they're used for?

I wrote a very basic python script to port scan my system. I'm running linux-mint lisa: open_ports = [] for port in xrange(65536): conn = socket.socket(socket.AF_INET, socket.SOCK_STREAM) ...
2
votes
1answer
13k views

Unable to ping gateway & other Linux boxes on same network

I'm somewhat new to Linux, but I'm trying to network a few Linux machines. I can't seem to be able ping the gateway or the other Linux machines. My scenario: I have a few Linux boxes set up on a ...
8
votes
3answers
3k views

Can't access select https sites on Linux over PPPoE

My internet connection used to be a direct LAN connection to my provider. Back then, everything would load fine on both Windows and Ubuntu (dual boot). However, a while ago they started needing me to ...
4
votes
2answers
1k views

Discover MTU between me and destination IP

In a case I can use only UDP and ICMP protocols, how can I discover, in bytes, the path MTU for packet transfer from my computer to a destination IP?
0
votes
2answers
2k views

“system-config-network-tui &” doesn't work

When I try to edit or assign the IP using this command: system-config-network-tui & Terminal opens a console which is uncontrollable, just like this: This happens on CentOS and Red Hat.
6
votes
3answers
32k views

How can I know if IP Multicast is enabled

I have scripts that run IP multicast tests; however, my scripts are failing on a particular linux machine. I know that I can look at CONFIG_IP_MULTICAST in the kernel configuration file to determine ...
9
votes
1answer
4k views

Linux always send ICMP redirect

I have several Debian Squeeze (6.0.6 up to date) used as routers. When a link is down, they send ICMP redirects to local hosts. This is the default behaviour of Debian and several others. So once the ...