IP - Internet Protocol, the most commonly-used set of rules for dispatching data across a large computer network.

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2answers
44 views

How do proxy servers change their IPs? [closed]

A lot of proxy servers say that they change their outgoing IP addresses every X hours (many seem to do it twice daily). How they do this? Is it something that a hosting company would do, or an ISP?
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1answer
43 views

How to point a domain to a dedicated ip

In my domain account while trying to update the nameservers , they are asking for hostname and ip. I have ip alone , how to create a host name. I am using windows server 2003 .
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0answers
39 views

Binding of IPs not working

I have two IP address ranges in my server. CentOS 6.2 The first one, is ok and working Then second range is suposed to be binded to eth0, using the cloning resource available in RedHat systems. My ...
3
votes
1answer
70 views

MPLS: choice of initial label for an incoming packet

At the entry of a MPLS tunnel, which packet fields are used to determine the label of an incoming packet? Here it says that there are other attributes that are taken into account besides the IP ...
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2answers
161 views

What is the KRYPTOLAN protocol?

I've searched for a while and can't seem to find any information on what KRYPTOLAN is. For the transport layer, IP protocol number 0x41 is assigned. In addition, ports 398/udp and 398/tcp are also ...
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1answer
56 views

Assign a public IP address to new Amazon Instance

My Amazon Instance got terminated accidentaly. This Instance was having an IP address associated with itself so that it can be accessed from internet. Now I have created another Instance from the ...
0
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1answer
167 views

tried to spam postfix, doesn't log IP address

I've had some serious spam issues with my local postfix installation, until I found out that there was a postfix user wich was allowed to relay mails (I still don't know why this was possible in the ...
1
vote
1answer
90 views

2 servers with 2 ip adresses cant ping each other

I rent 2 root servers from my provider that run Ubuntu 12.04.01 LTS. I ordered a second ip for each of them and configure them in /etc/network/interfaces as follows: iface eth0:1 inet static ...
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3answers
64 views

Can I set up port forwarding to emulate not just a port but another IP address?

I am running a proprietary Windows application which functions like a server. You install the program, and then it broadcasts itself over port 13083. The program is web-based, so it's accessed ...
3
votes
3answers
195 views

Why does operating system need to know subnet mask? [duplicate]

If I understand correctly, the operating system gets subnet mask together with IP and other stuff from the DHCP server. And this subnet mask seems to be important for router because it knows if packet ...
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4answers
208 views

IP address and geolocation

I very well know that this has been asked quite a number of times here itself but folks please give this question a read. Plus I'm giving my best to phrase this question, hence the Prelude/Question ...
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votes
1answer
254 views

Add IP address to Ubuntu 13.10 and separate webserver requests

I've got a Ubuntu 13.10 VPS server with 1 IPv4 (111.111.111.111) (and 1 IPv6 address). I recently requested an extra IP address (222.222.222.222) but I can't seem to figure out how to add the new IP ...
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1answer
64 views

IP translation for proxying IP web address with no dns entry

We use a dns based proxying system, which proxies certain addresses based on the dns entry, so for example for website1.com the dns return the IP if the proxy, and the request is sent though that, but ...
-1
votes
1answer
23 views

rerouting name to ip on local network [closed]

i created an intranet (lamp) and now i have to make it visible using this url intranet: the solution i found was to put in each computers (mac, windows) this in the hosts file using the ip ...
1
vote
1answer
71 views

Monitor a ucarp VIP using another interface

On Debian machines, I would like to setup a VIP between two nodes for a public IP, but I would like to avoid using three IP addresses to make ucarp communicate between the two nodes. Can I set it up ...
1
vote
2answers
59 views

Make NginX serve different pages depending on the IPv4 encoding base

You can access google on 186.215.155.54 , 0xBAD79B36 or 3134692150 (remember to put http:// before if you want to try). How is the base conversion handled by the browser? Is there any way for NginX ...
2
votes
1answer
127 views

How to View the IP routing table

How can I see ip routes I've added with ip route add default via x.x.x.55 table test1 for example I added 199 test1 and 198 test2 and 197 test3 to /etc/iproute2/rt_tables then I run: ip route add ...
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0answers
25 views

squid as parent of url filtering

I have this situation: client -> url-filtering -> squid -> internet The squid proxy sees all clients as a single IP ( of url filtering) so I have a lot of connections from a single IP. Squid is the ...
0
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1answer
27 views

Associate Multiple IPs to a EC2 instance

I have learned that one can associate multiple IP address to an instance in Amazon VPC. My question now is, I run an application (CLI based script which sends HTTP requests) on the instance and want ...
0
votes
1answer
99 views

Server with multiple ipv4 addresses adding ipv6

I've got a dedicated Centos 6.5 server with nginx and 2 ip-addresses (these are 2 ip(v4)-failover addresses from OVH) for hosting 2 different websites on the same server. I want to add ipv6 addresses ...
3
votes
2answers
106 views

New IP addressing from ISP

We just got a new Internet fiber service. Our ISP gave us a /30 for WAN and /29 for LAN? I have never seen this when setting up a new ISP service. I was always given a block of ip addresses (if ...
1
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0answers
21 views

graceful tunnel remote change

I want to solve a networking problem: Say I have 3 machine A, B, X in a local-network, where user have access to network resource of X's network interface tunX, which is a tunneled interface connects ...
1
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1answer
67 views

Move IP from one server to another without disruption

I have an internal DNS server running on a VM. I've rebuilt the server from scratch in a new VM, and I want to cut over from the old to the new at some point. In order to do this, I'll need to take ...
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0answers
131 views

Public IPs behind Watchguard Firebox for deploying Lync

We have an XTM 515 Firewall in our company and are in Lync 2013 implementation phase. For the Edge Server we need 3 different IP addresses. Our ISP provided 8 addresses in 2 different subnets. For ...
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votes
1answer
65 views

How to return a 200 to a specific IP address

I've got some webhealth checks that mainly see if the server is still alive. At the moment when each get is performed it spins up an instance of the web app on the server. I'd like to just have ...
0
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1answer
2k views

Setting 2 IPs on Ubuntu 12.04 with two network adaptor card

There is a VPS runing ubuntu 12.04.3 server on vmware esxi 5. It has 2 valid static IPs and two network cards eth0 and eth1. but only one of the assigned ips is pingable from outside. (both ips ang ...
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2answers
144 views

Windows Server 2008 using wrong IP address in IIS7

I have a Windows Server 2008 box with two static IP addresses (192.168.xxx.120 and 192.168.xxx.118) running IIS7 thay hosts ~30 websites. The DNS server on the network is configured to point website ...
-1
votes
1answer
142 views

Second IP for VPS on VmWare ESXI?

I bought a VPS Server run on vmware ESXI and this server just had one IP; Now I decided to ask from the reseller to give me another IP; He says in order to do that he have to remove my account and ...
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3answers
511 views

Restrict Tomcat Webapp external access by IP

I am successfully able to access my webapp using the external IP for my server. However I would now like to restrict access to the server by IP. I have added the following in conf/server.xml: ...
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5answers
112 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 ...
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0answers
35 views

CONNMARK on rewritten packets

I have tried to ask this question on superuser, for it, being a custom setup, belongs there, but that got no answer even with a bounty. I have a host, on which I rewrite saddr and daddr of IP packets ...
0
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1answer
59 views

Finding ips and hosts in a LAN . Different results

I need to scan a LAN and match hosts with ips. I used nmap -sL 192.168.1.* and i got a list of hosts and ips as i wanted. But when i checked using ipconfig on a few machines i saw that resuts form ...
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1answer
114 views

Several Server Errors (No database connect, can't create TCP/IP socket etc

My server stops taking requests on my website today. It works for some time, but then the server just stops working and throws several errors: 500 Internal Server Error Warning: mysql_connect(): ...
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1answer
71 views

Prevent hijacking IPs in a bridged network (KVM/libvirt)

Is there a solution to prevent a VM user assign/use IP addresses he doesn't own but are routed over the same bridge like his own addresses? The current setup looks like this with libvirt and KVM: ...
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votes
1answer
365 views

Microsoft , Hotmail , Live , MSN, Outlook , unable to send emails and no support received from microsoft in 3 months we are trying asking for that [closed]

Ok this is somenthing unbelievable, we have a website, users sign up and receives links to confirm they signed up BUT: 1 - microsoft blocked our IP (no one with microsoft email account can receive ...
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votes
1answer
336 views

How do I set up domain names for IP's on my LAN? [closed]

I have a LAN with 50 clients and my company has made me do a local WebApp. This is new territory for me, but as I see it, the individual internal IP's are regulated by MikroTIK. I was wondering, how ...
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votes
1answer
129 views

How to connect devices behind Comcast router/modem with devices behind wireless router [closed]

I know this is going to seem like a simple solution but I have been unable to find a clear answer through Google. Simple office setup: I have a Comcast modem/router that has 4 hard wired ports. In ...
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vote
1answer
51 views

Lost as to what I'm not doing in setting up a home lan network [closed]

I'm a PC repair tech and this is a problem I've recently been trying to troubleshoot for a customer. Upstairs they have the main router which servers as the gateway and router, both hardwired and ...
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0answers
102 views

Why is an ack response being sent to the wrong gateway?

I was trying to determine why a packet forwarded by iptables to my internal lan is returned on the wrong gateway. Having investigated this further, I determined that, at least in the case of one of ...
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votes
1answer
195 views

NAT mode virtual machines shows same IP address [duplicate]

I have two virtual machine running on a virtual box. VM 1 and VM 2 The network is in the NAT mode (default). Both the machines have the same IP address.So I assume that they are in two different ...
0
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2answers
284 views

Separated virtual networks with same subnet range with 2 interface

I'm having some problems with routing with the following: I have a server with 2 interfaces. It has 1-1 alias contains the same subnet. the 2 interface is connected to 2 switch, which are separated ...
2
votes
1answer
55 views

Request to server x Reply from server y

I need some advice from you guys: I'm dealing with a custom loadbalancer/software for which we will use 2 main servers and about 8 slave servers. In short: User sends request to main server, main ...
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0answers
54 views

Where can I find the range of IP addresses of my container OpenVZ

I'm looking for the "range of IP addresses of my container"... Where can I find those ? /etc/network/interfaces ? ifconfig ? I don't know and I can't find any answers... I need it for this tutorial ...
0
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2answers
87 views

Controlling 2 DHCP servers in one network

In my customer network, we have 2 DHCP servers. One is fully controlled by me and another by a different vendor. I want to make sure a set of devices (my devices) when connected, should get IP address ...
0
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0answers
42 views

2 Nics - Same Subnet..Route backup traffic through one of them [duplicate]

I have a windows server and a centos linux server. I want the nightly backup file (targz) that copies to the windows machine to use a different nic so that the main nic is not burdenend with moving ...
0
votes
1answer
49 views

Is it possible to set domain on an IP address without dns server? [closed]

I got an static ip from my isp and port 53 is closed(dns port). Is there any setting or section in my domain that I can resolve my domain to the static IP without dns server? thanks in advance
2
votes
2answers
706 views

Watchguard firebox: public IP addresses behind firewall with as much usable IP addresses as possible

Our ISP assigned us 16 public IP addresses that we want to assign to hosts behind a Watchguard firebox x750e. The IP addresses are: x.x.x.176/28 of which x.x.x.177 is the gateway. The hosts will be ...
0
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1answer
234 views

Ubuntu server not using localhost IP for internal communication

I am using Ubuntu Server 13.04 on my mail system. I am just setting the Postfix and Amavis. In every config for communication I am using 127.0.0.1 as IP address to pass mails to amavis. When I look to ...
0
votes
1answer
465 views

GRE keepalive with Linux and RouterOS

I have a Linux host and couple of routerboadrs. I created a GRE tunnel, but Linux does not answer keepalive packages. Then router mark gre connection as unreachable, so I cant send to Linux host from ...
0
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1answer
177 views

pretty-printing IP packets [closed]

I'm receiving IP packets using the SLIP protocol, and I'd like to pretty-print them similarly to how tcpdump does it. My program is able to decode the SLIP protocol and create a single string ...