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

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1answer
24 views

Why can't I see public ip on my cloud server?

I have recently applied for a cloud-based server. I am not very experienced in system admin. So pardon me if this is silly. I was using ifconfig command to view available network interface. But I ...
-1
votes
1answer
26 views

Transfer IP address while Server Migration

I have to migrate my websites from server A to server B. Server A (213.171.207.165) I have 3 websites running on server A website1.com (213.171.207.235) website2.co.uk (213.171.207.245) website3.ae ...
14
votes
4answers
4k views

Users with Google's IP address. How is it possible?

I have a spanish website and I do not allow people from non-european countries to register and to login. Some time ago I started to receive messages from users who can not login. When I ask for their ...
3
votes
4answers
248 views

Private IP is accessing my website

I got some IPs like 192.168.0.* or 192.168.7.* accessing my website. I host it in Rackspace. How is that possible? IP spoofing? any clue? Thanks!
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0answers
8 views

Route port forward through 2 windows server 2008R2 network adapters to another network

our phone system at work is on a separate network to everything else and I need to forward a port from our gateway to it to allow our phone tech to remotely administer it. I have plugged the phone ...
0
votes
1answer
31 views

IP as a method of access control? (IP Spoofing possibilities)

I'm currently investigating the use of IP addresses as a form of access control: for example, only allowing access to an Apache VirtualHost if the request originates from a specific IP address or ...
3
votes
6answers
5k views

Monitor network traffic volume over interface

Is there a way to monitor the traffic (e.g., get a live view of the utilization) over a particular network interface, say eth0? The catch here is that the set of tools on the box is fixed, and is ...
0
votes
1answer
18 views

Restrict outgoing network traffic by domain name (Linux)

My root goal is to be able to prevent attackers from making unauthorised outgoing connections on my server (e.g. for connect-back shells). I can achieve this by blocking all ports for outgoing ...
-3
votes
0answers
27 views

How to use a specific ip or mac address for an application [on hold]

A simple but complex functionality. How to force an application to use a special IP address or a special MAC address(interface), for linux or windows platform. I mean a per application way. I googled ...
2
votes
1answer
546 views

Best practices for re-IP'ing / migrating servers and applications

Some of this question would be highly application-specific, but what approaches do you take when looking to migrate applications from one server/platform to another and servers form one network ...
1
vote
3answers
858 views

How to make same server IP accessible from multiple interfaces that are not bridged on Windows 2008 R2?

My server have two interfaces (e.g. A, B) that are not bridged. These interfaces have different IP adresses (e.g. 192.168.1.1, 10.0.0.1). These IP addresses are in different subnets. I need to ...
-1
votes
1answer
26 views

company computers with proxy but no gateway?

Can I safely assume that client computers in my customers environment do have a configured gateway (whether static or DHCP)? It looks obvious but I wonder if this scenario is realistic: In corporate ...
0
votes
1answer
925 views

understanding “ip addr change” and “ip addr replace” commands

At the moment I have following IPv4 addresses associated with eth0 interface: T60:~ # ip -V ip utility, iproute2-ss110629 T60:~ # ip addr show dev eth0 2: eth0: ...
0
votes
1answer
7 views

Unbound DNS: How to get source IP address from python mod

I use Unbound DNS with a custom python module. Based on who sends a query, I want to return different results. How do I get the Source IP from the Python module?
8
votes
2answers
3k views

How can I send visitors to the closest server using DNS?

Is there a way to localize dns entries? Meaning, that users from asia resolve mydomain.com to another ip than users from usa or europe. This would be helpful to give the users the server nearby. DNS ...
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votes
2answers
53 views

TTL in ping vs dig

When I ran ping google.com, I get a ttl value of 55: 64 bytes from 173.194.127.103: icmp_seq=68 ttl=55 time=16.4 ms When I ran dig google.com @ns1.google.com., it get a TTL value of 300. ...
0
votes
5answers
12k views

Outlook 2010 fails to connect to Exchange 2013

I have an Exchange Server 2013 and I am trying to connect using Outlook 2010. Both are running on the same server. The Outlook installation is just for testing mailboxes. Outlook first refused to ...
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votes
0answers
25 views

way to trace IP address change in Windows [closed]

Ours is a small network consisting of 15 users. We have lan messenger installed in every machine. Someone is misusing it by using annonymous IP address in their system. We traced the anonymous IP as ...
10
votes
3answers
775 views

Creative IP/subnet/dns schemes

I've only administered rather small networks (<=25 nodes). Usually I put the gateway .1, dns/proxy as .10, mail at .20, printers at .30-39 and so on and so forth. I never directly use IP addresses ...
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votes
0answers
17 views

mx recodrs misconfigured in ZPanel [closed]

I am using ZPanel for my domain and hosting. now my domain is working is fine. but i facing some problems on Webmail configuration. I am updating My DNS Recods in Zpanel like this Host Name TTL ...
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votes
0answers
22 views

how to make track visitor ip for my site in iis server. what will be the code? [closed]

how to track list of IP address of visitors to my website which is on IIS Server ? my website is in iis server. i want to know the visitors who visiting my site?
0
votes
0answers
9 views

IP address visible in browser's “Inspect Element” [migrated]

I've recently started hosting my own website on a machine on my network. Whenever anyone goes to my site and does "Inspect Element" my external IP address is visible to everyone. This seems like a ...
0
votes
2answers
39 views

Ubuntu 14.04, setup server IP for datacenter, IPMI

i'm going to build a server and send it to a datacenter. I got this from the datacenter. They told me to setup the server with it. VLAN: 256 IPv4: 79.133.49.168/29 IPv6: 2a01:07e0:0000:0256::/64 ...
5
votes
4answers
2k views

Openvpn, forward packets very slowly

I rebooted my server, and an odd issue just came out. I am running on ArchLinux, the clients are Ubuntu, Android and Mac. The problem is that accessing the internet via the clients is slow, about ...
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votes
2answers
42 views

How to generate a Self Signed SSL Certificate bound to IP address? [duplicate]

I have my application hosted in the cloud and while demoing to prospective clients, I would like to make sure that my browser doesn't complain due to the lack of trust. So I want to generate a self ...
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votes
1answer
76 views

Get a static internet ip address [closed]

Whenever my router goes off my IP gets constantly changed, which is not favourable when running an online service. How can I prevent this from happening?
2
votes
1answer
3k views

Centos/OVH: public IP on KVM virtual machine

Since a few days, I'm trying to configure my KVM vm to have a public IP address, without any success. First, I'm on OVH, and you need to know they don't allow networking from different mac addresses. ...
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votes
0answers
26 views

File Share over IP without Domain Credentials [duplicate]

My file server is running Windows Server 2012 R2, and is also the domain controller. We use custom in-house applications, which require access to a network share via IP address as opposed to over DNS. ...
2
votes
1answer
24 views

Difference between ip link eth down and ip link dev eth down

What's the difference between ip link set eth0 down and ip link set dev eth0 down ? The difference between the commands does not appear to be documented anywhere.
0
votes
0answers
17 views

Is there an easy way to monitor another domain user's processes and IPs these processes are contacting? [duplicate]

Is there a way to monitor which IPs the startup processes of another domain computer is contacting as a user logs in? Both person logging in and person who will be monitoring are domain admins. Short ...
33
votes
5answers
3k views

Is it valid to have part of an IPv4 address set to zero?

I am working on a change in a Java EE application that would authenticate based on the user's IP address using ServletRequest.getRemoteAddr. We store IP address ranges (FROM_IP and TO_IP) in a ...
35
votes
12answers
9k views

Why would you use IPv6 internally?

Of course, I realize the need to go to IPv6 out on the open Internet since we are running out of addresses, but I really don't understand why there is any need to use it on an internal network. I have ...
1
vote
3answers
751 views

Assign a secondary IP address to a Windows machine using DHCP

Is it possible to configure dhcpd (on a Linux box) to assign a Windows PC 2 separate IP configurations? Right now I've configured the two IP addresses manually and it does exactly what's needed, but ...
-1
votes
1answer
40 views

Is there a Universal/Generic Default Gateway Address in IPv4? [closed]

Is there a universal and/or generic default gateway address in IPv4? I'm looking for something similar to the way you can always reference a NICs IP address from itself with 127.0.0.1 regardless of ...
0
votes
2answers
37 views

Private Network Interface between to MacOSX servers

We would like to set up and private single cable connection between two Mavericks servers, that also need to talk to the rest-of-the-world. The two servers for sake of argument are DB and Web. There ...
0
votes
0answers
25 views

Does netfilter reassemble IP fragments when packet is forwarded?

IP datagram should be reassemble in the termination of the path because the fragments may arrive from different paths. I think Netfilter need to reassemble a IP datagram to inspect the whole payload ...
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votes
0answers
25 views

Master IP, Shared IP or Dedicated IP; which is faster?

i have such as these ip adresse on my server (example) 198.216.0.10 198.216.0.11 198.216.0.12 198.216.0.13 198.216.0.10 is the main one(MASTER IP), and i'm using it as shared ip with about 10 ...
0
votes
1answer
26 views

Is there any solution to change the source IP from outgoing WAN A to receiving WAN B?

I am configuring a office router for crossing the GFW in China. I want to use WAN A(actually a low bandwidth VPN tunnel) only to send package to target servers (YouTube for example). And change the ...
0
votes
1answer
27 views

IP route not on default gateway

I am trying to setup a network that is only accessible if you go through the '10.222.3.1' switch. It is a test environment that we do not want interfering with our production environment. The trouble ...
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votes
5answers
131 views

What happens if ISPs mess up IP allocation?

I've been wondering about this for a long time but never really got around to asking it. I know that a lot of companies were initially assigned IP addresses within the /8 (Class A) range and a lot ...
0
votes
2answers
956 views

Adding a static route to a virtual interface using configuration files rather than ip command

We statically assign our routes using the /etc/sysconfig/network-scripts/route-ethx files. This makes managing them fairly easy since we add the routes during the kickstart process (by way of ...
0
votes
1answer
39 views

Telnet, Startech, and a Transmitter

I'm at a bit of a loss and will also preface by saying that I have very little experience working with Telnet. I have Startech Serial over IP 'webserver' setup, everything seems fine on this end. Next ...
0
votes
1answer
19 views

Connect remotely to an APIPA assigned host

I had the unfortunate (and not correctly planned) event of having one of my remote Hyper-V hosts assigned an APIPA address hence i cannot connect by any means on it. Funny thing is, i can RDP to the ...
1
vote
2answers
11k views

Can I use nmap to discover IPs and mac addresses?

When I need to locate the IPs of devices by their mac address on a Windows system, I normally use Advanced IP Scanner (from radmin.com) to scan the network, then I use arp -a to list the mac ...
2
votes
3answers
884 views

How to enable IPv6 Autoconfiguration with static address in Linux (RHEL)

I have a static IPv6 address I would like to assign. When I add the address to the /etc/sysconfig/network-scripts/ifcfg-eth0 file and restart networking I realize I get several IPv6 addresses. The ...
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votes
0answers
59 views

WinServer 2012 DC with 2 IPs on one NIC - DNS and other Problems

I have a Windows Server 2012 Domain Controller which is also temprarily running an SQL Server. For not having to change the SQL Server IP in all the clients I assigned its former IP to the DC as the ...
1
vote
2answers
677 views

How to configure Zenoss to list devices by name instead IP address automatically?

I've set Zenoss 4.2.3 to get devices from our entire network from all subnets (INFRASTRUCTURE -> DEVICES). But it returns me the device list only with the IP address, it doesn't obtain the hostnames ...
1
vote
2answers
1k views

SBS 2008 DNS issues in BPA

I'm gettng constant Critical Issue events in the Small Business Server Best Practices Analyser & resulting SBS Console reports that begin "The DNS client is not configured to point only to the ...
2
votes
1answer
3k views

ping works but ssh fails

machine1 IP: 172.30.11.119 machine2 IP: 172.30.11.120 machine3 IP: 172.30.11.121 machine4 IP: 172.30.11.122 Note: These machines are connected to LAN. I have configured the static ...
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votes
1answer
29 views

AWS Multiple Elastic IPs to one instance

I need some guide to lead me to setup multiple (6) ips for 6 websites (1 ip - 1 website) on one instance. or what to look for I have found this http://www.ec2instances.info/ If it is true I need t2 ...