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

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2
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1answer
35 views

NSA 220 “Arping entire block”

After a physical move our service provider has assigned us two new static IP addresses. We are having difficulty getting any traffic whatsoever to the second address. Countless hours this week on ...
0
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0answers
19 views

Binding to same port on different IP addresses

My situation is as follows: One machine with 2 IP addresses: 10.10.20.7 and 10.10.20.17 Two applications that listen on port 9000 (each on it's own IP) What I'd like to achieve is while one app is ...
-3
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0answers
19 views

Total no. of hosts with 2 NATs in the whole network

How many hosts we can have with two NATs in the whole network if in IPv4 all the ip addresses are allowed to assign to a host in the network.
0
votes
1answer
20 views

Static route to Single IP using SSL connection

I am trying to configure a static route to a single IP. My question is two fold: How do I specify a single IP using a subnet mask x.x.x.x/? (not a range of ip's) My pc is making an SSL connection to ...
-1
votes
1answer
27 views

Local and Private IP Issue on Wamp Server [closed]

I'm having some problem regarding wamp server and my IP Address. In our company we have a machine that has a LOCAL IP of 192.168.x.xxx so basically we have wamp installed on it and every PC on the ...
17
votes
2answers
2k views

Pinging an IP address responds with different IP

When I try to ping the IP address 10.10.208.57 I have no response since nothing exist in the network with that IP address. However if I try to ping 10.10.208.057 instead another IP address responds: ...
1
vote
2answers
33 views

Release old IP and redirect user to new IP

I have a device that can be accessed over a local network in order to configure the device. One of the settings is to change the IP address of the local interface. The problem is that when I change ...
0
votes
1answer
35 views

How will the LAN to LAN firewall rule affect the traffic in the rest of the network

I have a following network setup (of course a bit modified from the real situation) I would like to setup a LAN to LAN rule on the ZyWALL firewall so that only certain ports/ip adresses are allowed ...
0
votes
1answer
26 views

Enlarge IP Network Address Space

Our small company uses a 192.68.0.0/24 network. As there are only 256 IP addresses, we will be running out of IP addresses soon. I wonder about the best strategy to change the network. Some devices ...
0
votes
2answers
51 views

Access internal ip (home server) through double NAT (router + ISP) [closed]

I have home server (debian-like machine) inside my wifi-network. I wan't to access it over http (for transmission-daemon web interface) and over ssh (to administrate it). The issue is that there are ...
0
votes
1answer
32 views

Force a traceroute to go through added IP address

Currently speaking I am on a linux (debain) machine which has 2 routed public IPv4 address: 1.1.1.50 1.1.1.60 Both of these IP addresses are currently simply added as a vitual host: 1.1.1.50 -> ...
0
votes
1answer
35 views

Hide OpenVPN client's IP

Is it possible for a OpenVPN server letting clients communicate with one another and they do not know other's IP in VPN? My VPN server is ubuntu 14.04 32bit
1
vote
0answers
42 views

Hyper-V, Subnet Masks, External IP Addresses, Hetzner [closed]

I am pretty new to this so I am going to try and explain this as best as I can. All Servers I have dealt with in the past have always had an internal IP address, the external access has always been at ...
0
votes
2answers
71 views

First and last IP address of the network 192.168.176.0/23 (subnet 23) [duplicate]

Let's have the following address of the network: 192.168.176.0/23. What are the first and last IP addresses of this network? Following this answer http://serverfault.com/a/327782/288201 I assume ...
5
votes
2answers
325 views

One IP address, two different countries [closed]

I was using multiple websites to determine the geolocation of an IP address, and ended up getting two different countries (on the same continent). What is the reason behind this?
1
vote
1answer
28 views

Website unavailable outsideLAN and randomly times out inside

Just as the title states. The website is not reachable from outside our network, and random computers inside the building timeout for a couple minutes and then are back up. For the computers inside ...
1
vote
0answers
44 views

IP-rules don't seem to be working on CentOS-6.6

I faced a bit odd difficulty with policy-based routing on CentOS-6.6 server. I have a setup where I need to enroute all packets originated from 172.25.0.0/16 destinated to 172.24.0.0/16 and some ...
1
vote
1answer
34 views

Finding local IP addresses using Python's stdlib under Debian jessie

I am writing a distributed systems program in python, and in this program I need to know the local ip-address... eg. 168.192.... 10.13..... etc, not 127.0.0.1 or hostname. I have found following ...
2
votes
1answer
49 views

Outgoing packet has NATed src address

Configuration/Topology: There are 3 machines hadoop2 | hadoop | driver eth0 10.10.15.3 | eth0 10.10.15.2 | tap0 192.168.0.199 ...
0
votes
1answer
60 views

Is there anyway to do ssh on a VM with a local IP address?

Scenario :I am using KVM as a hypervisor and Ubuntu as guest and host OS. There are many VMs on a PM and I am assigning IP addresses to those VMs using NAT. To create VMs I am using a baseimage. So ...
-3
votes
1answer
28 views

CDN - find the source IP [closed]

I want to communicate directly with website using CDN (Akamai, CloudFlare, etc.) Anyone knows if is it possible to find the IP address of websites using Akamai? or CloudFlare? I have tried to ping ...
-4
votes
1answer
25 views

External IP shows me ESXi web client [closed]

Recently i installed Vmware ESXi on my proliant server and created some VM there , opened ports on mikrotik router and installed nginx web server and when i tried to reach it via external ip it gets ...
0
votes
1answer
49 views

Server network setup with 2 NICs

We have a debian server server with 2 NICs. The Server should be configured with 2 IP addresses, one internal address for the communication in our LAN, and one public IP accessible from the internet. ...
2
votes
2answers
63 views

Adding a virtual NIC to a 2008R2 server makes internet unreachable, why?

I currently have a Windows Server 2008R2 box with a single physical NIC. For what I want to do I need two network adaptors in the box. To accomplish this, I added a legacy hardware device "Network ...
0
votes
1answer
36 views

Utilizing A Secondary IP On A NIC In A Windows Cluster

RELEVANT INFORMATION I have a windows cluster with 3 nodes in it... Node1 Node2 Node3 I have 4 NICs on each node... NIC1_Host NIC2_Virtuals NIC3_Cluster_HB NIC4_Live_Migration This is the ...
1
vote
1answer
43 views

Select source IP on windows server 2012 with multiple IPs on 1 NIC

I have searched a lot for a solution to this case but I couldn't find any. So, any help would be appreciated. I have a windows server 2012 with 1 NIC having 2 IPs bound to it 37.188.120.8 and ...
-1
votes
1answer
38 views

setup domain with random ip addresses [closed]

i set up nameservers as follows ns1.domain.com ip1 ns2.domain.com ip1 ns3.domain.com ip2 ns4.domain.com ip2 ns5.domain.com ip3 ns6.domain.com ip3 all dns records and PTR records correctly has been ...
-1
votes
1answer
33 views

Why must the IP be configured on the bridge device? [closed]

My understanding of a network bridge is having a kind of "virtual switch" which virtually connects the network devices (that were added to the bridge) as if I would connect them to a real switch with ...
2
votes
1answer
67 views

A local IP address (RFC 1918) on my network that is not … local

I've noticed an IP address today on my network (192.168.15.1) which when visited actually goes to a page that has a router webconfig page (Not my router) The puzzling thing is that i tried traceroute ...
1
vote
0answers
15 views

A local IP address (RFC 1918) on my network that is not … local .. [duplicate]

I've noticed an IP address today on my network (192.168.15.1) which when visited actually goes to a page that has a router webconfig page (Not my router) The puzzling thing is that i tried traceroute ...
-1
votes
1answer
11 views

Addresses overlapping

I was putting somes static addresses to my interfaces then it shows me this: 172.16.1.0 overlaps with FastEthernet 0/0 What does it mean when two addresses overlaps and how can we avoid it? EDIT: ...
2
votes
1answer
54 views

Prosody, how to get the IP address of connected clients?

I'm running Prosody server on ubuntu. I was wondering if there's a possible way to get the IP address of each client who connects to my server, basically, I want 2 things: 1) I want to get the IP ...
0
votes
0answers
22 views

CentOS wrong outgoing IP address on forward

I have a rather strange behaviour for me in here. I am trying to forward traffic between two interfaces (one being a bridge) but will not work as intended. Here is the setup: Kvm host has br0 ...
0
votes
1answer
36 views

Change source IP for specific target host

This is a follow up to this question of me. (Still on Debian 7.8) The problem isn't really IPSec related or anything, because I can't even ping the remote host with the "correct" source IP (through ...
0
votes
1answer
45 views

multiple ips on same server

We have a server (a router) with 5 IP addresses (we are hosting different Websites). I'm wondering why the server was setup like that: -> eth1 is connected to the modem -> when the connection is ...
1
vote
1answer
122 views

DNS errors after changing nameservers for Cloudflare

I don't know if this is the right place for my question, but I have a problem with my DNS/nameservers after changing the nameservers. I'm not sure if it is a problem at my side or at my webhost. I ...
-1
votes
2answers
69 views

How to configure network interfaces for three NIC cards all on three different subnets

I am setting up a cloud environment on Ubuntu and I am running into an interesting problem. Out of the box Ubuntu (all linux really) doesn't allow you to specify more than one gateway in ...
0
votes
0answers
32 views

ARP/ICMP in a network environment with overlapping IP address

Currently I have lab network setup to mimic customer's network deployment. (According to the customer, they are using VRF over VLAN so that their customer can have overlapping network connecting to ...
0
votes
0answers
56 views

Connect to a Server from my AWS EC2 instance

I have a app running on AWS EC2 which connects to a database in another server. The database connection Uri is as following, jdbc:XXX:172.18.2.107:3306/database This is what I got form my ...
0
votes
1answer
51 views

redirect traffic from 127.0.0.1:5003 to external interface

I have an application that exposes Web Services on the loopback address 127.0.0.1:5003 so they are only available to the localhost. Is it possible to redirect traffic from there to the external ...
-1
votes
1answer
77 views

Cannot connect to the Internet, Limited Access(Ethernet), Windows Server 2012

I am using a Windows Server 2012 for my institute, due to connectivity issues I uninstalled the services AD DS, DHCP, DNS. But after the uninstall the server is unable to connect to the Internet, ...
0
votes
1answer
61 views

Can't reach static IP address from outside the network

I've got a server with two network cards. The first one is configured with an internal IP and everything works just fine. The second one is configured with an external IP and is causing me some ...
0
votes
1answer
46 views

access server with ip address and not server name

I am trying to access my server to the following address: https://www.media-rewards.com/ But it doesn't work :(. However, if I use its ip address, it works: https://52.0.245.209/ I don't know ...
-2
votes
2answers
50 views

how to change the special port output source address?

I want to change the my datapackage from port 25 to another internal address(192.168.2.253). iptables -A OUTPUT -o em1 -p tcp --dport 25 -j SNAT --to 192.168.2.253 But I get the output is: ...
1
vote
3answers
239 views

How can one redirect to a new host all traffic destined for an old host?

We're moving a bunch of services, say from 1.2.3.4 to 5.6.7.8. In order to test that the new services are correctly configured, we'd like to redirect (to the new host) all traffic destined for the ...
0
votes
1answer
37 views

OpenVPN not giving the right ip-address

I have this Openvpn-configuration file generated for my windows 7 pc, when i connect to the openvpn it gives me the message that i'm connected with the vpn, but when i check i still get my old ...
0
votes
1answer
31 views

Will Apache2 performance be reduced by huge IP blocklist

My web application is getting more and more hits from unknown sources trying to access secure pages, such as admin panel, etc. So, I want to block IP address from certain countries using this source. ...
1
vote
1answer
61 views

iptables forward ip to another ip

I've configured multiple IP Addresses on my Ubuntu ssh server. Now the server can be accessed by using any IP Address, from 192.168.0.51 to 192.168.0.99. Depending on which IP Address someone uses to ...
0
votes
1answer
46 views

Traffic shaping for upload/download speed simulation [duplicate]

I'm building a network emulator to help realize different speeds. Basically, this system would shape a given user's network metrics (such as upload speed/download speeds/packet loss/jitter etc) based ...
0
votes
0answers
13 views

How can I assign an IP by UID in DHCPd

Here was answered how to assign an IP by MAC address. I want DHCPd server to assign IP by UID. Can i just add record to dhcpd.conf in the same manner? For example: host example { uid ...