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

learn more… | top users | synonyms

0
votes
0answers
14 views

How does NAT work with more than 2^16 devices? [duplicate]

According to this article, NAT keeps track of which devices to route responses to by specifying a response port that it listens on. For example, when I make a request from a NATted computer, my router ...
0
votes
2answers
143 views

Can I access a NAT addressed host behind a gateway from the WAN side without DNS or VPN (with DNS if it's not possible)?

I have a very simple gateway running a minimal Linux which is serving as an IP router with NAT and DHCP on the LAN, and a static IP on the WAN. The gateway router from the LAN side goes to a big ...
1
vote
1answer
85 views

Get OpenVPN client IP script

My machine get's an IP from OpenVPN server when connecting to the VPN gateway. This is tun0 on Ubuntu. I assume naming might be different for other systems that may connect to OpenVPN gateway. Is ...
0
votes
1answer
30 views

How can I discover the ip ranges for a particular ISP for roadwarrior vpn whitelisting?

I have a road warrior who will be based overseas for several months and will be using a particular ISP. Our VPN is white-listed. Rather than add his IP which changes every few days, is there a way of ...
3
votes
1answer
3k views

Can I redirect/route IP adress to another IP address (windows) [closed]

Can I map 146.112.61.106 IP address to my 127.0.0.1 adress ? so when I type 146.112.61.106 I got redirected to 127.0.0.1 ? (some netsh command maybe ?)
0
votes
0answers
69 views

IIS 7.5 - Not listening 0.0.0.0:80

I am using IIS 7.5 on Windows Server 2008 R2. From this server, I can access the localhost (standard IIS start page is displayed). But I can't access it from any other machine belonging to the same ...
0
votes
0answers
21 views

Software to confirm accessibility of static IP remotely

I have a desktop machine (OS CentOS 7) with a static IP. Sometimes this static IP is not accessible remotely and I have to run following command to make it available remotely. sudo service ...
0
votes
0answers
361 views

Reserve current VIP on VM Azure

I'm trying to reserve the current VIP on my Virtual Machine. I don't want to create a new IP I want to use the current VIP. I think this is possible since 1 or 2 months ago. This is the code I ran: ...
1
vote
1answer
122 views

Prevent IP Spoofing on OpenVPN tun

I have a question regarding IP Spoofing and authentication. I have an OpenVPN server in TUN mode with many untrusted clients in the same VPN network, and I was wondering if one client is able to spoof ...
2
votes
0answers
55 views

Is global IP one-to-many communication practical today? [closed]

One-to-many communication over the internet is an enabling technology for many fascinating business and research projects. In principle, IPv4 and IPv6 allow for such communication by the ...
0
votes
1answer
138 views

Reverse DNS query of public IP returns localhost

I'm seeing this unusual behavior with reverse DNS lookups on this public IP Address: 222.253.228.79. Can someone explain what's going on? MXToolbox PTR lookup resolved localhost as the domain ...
0
votes
1answer
3k views

MIKROTIK - Two LANs connected with switch

I have a very simple network. I have two LAN networks (192.168.2.0/24 and 192.168.3.0/24) connected via a router at each site and the routers are connected via a switch. ...
0
votes
1answer
41 views

When is domain resolved for openvpn server?

In my setup I have several OpenVPN clients pointing to a vpn server's dns name. let's use vpn1.mydomain.com as an example. The server's public IP pointed to by that domain would be for example ...
0
votes
1answer
51 views

reserving private ip range

OpenVPN normally uses the private IP range of 10.8.0.0/24. If I wanted to create a vpc of 10.8.0.0/16, How can I prevent the DNS (or is it the DHCP) server for assigning addresses out of OenVPN's ...
-2
votes
3answers
114 views

Use two or more IP addresses to prevent DoS attacks [duplicate]

N00b question But say I had a dedicated server with two IP addresses, and the software (We'll just use Apache as an example) was using both IP address to serve content, in the event of a DoS attack ...
-5
votes
1answer
74 views

What is this IP address format? [closed]

Has anyone ever seen an IP address like this? "2601:304:cd90:78f0:ccec:2be6:b328:7f5d" I asked a coworker to give me his IP so I can add it to the firewall rules, but I've never seen anything like ...
0
votes
0answers
129 views

Browser shows IP and port in the url bar for sub-domain

We have a sub domain name like support.mycompany.com. When we write this in browser, it works as expected but the sub-domain changes to IP and port in the url bar. Why is this happening ? What should ...
0
votes
1answer
142 views

Does ColdFusion use TCP Ports?

I am trying to access a link on our network. Whenever I try, the page times out. I have discovered that this link is a Adobe ColdFusion web page. Does ColdFusion use a TCP port other than port 80? I ...
0
votes
1answer
174 views

What does 192.168.1.1 /4 mean? [duplicate]

What does 192.168.1.1 /4 mean? Is there a calculator that translates this kind of notation to a list of IP addresses? For that matter any type of notation so that it would be easy and quick in the ...
1
vote
0answers
177 views

Linux traffic shaping for multiple clients with tc [closed]

I need to divide bandwidth between several clients connected through IPSEC. I found this article: ...
0
votes
0answers
156 views

Vyatta or VyOS can support odd or even IP source routing or not

I tried to configure the even/odd policy for IP source routing in Vyattta/VyOS, but I get the below error message: Configuration error: "0.0.0.1/255.255.255.254" is not a valid IPv4 subnet ...
0
votes
1answer
63 views

IP forwarding server (or other solution)

We have physical server based in Hungary that are serving our Hungarian version of a site. For any other website we launch in different countries, We buy hosting in that country and launch another ...
0
votes
0answers
38 views

CentOS Server can't exit pfSense Network

Not sure if this is a routing issue or a firewall issue, or maybe a problem with the ifcfg-file of the CentOS machine. Here is the situation. I just got a 600Mb fiber connection from my ISP into the ...
4
votes
0answers
231 views

some IPs within a subnet not reachable

I'm running 3 Debian-Servers, each with its own IPMI. All IPs are within the same subnet with the same gateway. The problem is, that each server can ping its own IPMI but not the IPMI of the other 2 ...
8
votes
2answers
1k views

American Users have wrong IP address geolocation

In order to display the right content for my users I get their country based on their IP address. I have been receiving several reports from American users saying that the content is being displayed ...
4
votes
3answers
590 views

Do I need a dedicated IP address for each SSL certificate?

I am hosting multiple domains on a single AWS instance. The domains all share the same underlying codebase, but we provide "white label" services on various domains. Each of the domains (foo.com, ...
0
votes
0answers
61 views

IP forwarding issue in SLES12

I'm triying to configure iptables in SLES12 in order to route packages between two machines. This is the scenario. I want to connect from A to C using iptables and ip forwarding on machine B ...
2
votes
1answer
75 views

Returning client IP with BIND [closed]

I'm currently looking into ways to implement something like myip.opendns.com with BIND for myself. Basically I want to return the client's IP using DNS. For the service mentioned above this looks ...
1
vote
1answer
259 views

Can't access to a port (which is running Spring boot jar) via it's public ip

I have deployed my spring boot app jar to centos server with this command: nohup java -jar black-0.0.1-SNAPSHOT.jar > log_black.out & In my application.properties I set the server port ...
0
votes
0answers
102 views

Using VPN inside and outside of LAN (2 IP adresses)?

I have just setup a small VPN server racoon/strongswan/etc. (192.168.0.100) in my home LAN (192.168.0.0/24). The LAN consists of a single TP-Link router (192.168.0.1) and various clients ...
1
vote
2answers
284 views

How to retrieve previous IP/DNS information from Domain Controller logs?

I unfortunately have DNS scavenging on; information I need to retrieve could have been in Event Viewer DNS logs, but that's not there anymore, or maybe I am not looking for it properly. Story: I ...
0
votes
0answers
11 views

what the best approach to get the network values on Linux machines [duplicate]

what the major difference between ip addr command to ifconfig -a command? both command are give the same values network IP's ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc ...
0
votes
1answer
57 views

Hyper V and NAT Redirect IP on different VM

I have 2 IPs public (but one physical network port) and i want redirect IP public 1 on my VM 1 and, IP public 2 on my VM 2 But when i check my NAT configuration i can just redirect port on my interne ...
1
vote
1answer
46 views

Does switching routers when using same IP cause temp downtime?

Still learning networking but from my understanding MAC Addresses are what route network traffic so if I switch out a router but configure them with the same IP does it take time for the new MAC ...
0
votes
1answer
55 views

Increasing Network IP range/scope

We have windows 2012 AD environment with IIS & MS SQL running on it. Our current IP range is from 192.168.100.* with subnet mask 255.255.255.0. We are getting very close to .254 IP (Only 10-15 ...
-3
votes
1answer
17 views

Is it possible for networks to be assigned the same external ip [closed]

Is it possible for networks to be assigned the same external ip, not necessarily simultaneously, for example being assigned another users old external ip address? I am a programming student but my ...
0
votes
1answer
45 views

Egress Interface Routing - Potential Solution?

We have an ISP (ISP1), with a router maintained by the ISP. We are bringing up a 2nd ISP (ISP2), with routers we will deploy and maintain. We'd like to gradually migrate services from ISP1 to ISP2, ...
0
votes
1answer
59 views

127/8 address is not passed to IP stack?

I send IP/UDP frames using raw sockets with destination IP address from 127/8 range - e.g. 127.0.0.6. So, packets are sent over the network OK (checked using tcpdump on the target device). But on ...
-2
votes
1answer
34 views

Multiple Physical (and Virtual) servers (mail, web, etc.) on single link. Can I use DDNS to use top level domains to each box? [closed]

This all started last year when I switched to a LISP based solution for my old "C" address block without the expense of T1 lines. I have a cable link and a dsl link into my Cisco 2800 that then ...
0
votes
1answer
34 views

Multiple domains under one IP but direct IP entry shows apache page

I'm hosting around 15 domains under a single IP and everything works fine but when I visit the IP (http://IPaddyHERE) it shows me the apache page. How can I either redirect it to one of my domains or ...
0
votes
2answers
27 views

How can I audit Ip adresses of users logging into system?

I have a group of servers which use Kerberos for authentication. We distribute keytabs to users but want to ensure that a user never pass their keytab to someone else. Essentially we need to audit the ...
-3
votes
1answer
49 views

Dividing IP range among subnets [closed]

A company has been allocated all the IP addresses in the range 134.7.1.XXX, and needs to create three (3) subnets. The first subnet needs to be twice the size of the other 2 Is the answer simply: ...
-1
votes
2answers
175 views

AWS create an alias for my EC2 instance IP

I'm not expert in anything related with networks. I've reasearched through Internet but I'm not able to get with the solution for what I need. It's simple. I've bought a domain in GoDaddy.com and ...
0
votes
1answer
34 views

How to get list of domains pointed in unique IP

I want to know this is possible that i can get whole domains list which is pointed in unique (same) ip address example: i have ip 000.000.00.00 now i want to get whole ip list which is pointed in ...
0
votes
1answer
100 views

Forwarding all traffic coming into eth0 on host to eth1 on LXC container

I'm trying to monitor all the traffic coming into my computer using software running in an LXC container. The software on the LXC expects to be monitoring eth1. Thus, I would like to Create an ...
0
votes
0answers
314 views

Can not ssh to openstack instance using floating Ip address?

I've setup openstack using http://docs.openstack.org/developer/devstack/guides/single-machine.html machine has single Ethernet Port Eth0 With ip address 192.168.1.22 and i've created instance which ...
1
vote
1answer
72 views

ip range whitelist error

I need to whitelist an ip range for our load testing with Loadimpact. They have given us an ip list with ranges listed as: 54.80.0.0/13 (54.80.0.0 – 54.87.255.255) ...
2
votes
2answers
643 views

How to get public IPs on ESXi VMs?

We have a dedicated server with a hosting provider. We are running ESXi 6.0. The server has a single public IP which is currently being used for the management interface. The provider has also ...
1
vote
2answers
96 views

Transparent switch from Wifi to ethernet

I have the following network setup: Zyxel USG 200 Firewall which also acts as DHCP server 2 Switches 2 Wifi APs (Zyxel NWA3560-N and WAC6503D-S) with NAT and DHCP disabled The clients (mostly ...
-1
votes
1answer
58 views

ufw status (what does the v6 stand for?)

My ufw status output looks like this: To Action From -- ------ ---- 22 ALLOW Anywhere 80/tcp ...