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

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-3
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1answer
42 views

Setting up extra IP addresses

I have a dedicated server from OVH, recently bought 4 extra IP addresses (/30) and I'm very unsure about how to add them to my dedicated server, so I can use them. For example, my server's original ...
-1
votes
2answers
28 views

server with public IP cannot be accessed internally

Most of our servers only have private IPs. I am assigning additional public IP to one of our servers (server A), keeping its private IP at the same time. Here's what happens: Server A can be ...
0
votes
1answer
41 views

How do I handle a IP change affecting many servers?

Due to a location change, we have to move a number of servers to new IP addresses (from 10.X.*.* to 10.Y.*.*). We're taking the opportunity to clean up our IP allocations from a haphazard setup to a ...
0
votes
0answers
22 views

After restart system is going to its old IP address [on hold]

We have static IP addressing and recently we made some changes in our network. Now I need to change few systems' ip. But one system is giving problem. After restarting it is going back to it old ip. ...
0
votes
1answer
27 views

CentOS 6.7 vm static external IP setup issue

I have a vm setup and have setup like my CentOS 5.5. It is a strange setup since we used Comcast Gateway as the router and I really don't want to change that since we're Mac and Apple routers only ...
0
votes
0answers
16 views

Why do we add Web Server Public IP Addresses to organization's safe senders list (whitelist)?

When we use SaaS applications they suggest to include both the email relay IP address and Web Server Public IP Addresses to organization's safe senders list (white list) but when I perform couple of ...
-1
votes
0answers
9 views

Redirection user to fake page on accessing captive portal [on hold]

How can I redirect user to other page (say 0.0.0.0) whenever he tries to access captive portal(10.20.1.1:8090) over college WiFi.
13
votes
3answers
44k views

How can I get the IP address of a remote desktop client? And how can I trigger a shell command upon RDP connect?

Is there a way to determine the IP address of a remote desktop client using PowerShell (or some other method) on the server? (Windows Server 2008 R2 x64 is what I'm using) EDIT: I find that I can ...
-2
votes
0answers
18 views

Many Static Public IP's on Virtual Interfaces

I would really appreciate if you could help me on this, I have a D-Link DIR-686L router with DD-WRT installed on it. I also have a block of 29 public static ip from my isp. What I actually want to ...
-4
votes
0answers
30 views

Why do i need to turn off and on to get a IP from DHCP? [on hold]

When a power outage happens my PC boots direct when power becomes available again (as configured in bios). But my PC do not get an IP. I tried to: * ifdown eth0 & ifup eth0 * plug off and on LAN ...
0
votes
3answers
37 views

DNS issue Cannot resolve hostname issue DNS

uMacBooks-MacBook-Pro:~ MacBook$ ping www.reurl.in ping: cannot resolve www.reurl.in: Unknown host MacBooks-MacBook-Pro:~ MacBook$ Hello all i just shifted my site from a shared server to VPS ...
1
vote
1answer
2k 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 ...
-5
votes
0answers
22 views

How to change your IP address to any IP address like you want? [closed]

I see, why we don't have a technique to master IP address like we want. Just like SMS spoofing, you can choice any number you want to send sms. And In here, proxy or vpn, that not exit in my question ...
0
votes
0answers
41 views

Why and How to set Public IP on Loopback Interface

I been using this forums for many years and this is the first time im in need to open a question, i search across the internet but i could not get an specific and clear answer, probaly because i dont ...
0
votes
1answer
28 views

Finding ip address from mac addess

I have router in bridge mode which is installed Openwrt and I want to find IP address of devices which are connected to the router. Since router is in bridge mode, I can not find IP from DHCP leases, ...
6
votes
4answers
4k 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 ...
0
votes
1answer
25 views

Port Scanning Large Sets of Targets

1)How would you check to see if a list of ~10000 IPs if they have port 80 open? 2)How would you go about the same scenario but with a port range? 3)How would you check a list of 10000 IPs to see ...
-1
votes
2answers
28 views

iptables for internet connection sharing

Objective: I am working on an embedded Linux device with the following network configuration. Interface-1: 'wlan0' acts as an access point. Interface-2: 'eth1' connected to Internet. Interface-3: ...
31
votes
7answers
45k views

Is it possible for two hostnames share the same IP address?

Can anyone explain whether it is possible for two hostnames to share the same IP address? And what about if one hostname represents more than one IP address, is that possible too? Why?
0
votes
0answers
26 views

How to make a tunnel connection behind NAT with iptunnel/netcat?

How can I create an IP tunnel to a server on the internet with a device that is firewalled behind a NAT? I need to do this using only the commands iptunnel or nc. I'm not controlling the NAT router. ...
3
votes
4answers
287 views

ssl virtualhosts with apache ip requirements

i have multiple domains i'm using ssl for on one apache install. i know i need to put each domain on a separate IP externally. does the same apply to the IPs behind the NAT? meaning, i have one ...
146
votes
10answers
401k views

What's the command-line utility in Windows to do a reverse DNS look-up?

Is there a built-in command line tool that will do reverse DNS look-ups in Windows? I.e., something like <toolname> w.x.y.z => mycomputername I've tried: nslookup: seems to be forward ...
1
vote
1answer
10 views

Lighttpd Skip auth for ip

I have setup a login for a domain with lighttpd 1.4.31, no problem. Now, I would like to skip this login for a single IP address. I have tried a few different configs I found in the documentation ...
1
vote
0answers
66 views

Can I deny in nginx based by URI and IP?

Basically I have an wordpress site (with a ecommerce store and a social login). I have denied all access to wp-login.php based on ip address. The problem is that social login uses this wp-login file. ...
3
votes
4answers
3k views

How is DHCP request message broadcasted?

The broadcast address of DHCP request message is 255.255.255.255. Will this request message go through routers? It seems to be yes as the destination address is 255.255.255.255. However, it does not ...
0
votes
2answers
60 views

Run multiple websites/services on different subdomains with only one IP

I'm sure I can't be the first one to ask this, but I was not able to find anything that would fully apply to my scenario. So my apologies in advance, in case this has been asked before. I have a ...
0
votes
0answers
16 views

Unable to Ping over wifi [duplicate]

We have 2 PCs and 4 laptops in the office, and we use D-Link 2750U to connect to internet. All the computers can connect to the internet successfully. One thing that I noticed recently, is that PCs ...
6
votes
5answers
7k views

Apache virtual host based on *source* IP

Is it possible to configure Apache for different virtual hosts based on the source IP? (i.e. same interface, same hostname, but two different virtual hosts, with different content, based on source ...
0
votes
0answers
11 views

how to get ip address of centos 7 vm? [migrated]

I have a centos 7 virtual machine on my mac. I'm trying to get its ip but can't find it. ifconfig result and ip addr result
0
votes
0answers
13 views

Multiple IP failover on VPN PPTP

I have a server at SoYouStart, I ordered an IP failover. I want to setup a PPTP VPN so I could be able to have one connection to the "normal" IP and one to the failover IP I couldn't manage to do ...
0
votes
0answers
27 views

Tomcat IP whitelist on conf/web.xml

I have a tomcat 7 installation on a EC2 server on Amazon. I have also a webapp deployed as a root in the webapp folder. I need to be able to block all the requests from any IP addresses for the path ...
3
votes
4answers
6k views

nginx Block IP based on URI in one 'location'

There is currently a block of one location / location / { root /var/www/docs; proxy_pass http://backend; proxy_buffering on; proxy_buffer_size 64k; proxy_buffers ...
1
vote
0answers
25 views

How to access LAN IP Addresses : Cisco VPN Client [closed]

I have successfully configured Cisco VPN Client and connected. And allow LAN Access. I don't know how to connect LAN IP Addresses. I was trying to connect with Remote desktop connection, it's asking ...
1
vote
3answers
3k views

Powershell Win32_NetworkAdapterConfiguration Not “seeing” PPP Adapter

I am trying to get the IP of a PPP VPN network connection, but Win32_NetworkAdapterConfiguration does not seem to "see" it. If I interrogate all adapters using my script, it will see everything but ...
1
vote
2answers
2k 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 ...
1
vote
1answer
42 views

What should i use instead of eth0:1 if it is deprecated

usually i create /etc/sysconfig/network-scripts/ifcfg-eth0:1 and /etc/sysconfig/network-scripts/ifcfg-eth0:2 but i seen in internet that it is deprecated using eth0 :1 so what can i use to the VPS ...
0
votes
0answers
18 views

Cant map share by name, only by ip…randomly

We have a logon script to map some shares that reside on a server that is both dns server and dc (windows server 2003 sbs). The problem is that sometimes it fails to map the drives from the script ...
1
vote
1answer
49 views

Can't resolve DNS for RDWeb externally

I'm having trouble accessing RDWeb Access Server via internet browser using my FQDN (https://ifodgw.abacushub.io/rdweb) externally. I am able to access it externally using the elastic ip address ...
0
votes
1answer
49 views

additional public IP and local network

Currently we have router A that does all the routing/firewalling/forwarding/dhcp/... services. It also forwards ports 80 and 443 to server on our local network. We need second web server(not as a ...
2
votes
2answers
1k views

Stop IIS 8.5 from listing on Port 80, but still listen on port 443 for specific IPs

A have an application server that serves a number of IIS 8.5 applications on a number of IP's. Some use port 80 only, some use port 443 only, some use 80 & 443. For the sites that use 443 only, ...
0
votes
2answers
351 views

Can't use external IP on Hetzner VPS

I've changed my virtual server model on Hetzner recently. The new one has an external IPv4 address on which it's accessible from the internet (as it should). But I can't use this external IP in ...
1
vote
2answers
36 views

Static IP address on CentOS 7

I just installed CentOS minimal and now I am struggling to give my machine a fixed IP address. This is my ifcfg-ens32 file: DEVICE="ens32" TYPE="Ethernet" BOOTPROTO=static IP_ADDR="192.168.0.243" ...
0
votes
2answers
116 views

How to calculator IP range and subnets? [closed]

I am trying to find exact formula for finding the IP ranges for the below sample input 10.144.26.192/28 I am getting different IP count in different portals. I used the below online IP range ...
1
vote
2answers
1k views

Draytek 2830, Multiple VLANS on Same Port

The Kit Ubiquiti Unifi Long Range Wireless Access Point Cisco SG200-08P Switch (VLAN, POE Support) Draytek 2830VN Router The Problem I need to enable Multiple VLANS against a single port on the ...
14
votes
3answers
74k views

How do i find out what my IP Address of my MySQL host is?

I have a free domain running at x10hosting (x10.bz), and I want to find out the IP Address of my MySQL host for it, so I can contact the MySQL database from another host. I've already added that host ...
1
vote
2answers
34 views

IP based link unreachable only from my VPS IP

I have my own windows VPS with IP address XXX.XXX.XX.XXX, i have ip based link ...
2
votes
1answer
1k 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 ...
0
votes
1answer
43 views

Access local website without dns?

I got an nginx loadbalancer setup with 2 sites. The ip address of the loadbalancer is 192.168.123.10 I want to locally access the two sites to check if everything is working. But I'm a little puzzled ...
0
votes
0answers
47 views

How to change IP-address of the Synology NAS-station when using VPN-connection?

I have set up VPN-connection (L2TP/IPSec) at our office lately. The main thing is that our employees could access Synology NAS-station from their home. VPN-connection works great, but the problem is ...
1
vote
1answer
39 views

Why a computer in one VLAN cannot get an IP address from a DHCP server in another VLAN?

Can anybody please explain as to why a computer in one VLAN cannot get an IP address from a DHCP server in another VLAN by default? Why is there a need for a DHCP Relay Agent or an IP helper, they all ...