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

learn more… | top users | synonyms

-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 ...
-3
votes
1answer
39 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 ...
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.
-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 ...
-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
39 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, ...
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: ...
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. ...
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 ...
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 ...
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. ...
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 ...
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 ...
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 ...
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 ...
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
2answers
59 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 ...
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
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 ...
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 ...
-1
votes
0answers
24 views

How does AWS convert an IPv6 address to an IPv4 address when whitelisting “My IP” address [migrated]

I recently had to whitelist my IP address in an AWS security group using the "My IP" option. It worked perfectly and displayed an IPv4 address, but when I looked up my IP address with Google I got an ...
-1
votes
1answer
34 views

Redirect IP to domain using SSL

I am trying to redirect my IP address to my domain which uses SSL. In my htaccess I am using following lines: RewriteCond %{HTTP_HOST} ^111\.111\.11\.111$ RewriteRule ^(.*)$ ...
2
votes
0answers
16 views

running or building docker results in net.ipv4.ip_forward being reset

this is on a rhel6 system (docker 1.7.1 from epel). basically, everytime i do a build or a run, i can see that the net.ipv4.ip_forward sysctl gets reset to 0 - which results in the container loosing ...
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 ...
1
vote
0answers
77 views

How to configure DNS (outside Azure) and Windows VM in Azure

I have just started getting to grips with moving existing websites in to Azure on a Windows Server (2012) VM. How do I set the DNS records (managed away from Azure) to go to the site set up on that ...
0
votes
0answers
14 views

How to make D-LINK switch IP permanent

I have procured a new D-Link Switch. I have changed its default ip address from 10.90.90.90 to a new ip address. eg - 192.168.100.101. But I am unable set the ip permanently. Whenever I power off the ...
1
vote
1answer
47 views

VMWare ESXi No internet access on VMs

Created a new VM on my brand new vmware ESXi using vspehre client 5.5 and assigned an IP to the VM but no internet access. I'm pretty sure both gateway and netmask are correct. What am I missing? ...
-3
votes
1answer
57 views

Ubuntu Server IP address not listed in ifconfig

I am not sure why the command "ifconfig" did not show my IP address, but I was still able to reach other hosts in the same network. It happens too many times to me and I did try to search but no luck ...
0
votes
1answer
16 views

Get client IP with Header add in Apache2

I am attempting to get the client IP in a HTTP header. I have seen a lot of references to getting this in Logs however i dont know how this translates to passing it as a header. I was going to use ...
-2
votes
1answer
39 views

Binding multiple IPs to one NIC [closed]

I'm trying to set up an ubuntu 14.04 server to listen on multiple IP addresses. A range has been assigned to the server (X.X.X.146/29) and ip addr show confirms that this is how eth0 has been ...
1
vote
0answers
14 views

How do I use Client9's IPCat with IPTables

I'd like to block all ips of all datacenters in the world with this list: https://github.com/client9/ipcat But I don't know how to use that list, I'd like a bash script that checks if there's an ...
-2
votes
1answer
25 views

Python and java static IP [closed]

I have a Python server. Each time I change the network the IP changes. I want it to have a static IP over all networks so it can receive data without customizing the code every time. I want to do the ...
-2
votes
1answer
28 views

Why isn't my EC2 Instance online after reboot? [duplicate]

I rebooted my Amazon EC2 Linux Instance today, though Amazon's AWS website. Now if I go to my website Safari says it can't find the server, AWS says my IP has stayed the same. What is wrong here? ...
0
votes
2answers
89 views

The incompatibility between Cloudflare and the reverse DNS

I'm already activated Cloudflare for my website and to apply that I had to replace my domain default nameservers with Cloudflare nameservers. Now my website has to send emails to the mail servers, but ...
0
votes
0answers
31 views

IP aliasing to a bridge interface under systemd

With Debian 8.1, how does one add a second IP address to a bridge interface under systems? Like in "IP Aliasing"? I tried it this way... In /etc/systemd/network subdirectory: File 40-br0.netdev ...
1
vote
0answers
27 views

How to use virtual interface as default interface

I've got a cloud SSD VPS @ OVH, and I'd like to change the default interface used for requests. I have two interfaces: eth0 (which is the default interface) and eth0:0 (which is the new virtual ...
1
vote
1answer
94 views

Is there a way to know a visitor is coming from a Starbucks?

AWS publishes its own IP range: https://docs.aws.amazon.com/general/latest/gr/aws-ip-ranges.html I was wondering if I could obtain the same for Starbucks establishments. The end goal is to ban ...