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

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58 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 ...
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0answers
28 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 ...
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1answer
42 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 ...
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2answers
82 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 ...
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2answers
42 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" ...
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2answers
133 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 ...
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2answers
35 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 http://182.156.191.54:8080/EnterpriseUi/pushAction/OTM%3D.html?username=asd&password=asd&from=asd&to=...
0
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1answer
48 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 ...
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0answers
59 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
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1answer
44 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 ...
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votes
1answer
49 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 ^(.*)$ https://domain....
2
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0answers
18 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
53 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 52.16....
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0answers
90 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 ...
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0answers
15 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
56 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? ...
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votes
1answer
64 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
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1answer
33 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
43 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 ...
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0answers
17 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
33 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 ...
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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
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2answers
116 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 ...
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0answers
38 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 ...
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0answers
29 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
98 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 ...
0
votes
2answers
81 views

Problems on migrating Parse.com app to AWS EC2 Ubuntu

I have an EC2 machine with Ubuntu installed on it. On the machine, I have installed Node.js, MongoDB, and Github version of Parse Server. I have created a database called euro. In this database, I've ...
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votes
2answers
67 views

connecting two switches with different ip ranges

I have two switches that assign different DHCP IP addresses. one assigns 192.168.0.x to devices that are connected to it and the other one assigns 10.0.0.x ip addresses. Is this the reason I cannot ...
0
votes
1answer
43 views

Why is TTL increasing? (and generally behaving erratically)

Summary: TTL is not decremented when pinging hosts on a "network path" My laptop (10.10.13.10) is connected via OpenVPN to a server (10.10.13.1) which hosts several network interfaces. One of them is ...
0
votes
1answer
71 views

Unable to Ping a server IP which is outside the subnet mask

This is the setup we are having: 2 servers which are in HA[High Availability Network] are configured with the following IP address Server 1 --> 10.54.48.x and Server 2 --> 10.54.49.x. There is a ...
0
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1answer
41 views

Understanding how to use APNIC resources or how to get all subnet per country [closed]

I'm trying to get an up-to-date list of IPv4 ranges assigned to a country. I use http://ftp.apnic.net/apnic/stats/apnic/delegated-apnic-latest to get the list then filter by country extension. Let's ...
0
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1answer
83 views

nginx: [warn] low address bits

So yeah, i got a list of blocked ip-ranges, and some of them gives me an error in gninx when i try to restart nginx. nginx: [warn] low address bits of 79.8.0.0/12 are meaningless in /etc/nginx/...
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0answers
25 views

Restrict GitLab project deployment to IP above SSH key

I was thinking if I can restrict pulling, cloneing, eftching a repository by IP above the SSH key authentication. Imagine the worst situration: Somebody steals my SSH key and Passphrase Finds the ...
0
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2answers
67 views

Azure reserved ILPIP Address?

For an Azure VM deployed with the classic method I need to be sure that my output IP address never change and never get translated by SNAT. As far as I know I must reserve an IP Address in order to be ...
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0answers
50 views

DNS registration by Windows Servers not updating automatically (after reboots)

I have an issue with our Windows 2008-2012r2 servers not updating their DNS records automatically after reboots. After a while the records get removed from our DNS-servers (running 2012r2) making the ...
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votes
3answers
29 views

route entries are getting updated on reboot

I have 2 NIC on server one is for internal communication with 10.10.10.X IP and other is 172.X.X.X IP for external communication. I have route table like this [root@hadoopslave1 ~]# route Kernel IP ...
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votes
1answer
34 views

switch and local ip's [closed]

ive read in other topics that switches doesn't understand IP and they only use MAC addresses i have a lot of NAS and 4 computers on my network. I'm planning to buy a switch to replace a router that i ...
1
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1answer
32 views

How to disable virtual IP on centOS

I have 5 Centos machines and 2 of them have virtual IP enable on it. This is causing problem for some of the application specifically MapR. Here i need to disable virtual IP address. I have a ...
0
votes
1answer
62 views

how to fix “Invalid command 'set_real_ip_from'” error?

I'm using centos 6 , nginx as reverse proxy,directadmin and cloudflare. I followed the instructions to get real visitors IP as below: $ nano /etc/nginx/nginx.conf added these to http{ ...
1
vote
1answer
154 views

Why does this “netstat -tln” output show entries for “0.0.0.0:22” and “127.0.0.1:3306” [closed]

When I run the command netstat -tln I see the following output: Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 ...
0
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3answers
80 views

Assigning multiple IPs to the same machine with one interface

I have a server with a single physical interface eth0. I intend on running VMs on this server. To that end I have an IPv4 block which is routed to said server. What I'm trying to achieve is to spin-up ...
0
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2answers
123 views

Detecting IP Conflict

At my prior employer whenever we had two systems with the same IP address - particularly if they were windows systems we'd get a window popup on our system stating: "Windows has detected an IP ...
0
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0answers
69 views

Proxmox VMs with single IP

so I don't know much about the bridges and all, but I looked around and tried to get it still working. I've got one IP for the server itself and I thought to use second IP on the VMs. I thought I did ...
0
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2answers
150 views

How do I find out the IP Address for all print jobs to a printer

Our network printer is spitting out unwanted print jobs which no one seems to collect. I want to know from which machine the jobs comes to the printer. We have PaperCut in our server but these ...
2
votes
2answers
1k views

How to make lxd containers accessible to the LAN

If I use Virtualbox to spin up a VM, I can select "bridged" as the network adapter type and this results in the guest/virtual NIC being connected to my physical LAN and hence getting a LAN IP from my ...
0
votes
1answer
20 views

Let OS X ScreenSharing accept incoming connections only from a list of trusted IPs [closed]

As a security measure, is it possible to set up screen sharing on a remote Mac to accept connections only from a given list of IP addresses? (Of course I could set up a firewall to allow traffic on ...
6
votes
4answers
660 views

ran out of tcp udp ports [closed]

How to resolve a Windows or Linux system that runs out of the tcp/udp ports on a single server? I have over around 65000 tcp/udp ports being used on a single server as a result of SQL connections, ...
3
votes
1answer
105 views

Best practices for managing the IP addresses you own in DNS and their PTRs?

I was wondering how exactly the big companies go about managing all the IP addresses that their public servers use, especially in respect to setting up correct PTR-records. This is very important, ...
2
votes
1answer
152 views

Hyper-V external IP address

I am trying to apply an external IP address to my Virtual Host on CentOS, I have purchased a failover IP from my host and they have assigned me a Virtual MAC. I have created a static MAC on the ...
1
vote
1answer
80 views

Does a private MAC Address range exist?

I need a set of MAC/Ethernet addresses that I do not have to worry about collisions with, analogous to 192.168.x.x: addresses that will NEVER be assigned to real hardware.