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Questions tagged [ip]

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

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Site can't be reached in certain browsers

I have a wiki site that I run for my organization that is a digitalocean droplet running wikimedia. Up until today, the site was always accessible via both the IP adddress and the domain name. All of ...
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8 views

Outgoing IP different than domain IP - Plesk [on hold]

I've a dedicated server with centos 7 & plesk. The server had an IP, let's say: 60.1.1.1, and I bought a failover IP (60.2.2.2). I configured a domain to work with the IP 60.2.2.2, it's working, ...
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19 views

Is Network address translation (NAT) considered a type of packet mangling?

I am learning about iptables, netfilter and networking in general. I understand that iptables supports 5 different kinds of tables - raw, mangle, nat, filter and security. From what I understand, ...
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1answer
19 views

Unabe to release unused External IP addresses on GCP

I am using google cloud for 1.5 months, one issue I am facing, where I am unable to release few of external IP addresses on GCP console. only message appears on clicking release IP "Releasing of IP ...
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1answer
34 views

Check the ports of a server [on hold]

I'm using a mtproto service that uses a tcp port but blocks it in some countries.(DPIs based) I checked out another server that offers the same service this server IP is :82.35.60.122 When I ...
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31 views

Blended Bandwidth with multiple carriers How to configure IP address

I have seen many colocation companies offering something called "Blended Bandwidth" and that makes me wonder how do they do it? Here is my example. If I would get two internet services, from ISP-A ...
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0answers
17 views

IP assignment task [duplicate]

I have an assignment, but I can't figure out where I should start. I'm not asking anyone to solve my homework, but I've tried to read up on network layers to assign IP addresses etc. but I can't seem ...
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39 views

Mac OS X How is Hostname configuration set up

I have taken over a network of Mac Minis at work. The system was installed by a development company that has gone bust and are uncontactable. Each of the Mac minis are connected to a Mac pro acting ...
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10 views

prohibit use of ip adress to access to website (use of container nginx reverse proxy)

I use docker compose to run two containers: one with a nginx reverse proxy (nginx-proxy) one with netdata I want to disallow access to netdata with the ip address. This IP cannot get certificate (I ...
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13 views

apache 2.4 + svn authz authentication with ip based access commit without user

I migrated some subversion repositories to a new server with Apache 2.4 and Subversion 1.8.10. The most repositories have only a basic user authentication and it works. But one repository needs a IP ...
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1answer
153 views

Why “Nexthop has invalid gateway” when it seems to be defined?

I have my own wireless router to which a remote VPN client, 10.7.0.6, is connected. I want traffic from one of the wireless clients to go through it, but I'm getting "Nexthop has invalid gateway". (I'...
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1answer
32 views

Subnetting, starting from a given address

I feel I understand general subnetting overall, I can answer any questions that the site http://subnettingquestions.com/ gives me but I seem to have a understanding gap some where. Say an ISP gives ...
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Nginx server listen configuration

I currently have the following nginx configuration: server { server_name example.com; listen 443 ssl http2; listen [::]:443 ssl http2; ... } After looking at the nginx documentation ...
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17 views

Automatically ban IP addressed using rule based on GET request

I'm setting up my first website on Ubuntu 18.04 using Apache and I've noticed the following in my apache error log on a daily basis: 94.102.49.125 - - [07/Feb/2019:11:32:55 +0000] "GET /muieblackcat ...
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31 views

Unable to connect to my winsock server using external IP

When I try to connect to my simple winsock server using my localhost/LAN IP, the connection is established with no problems. However, if I attempt to do so using my external IP, I keep getting ...
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12 views

Use a different public subnet on KVM virtual machines

The host at my datacenter owns a single IP that is bound to eth0: (Example values) auto eth0 iface eth0 inet static address 192.88.99.111 netmask 255.255.255.0 gateway 192.88.99.1 In addition ...
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1answer
37 views

Debian 9.7 - Add additional IP address. Different methods - advatages and disadvantages

I have dedicated server from some well known hoster and I bought new ip. I try to figured out what are advatages and disdvatages two methods of finish this task on debian 9.7 1) first method - which ...
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1answer
38 views

What influences “hostname -I” IP order

The man page of hostname tells us for the option -I: "Do not make any assumptions about the order of the output.". Anyway, our servers always gave back the external IP in the first place and the local ...
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1answer
45 views

Connecting a Nest Camera to Aruba Access Points (APs) backed by a Fortinet Firewall

I am having trouble connecting my Nest cameras to my network. I am running Aruba 300 series Access Points and a Fortinet firewall (which is doing the routing). The Nest cameras never connect, and ...
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0answers
138 views

Is there a TCP Maximum Segment Size (MSS) Minimum?

I have there a OpenVPN VPN network connection, where the MSS size 60 gets send out for some reason (don't know why yet). EDIT: Reason: OpenVPN mssfix was mistakenly set to 1 36 92.064383 10.102.0....
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1answer
43 views

How To Set Up Hyper-V Nested Virtualization in the Linux (include how to use the same IP and different port)

Question list as below: How to create nested VM? How to setup VM Hardware in the dashboard? How to use the same IP address and the different port number PS: I still have been ...
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24 views

virtual network manage multiple ip

I have an Private Virutal Server with two ip. Th OS is Ubuntu 16. I would like to allow only* the ports 22,80,442 on the first ip and Allow the ports 12301,12302,12303,12304 on the second ip. How I ...
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23 views

Tomcat localhost private ip link is not accessible by another PC in same network

My PC has the IP 192.168.1.185 The URL http://192.168.1.185:8080/projectname is not accessible by another computer in the same network having the IP 192.168.1.135. I have disabled IIS already ...
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1answer
31 views

Change Of External Static IP – Two Servers Connected

I’ve recently come to manage the IT at a small organisation and am in the process of figuring out their setup (they previously outsourced IT work). They have a main server (running Windows Server 2008 ...
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1answer
41 views

network (with defined IPs) in another network (with DHCP) - connection issues

We develop a client-server application where the server needs to be available with a known IP-address. Therefore, we configure router and PC with defined IP-addresses. This works fine, as long as ...
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1answer
48 views

/32 IP assigned to my server, different gateway

I recently purchased a dedicated server and I have been assigned a /30 subnet by my server provider. Let's say it's: 89.1.1.0/30 Gateway is 89.1.1.1 and my server's ESXi IP is 89.1.1.2 I then ...
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13 views

Attaching Lease IPs to a dedicated server and Subnetting [duplicate]

How does one go about attaching the lease IP addresses to a dedicated server, is it possible to do so? One of my developers is asking me to take these lease IP addresses, attach them to a dedicated ...
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62 views

Routing traffic between two subnets

I am connecting some number of embedded linux devices to a main LAN using a DHCP server and routing tables. On the main LAN (192.168.1.0/24) I have a PC connected and the first embedded linux device. ...
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1answer
17 views

shared_id/~username is showing 404

when I'm trying to access my site it works fine with http://domain_name/ but when I'm trying to use it with http://ip/~username it goes to 404 page. Do I need to do some additional settings in WHM or ...
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29 views

Whitelisting IPs for AWS VPC to bypass VPN

We have a AWS VPC with public and private subnets. And the OpenVPN server is running in a public subnet and its is used to connect to instances in private subnet. Now, we want to whitelist couple of ...
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1answer
49 views

What exactly happens when a TCP segment is sent to a broadcast address?

Does the segment get delivered -- and the recipients are supposed to drop it? Does the segment get dropped at the (layer 3) switch/router? Or something completely different? Explanations or "RTFM!" ...
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Is it possible to redirect traffic sent to an additional IP on the machine to a specific port?

I have a machine that acts as a gateway between a network (say N1) for other machines behind it on a different network (N2). I have to use a special application that listen on a specific port. So a ...
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1answer
46 views

DNS IP failover for two WAN

I have two WAN from different providers, I would like to know how can I manage an IP failover to switch services in case of failur of the primary WAN. The only solution that I know is to use dns ...
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1answer
21 views

Ip and secondary ip sometimes doesn't repond to ping

In order to have a virtual ip, I sometimes add another IP for my interface enp2s0f0 using # ifconfig enp2s0f0:1 192.168.201.33 up I also send a gratitus arp in order to publish the new ip of the ...
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1answer
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Ubuntu subnet distribution

I´ve a question regarding the distribution of subnets within my linux system or more specifically ubuntu. If I set a ip-adresse with a netmask, how will ubuntu set the netaddress and broadaddress of ...
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1answer
119 views

Connect over SSH to server running OpenVPN client with ip tables: “Nexthop has invalid gateway”

I tried to follow the solutions listed here for being able to continue SSH connections after connecting to an openvpn client: https://www.linode.com/community/questions/7381/openvpn-client-connected-...
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1answer
61 views

Strange IP routing - ping not working [closed]

From my server I can't clone repos from bitbucket.org nor reaching bitbucket.org using ping. Everything worked up to now with the current configuration. Here is what I found out up to now: Trying ...
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9answers
9k views

Why does typing an IP address instead of the corresponding domain name not show the website? [closed]

> host example.com example.com has address 93.184.216.34 example.com has IPv6 address 2606:2800:220:1:248:1893:25c8:1946 I type 93.184.216.34 instead of http://example.com in Chrome. It doesn't ...
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35 views

Use secondary IP as outgoing IP on SOCKS5 traffic that uses this IP

I have a server that runs OpenVPN on it's primary IP. There is also a second IP I connect to using SSH as a SOCKS5 setup like this: ssh -C2qTnN -D 1337 me@<secondary-ip> I go to whatismyip....
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53 views

Public IP on Sim Card - Alternate using VPN

I am setting up a local server runs CentOS7, with LAMPP PHP 7.2 service installed. The server connected to a Switcher, the switcher connected to the Load Balancer (with router), and the load balancer ...
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30 views

Apache SSL and non SSL sites VirtualHosts not working correctly

Server config: CentOS 7.4 mod_ssl installed Apache 2.4.6 site1.com and site2.de both point to the ip 1.2.3.4. site1.com is non-SSL-driven (temporarily for Let's Encrypt ACME-challenge - will be ...
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0answers
48 views

OpenVPN DNS resolution issue on router (EdgeOS)

I've been using OpenVPN client over vtun interface and all works as expected only if the remote VPN server name (in the OpenVPN config) is the IP address. When I use the DNS name as part of the ...
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1answer
216 views

Nginx bind to external IP only (listen hostname:port)

I'd like to specify an nginx server that listens only on external IP of an hostname given in listen directive. My server has domain name foobar.example.com which resolves to public IP 1.2.3.4. When I ...
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1answer
730 views

Does 0.0.0.0/7 represent the same range as 1.0.0.0/8?

The range of 0.0.0.0/7 is 0.0.0.0 - 1.255.255.255. The range of 1.0.0.0/8 is 1.0.0.0 - 1.255.255.255. AFAIK, 0.0.0.0/8 (0.0.0.0 - 0.255.255.255) is not usable. So, do these represent the same range ...
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2answers
37 views

SED to search for and delete ip with a partial match

I have various bash scripts that run, they scan log files for folks who try and make mischief, spam us and so on. I have been struggling with this for some days trying to figure this out. I have a ...
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2answers
67 views

Getting new ip address automatically [closed]

i want to get new public IP addresses from DHCP and add it to my etc0 device. how can i get IPs and append them? and also is there any limit on it? i talked to network manager on my datacenter and ...
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1answer
83 views

How to get reverse tunnel IP

I created reverse tunnel from Server to Endpoint using command: ssh -R 127.0.0.1:4000:localhost:81 user@server.domain Tunnel was created on Endpoint side and it leads from Server port 4000 to ...
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1answer
72 views

IP phones get DHCP NAK from superscope configured DHCP server

We are experiencing a strange problem with our 2012R2 DHCP server. Setup looks like this: Superscope with two scopes: SCOPE 1 - 192.168.100.0/24 (for PC) SCOPE 2 - 192.168.101.0/24 (for IP phones) No ...
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28 views

how to set outbound traffic for floating ip linux

I am using Heztner server for running my application, which owns IP as 95.216.167.191. Then I added a floating Ip which was 159.69.100.75. my network interface looks like that # interfaces(5) file ...
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36 views

Windows is listening on addresses never assigned

I have a Windows 2016 server used for development. Thus I have quite a lot of virtual switches and multiple addresses assigned to physical and logical network interfaces. But now I am encountering the ...