Newest ip Questions

Q&A for system and network administrators

Set IP address for virtual network interface

I have virtual interface tun0 connected to my vpn provider. I used the following commands to set it up with openvpn (route_up.sh): #!/bin/sh ip route add default via $route_vpn_gateway dev $dev table ...

Updating a paid domain or subdomain to a dynamic ip [closed]

i was wondering if there was a service that is totaly free that can update the subdomain registered IP adress in the registry automaticly ? Like if i had a update script on the server that checks in ...

Creating IP ranges from forwarding table [closed]

I am working through problems for practice and have been given: Consider a datagram network using 8-bit host addresses. Suppose a router uses longest prefix matching and has the following forwarding ...

How to map a hostname to IP with custom logic?

I need to resolve hostnames with the next logic: r0z0n0 10.0.0.0 r10z15n120 10.10.15.120 r255z255n255 10.255.255.255 and so on. I don't want to have 16,581,375 records. It is better to use a ...

HP 1910-48G internal network can't ping other ip pools

I am struggling with setting up my hp procurve v1910-48G. I created 5 vlans: VLAN ID 1 192.168.0.1/24 <- default VLAN ID 10 192.168.1.254/24 VLAN ID 20 192.168.2.254/24 VLAN ID 30 192.168.3.254/...

Valid Subnet Masks [duplicate]

I just read about the CIDR subnetmask. ie. you can write an IP address and indicate it's subnetmask by writing: 192.168.1.1/23 Because the /23 part indicates how many significant bits are set to 1 (...

Route IP from server A to server B

I try to route 137.74.9.193 from server A to server B (Ubuntu 16.04). If i try to ping 137.74.9.193 from Server A it works as expected, but when i try to ping from my personal computer it doesn't ...

Apache http proxy - change outgoing ip

I have centos dedicted server with 5 assigned ip addresses. eth0 - ip 1 eth0:1 - ip 2 eth0:2 - ip 3 eth0:3 - ip 4 eth0:4 - ip 5 I have apache with proxy enabled. I can connect to the proxy using any ...

IP Ranges certain company? [on hold]

Please help. Is there a way that i can lookup what IP ranges certain companies (like slack etc.) have? My goal is to figures out how many IP-Ranges the company have. I already looked for IP-Ranges-...

How to setup static IP with gateway IP out of the subnet using systemd-networkd?

Basically what i want to do is: ~$ ip addr add 51.255.174.122/32 dev eth0 ~$ ip route add 51.255.68.1 dev eth0 ~$ ip route add default via 51.255.68.1 what i tried is: /etc/systemd/network/wired....

Route traffic to hosted server from aws vpc

I am having a DSL Connection in my premises. I don't have any static IP from ISP. My on-premises server is hosted in Italy. Now I want to redirect traffic from my aws vpc instance to my on-premises ...

Connecting by IP avoid DNS lookup

Simple question that I tried searching for but haven't found an answer for. As I understand it attempting to connect to say google.com it will go broadcast out for someone who knows where google.com ...

AWS - How to answer “what IP should we whitelist?” [closed]

AWS makes bringing an idea to life from proof-of-concept to full scale marketable solutions easy with their "Lego block"-like infrastructure components. A project can go from a single EC2, to a few ...

Routing from one IP to another on Windows 2008

I need a help on solving an issue. We have an application connecting to DB in another outer network with internet in between. The application should connect to 143.10.10.10 IP address which works well....

1 file server 2 nic's 2 PHYSICAL SEPARATED networks 2 routers same ip

I'm an IT administrator in school. I use a windows 2003(also have a windows 2008 server ready for testing) file server with 2 NICs. At the moment only one NIC from file server is connected to the ...

How to have a backup server [closed]

Currently I have a server that hosts more than thirty websites. Sometime ago, the hard drives dropped and my sites did not work anymore. Fortunately I had backups of the site on another server. ...

Trouble configuring a powerconnect 5548. Can't set to Master

So I've inherit a powerconnect 5548P that I'm trying to setup but I can't get it to work. When I first plugged it I remember it was assigned an IP and I was able to reach the web interface. Now I'm ...

Host can't communicate with hyper-v VM

I can't ping/ssh from the host to the VM or the other way around. I'm running a Ubuntu virtual machine on a Windows 10 host with hyper-v. I'm using a internal virtual switch with hyper-v. The VM has ...

D-Link router: Assign fixed IP address for given MAC address [migrated]

This is a product specific question. Please delete if not appropriate. I have a D-Link DWR-116 router which I bought recently to replace my failed netgear router On my netgear router I could set up ...

Setting up static ip in server and router for mysql communication in windows server [migrated]

I'm a begginner in this topic of routers, I have a client that bought an static ip looks like this 201.122.204.101 however that ip was set up on router that is a hg532e (I don't know if that affects) ...

Nginx still redirects even though I removed the rule from the conf

I was using this block for redirecting the website's IP to the actual URL: # IP to domain redirect server { # tell on which port this server listens listen [::]:80; listen 80; ...

Connect a computer through VPN with a different network

Hi, I would like to connect to a computer through a vpn in another network. My computer (Debian 7.11) is in the network 192.168.2.0/24. My gateway (192.168.2.1) is a VPN router. It connects to ...

Is it possible to visit one of the websites that are sharing a same IP by IP address?

I hosted my several websites on Linode, they are all sharing a same IP address. I use webmin/virtualmin to manage my server and websites. Is it possible to visit one of the websites by IP address? ...

SQL Server Reporting Services (SSRS) IP Handling on Multi-Instance Servers

Tl;Dr I have a SQL Server instance (SQLSERVER01-i01) with a dedicated IP address and port (162.xxx.xxx.51:1433) on a multi-instance SQL Server (each SQL Server instance on the Windows Server has its ...

Mobile ip assignement using NAT are location dependent?

This post explains very well the logic behind ip assignation for mobile devices but as far as I understand 1 IP can be assigned to various smartphones by the ISP using NAT. I would like to know if ...

Changing IP on CentOS machine

I have a virtual machine (from Hetzner) under CentOS 7.2. If I type hostname -I I'll receive: 172.31.1.100 But really, the machine has another static IP address. Further, we denote its as <IP&...

VSTS IP Address Ranges [closed]

I have an application on VSTS/visualstudio.com I would like to set up continuous deployment to AWS. I currently restrict access to the database server with whitelisted IP on the firewall. This ...

Redirect IP on Server host to another IP [duplicate]

I asked this question last week. It was unclear and asking again with the help of a diagram. Path 1 – Application has direct access to DB with private IP of DB which is say 10.20.20.20. This path is ...

Arch linux gateway - can't ping internet interface

I setup a simple gateway with Arch Linux: GATEWAY# ifconfig eth0 172.27.210.221 netmask 255.255.255.0 GATEWAY# ifconfig wlan0 10.8.221.221 netmask 255.255.0.0 GATEWAY# iwconfig wlan0 essid OpenWifi ...

One particular dedicated server can't ping one particular IP on on a VM and vice versa

I've 3 dedicated servers. 2 of them are running multiple VMs. VMs are all using multiple IPs from different countries. When the other dedicated tries to contact a particular VM using one ip, the ...

Access website through IP address with path to index file instead of domain name [closed]

Is it possible to access website through IP address with path to index file instead of domain name? Example: Domain: Youtube.com IP address: 216.58.209.142 Trying to access the website through IP ...

Methodology to find a “stable” IP addres within some ISP's AS network

Some definition(s)/meaning(s): Stable IP address - a host within Internet Service Provider (ISP) Autonomous system (AS) network, replaying to ICMP type 8 echo request. Genesis: My routers monitor ...

ModSecurity SecRule REMOTE_ADDR NOT WORKING?

I'm trying to nolog for a particular IP 10.68.***.96 and 127.0.0.1 address but it seem not working... I already tried the following configurations (I know that some of them are depreciated but it's ...

pfSense + NAT and nginx - real IP not shown in logs

My current setup includes a pfSense firewall which port forwards public WAN traffic to a NAT internal IP. Example: 104.12.134.12:80 (WAN IP) port forwards all traffic to 192.168.1.104:80 This is ...

Prevent IIS Listing on Port 443 for Single IP Address

I am running a website in IIS and am also running another piece of software which streams media over port 1935 on the same server. The streaming software also has the capability of delivering content ...

VPS IP Grabbing Abuse: VPS using another IP from network by itself

I bought a Windows Server 2012 VPS subscription two months back, and deployed a website on it. Everything went fine for the next month and suddenly i receive an email from providers telling me that My ...

Veeam & Hyper-V Credentials and DNS

Keep in mind that i just started with Veeam (backup and replication) and Hyper-V, english also isn't my first language, so please excuse any mistakes. What i want to do is, Back-up a (standalone) ...

Domain Name pointed to name servers in US and then forwarded to a public IP in Asia

We are trying to host our website in our office. We have a very fast server with a public IP and an opensource cPanel installed. Our domain name is registered with a different provider and I couldn't ...

DNS A record seems to have propagated but ping still returns old IP

I have domain that is hosted by me. The DNS provider is dreamhost. I updated the IP address of the www.domain.com to x.x.x.200 from x.x.x.198, dnscheck show that changes have propagated correctly, but ...

Linux routing table not working as expected [or] how is this expected?

LONG QUESTION SHORT: Ping over r1-r4-r2 path works using 10.0.1.* or 10.0.2.* IP addresses, but fails if we alter the path to r1-r3-r2 using 1.0.0.* or 1.0.1.* IP addresses for the exactly same ...

ip site digitalocean to cloudflare

I have site with just an ip address instead a domain name Is it possible my site use cloudflare service? My site hosted at digitalocean My server use nginx I've been searching through the net but ...

How can I connect two routers using WDS? [migrated]

I have two wireless routers D-Link DIR-615 Wireless N 300 Router and JioFi 2, as the JioFi 2 don't have an expected coverage i was planning to extend the range, as i have an unused wireless router i ...
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How to mark packets depending on hostname?

We can mark packets on the basis of IP addresses in the following way - iptables -A FORWARD -t mangle -s 123.2.3.4 -j MARK --set-mark 1 How to mark packets depending on the hostname? I tried this - ...

Ping goes through shortest prefix

The setup I have a GW with an ipsec tunnel with a range of addresses 172.17.x.x on the other side, which is mounted on top of interface ens3. The GW is connected to a subnet with prefix 172.17.3.x (...

Can't access LAN host from the firewall

I have a problem I cant seem to comprehend, here's the thing: I want to have access to a LAN server on 192.168.100.32 from the firewall (192.168.1.100). This network is managed by eth0, and I can (...

Where IP fragments are reassembled into one fragment? [closed]

Reading about IP fragments found controversy between various teaching materials. In book: "Fragments need to be reassembled before they reach the transport layer at the destination." "The ...

Is it possible to have a non-all-ones broadcast address?

We've been developing some scripts recently for auto-setting IP address details on our embedded devices. The method involved setting both the IP address details (e.g., 192.0.0.100/24 and the ...

Check a machine's up or down status without using ping

I have a function that at the moment does a quick ping to a remote machine in the same network by doing so: ping -n 1 It then evaluates the commands success (1 or 0) in order to determine whether ...

How can I remove my ip from the blacklist ivmSIP / 24?

I checked my server IP with this tool: http://www.mxtoolbox.com/SuperTool.aspx It has appeared in the ivmSIP / 24 list. What can I do to remove my IP from this list? I have SPF records set to allow ...

How to route all traffic from a specific port to a specific network interface?

I have the following setup: A computer with two network cards connected to two different routers. The first router redirects all outside traffic coming on port 5122 to port 22. So that I can connect ...
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