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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.

IP (Internet Protocol) is a protocol which encapsulates data for transit across the Internet and encodes its source and destination addresses, among other parameters. It implements the network layer (layer 3) of the OSI model.

Questions related to IP (addressing, routing, and protocol issues) fall under this tag; questions merely containing an IP address do not.

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Public IP not resolving

I have a Debian/Proxmox sever running and trying to add a public IP which is not resolving and im trying to figure out if its a config issue or out IT network infrastructure (which we do not manage) causing the issue. The server ip settings are…
user6858980
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Is it possible to identify a proxy sever (IP & other headers) as the user who originated the request?

Is it possible to identify a proxy sever (IP & other headers) as the user who originated the request? Example 1 (Standard use case): I have a proxy server a.com that proxies all requests to b.com. Traditionally b.com will receive an X-Forwarded-For…
Eric Uldall
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cannot ping a single device through route

I have the following topology: /- D1 G1 -- G2 < \- D2 G2.eth0 (10.0.0.105) is on the same network as G1.eth1 (10.0.0 network). G1 can ping G2 and visa-versa. D1 and D2 are connectable via G2.eth1 (203.0.113 network). G2 can…
pstanton
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Synology Route traffic to Docker

I have: +------+ +-------------+ | +NIC1 (192.168.1.100) <--> Router <--> (192.168.1.2) NIC1 + | | PC | | DSM …
AnD
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Can you please explain how to use Floating IPs in an event of downtime?

I recently came across floating IPs in DigitalOcean and I am not really sure I understand how they work. I have assigned one to my droplet. The official documentation says that we can quickly reassign the floating IP to another droplet in the event…
Naser Mohd Baig
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IPv6 configuration missing in interface config file

When I use ifconfig command I get the following output: eth0 Link encap:Ethernet HWaddr 2C:59:E5:49:54:10 inet addr:172.16.128.132 Bcast:172.16.128.255 Mask:255.255.255.128 inet6 addr:…
Vishal Sharma
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Why is my Azure server's IP address different from its public IP?

I don't know if this is Azure specific issue or it is normal to have different IP address assigned to the interface from the public IP address for the same server. I use a public-ip address as mentioned on the Azure portal to ssh into my machine.…
pg2455
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IP route subnet via private IP

I've got 2 servers running Debian Linux: Server 01 with private IP 10.0.10.10 on eth0 Server 02 with private IP 10.10.10.10 on eth0, and also subnet 100.0.0.0/10 on tun-test From Server 01 I am able to ping Server 02 on 10.10.10.10. But I would…
Alfred Balle
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How do you port forward with Anycast?

I try to Forward a Port from an Anycast IP (111.111.111.111), which has multiple POP's and the Port should be then forwarded to a single Unicast IP (10.0.0.1). All of them are reachable over a VPN, for forwarding the traffic. There is a service…
Ne00n
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Unable to get IP address for multiple ports/NIC

I have HP Ethernet 1Gb 4-port 331i Adapter - NIC installed on my machine and when I configure IP addresses for the ports/NICs, I get answer from only 1st port/NIC and other 3 ports/NICs do not respond. I tried with DHCP config & static but no avail,…
Farmi
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ifconfig displays public IP address

I've logged via ssh to remote host. When I type ifconfig output contains: ens160: flags=4163 mtu 1500 inet 106.120.101.39 netmask 255.255.255.128 broadcast 106.120.101.127 IP address 106.120.101.39 does…
k13i
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Named multicast address

Is it possible to name a multicast or broadcast address? Usually for a single machine I'd put a line in /etc/hosts. Will that work for a multicast address?
z0r
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IPtables Logging for services

I am logging all incoming and outgoing IP connections and ports to my Linux server with IPtables LOG. Now, I wish to log the services to which these IPs connects in server. Example, if the connection is to port 80, then log service name as httpd. Is…
Arun Krishnan
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Apache, mod_authz_host, ineffective 'Allow from' clause

I am trying to restrict access to a part of my website to only a specific machine within the local network using mod_authz_host. https://httpd.apache.org/docs/2.4/mod/mod_authz_host.html My config looks like this: Order…
Martin Vlk
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I've setup a VPN on Openvpn using a VPS, and I would like to change the VPN IP address from the VPS IP address to the VPN IP which Openvpn has given

I've set up a VPN on OpenVPN using a VPS, and I would like to change the VPN IP address from the VPS Server IP address to the VPN IP which OpenVPN has given. I know its a bit confusing but right now for example when I have connected to the VPN, my…
Sheryar Khan
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