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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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Disable ipv4 with /etc/sysctl.conf | GNU/LINUX Debian 11

I can disable ipv6 as su in /etc/sysctl.conf on my GNU/LINUX Debian 11 with net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 and restart with /sbin/sysctl -p when i try to disable ipv4 in /etc/sysctl.conf and restart…
Z0OM
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Filter CGNAT IPs from Log

I want to identify heaavy users on a web API I would like to ignore CGNAT IPs . I looked at https://www.rfc-editor.org/rfc/rfc6598 Is this mandatory or can an ISP use any given IP ? Is there a List of IP Adresses used for CGNAT ? thanks
jan ohms
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What things should I consider when identifying and rate limiting bots?

// Not sure if this question is best fit for serverfault or webmasters stack exchange... I am thinking to rate limit access to my sites because identifying and blocking bad bots take most of my time. For example I have bots accessing the site by…
adrianTNT
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Check if IP Belongs to a CIDR

We have a list of CIDR's 1.10.10.0/24 5.154.0.0/16 5.181.219.0/24 23.90.68.0/24 31.40.214.0/24 I want to check if a IP for example : 23.90.68.56 belongs to any of the above CIDR's. If yes then we get the output of that CIDR. According the above…
ph3ro
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Host ID's on Network not in succession of 'active' or established devices?

Disclaimer: I am new to networking. I ran a arp -a command on Terminal to establish what devices are currently active on the network. I was returned a number of devices with Host ID's that were not in succession. For example, I had 1, 18, 19, 24, 40…
BuiltByDan
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Cannot assign different IPs for outgoing email using Postfix and Webmin

I'm trying to run Mac Mini M1 as a SMTP mail server. I have 5 static IPs, each on its own network interface, with 5 different domains (with the corresponding PTR records). I have installed Webmin successfully, and I'm trying to configure the mail…
Svetoslav Genov
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Can't configure unique IPs in Parallels VMs

I have 4 VMs running Ubuntu within Parallels (host machine is OS X). I am trying to set up SSH so that I can SSH into them, but I can't connect to them individually. They are all reporting the same IP with ip -a. I've tried it with both the Shared…
T-House
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Cloning a UTM virtual machine - IP address the same?

Can someone point me in the right direction on how to configure the IP address of cloned VMs with UTM? When I create a new UTM VM, the IP address is different. This is fine. When I clone an exisitng UTM VM, the IP is the same as the clone. My…
Vinn
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Iptables, Limit the number of IPs connected to a specific port per second

iptables can limit connections per ip at the same time with the --connlimit command . but I want to know is there a way to limit connected IPs at the same time? for example, if you limit connections to 30, then multiple IPs can connect to port,…
A H
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Many external "On-Link" IPv4 addresses shown as Persistent routes in Windows

When I run route print on my "normal" Windows 10 Pro machine, the "Persistent Routes" section lists 136 (!) Network addresses with a /32 mask, and "On-link" as the Gateway. Many of the IP addresses seem to belong to Microsoft or Akamai, but there…
mivk
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Instance created in multipass without IP address

The error is the following, when creating an instance in multipass it is created without an IP address. I run the multipass launch command, and the instance is created normally. C:\Windows\system32>multipass launch Launched:…
Esteban_G5
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Apache's remoteip module does not populate the client_ip

In an intranet environment, I have a relatively involved scenario, all on the same server: IIS server acting as a reverse proxy listening on 443 forwards matching requests to localhost:1080/redmine Apache reverse proxy is listening on 1080 forwards…
jfix
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Will the raw table ever receive fragmented IP packets?

Assume the conntrack module is loaded (thus nf_defrag_ipv4 is loaded). Will there ever be a situation in which the raw table receives a fragmented packet? In particular, will a BPF rule (loaded through xt_bpf) like this ever return true? ldh…
forest
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Changing IP range that holds the Primary Domain Controller

My domain includes a few /24 ranges over an MPLS and we've recently acquired a business which uses the same /24 range as my Primary domain controller (172.17.0.0/24). Because of this clash, I have 2 options. Change the range of the acquired…
aufly
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Can I use commercial VPN service with optional Dedicated IP to Host a Website?

Many commercial VPN service providers offer a new option called "Dedicated IP." While I understand the purpose is to get around geoblocks of streaming services and to defeat their VPN detection mechanism, I was wondering if anyone was successful in…
masiton
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