---
name: "noip2"
section: "8"
platform: "linux"
package: "noip2"
version: "2.1.7-11"
release: "Debian 5.0 (Lenny)"
platforms: ["linux"]
url: "https://new.carta.tech/noip2"
---

# noip2(8)

No-IP.com Dynamic DNS Update Client (DUC)

## NAME

noip2 - No-IP.com Dynamic DNS Update Client (DUC)

## SYNOPSIS

**noip2** *\[ -C \[ -F\]\[ -Y\]\[ -L hosts\_groups\]\[ -U #min\]\[ -u username\]\[ -p password\]\[ -x progname\]\]\[ -c file\]\[ -d\]\[ -D pid\]\[ -i addr\]\[ -S\]\[ -M\]\[ -h\]*

## DESCRIPTION

The No-IP.com Dynamic DNS Update Client (DUC) periodically checks the local IP address to see if it has changed. If the IP address has changed, the client notifies the No-IP.com DNS servers and updates the IP address corresponding to the user's No-IP/No-IP+ configured hostname(s).

A valid No-IP.com account is required.

The client communicates with the No-IP.com server over TCP on port 8245 (outgoing).

## OPTIONS

- **-C**

  create configuration data file

- **-F**

  force NAT off

- **-Y**

  select all hosts/groups

- **-L hosts\_groups**

  select supplied hosts/groups (Example: *-L some\_domain.no-ip.com,Group1,Group2,another\_domain.no-ip.biz)*

- **-U minutes**

  set update interval in minutes (Example: Set *-U 30* for *30* minutes)

- **-u username**

  use supplied username

- **-p password**

  use supplied password

- **-x executable**

  use supplied executable

- **-c config\_file**

  use alternate path to store configuration data file (Example: *-c /path/to/noip2.conf\_file)*

- **-d**

  increase debug verbosity

- **-D processID**

  toggle debug flag for PID

- **-i IPaddress**

  use supplied address. This option is also useful to run the client once and exit.

- **-I interface**

  use supplied interface

- **-S**

  show configuration data

- **-M**

  permit multiple instances

- **-K processID**

  terminate instance PID

- **-z**

  activate shm dump code

- **-h**

  Display usage information

## FILES

- */var/lib/noip2/noip2.conf*

  Configuration data file, generated by running **noip2 -C** (binary file).

## LICENSE

**noip2** can be distributed under the terms of the GPLv2 license. A copy of the license can be found under /usr/share/common-licenses/GPL-2

## SEE ALSO

**/usr/share/doc/noip2**