Error compile vaadin project

Hi all, I downloaded a project and when I compiled it I get this error, where is this IP? 10.15.51.245
I atttached pom.xml

Thanks!

Scanning for projects...
Downloading: https://maven.vaadin.com/vaadin-prereleases/com/vaadin/vaadin-bom/8.10.3/vaadin-bom-8.10.3.pom

Downloading: http://maven.vaadin.com/vaadin-addons/com/vaadin/vaadin-bom/8.10.3/vaadin-bom-8.10.3.pom

Downloading: https://repo.maven.apache.org/maven2/com/vaadin/vaadin-bom/8.10.3/vaadin-bom-8.10.3.pom

[ERROR]
 Some problems were encountered while processing the POMs:
Non-resolvable import POM: Could not transfer artifact com.vaadin:vaadin-bom:pom:8.10.3 from/to vaadin-prereleases (https://maven.vaadin.com/vaadin-prereleases): Connect to 10.15.51.245:80 
[/10.15.51.245] failed: Connection timed out: connect @ line 36, column 16
 @ 
The build could not read 1 project -> [Help 1]

  
  The project es.cic.taller:escoba:1.0-SNAPSHOT (C:\Users\se20106\Desktop\ESCOBA\Escobaaamia-master\pom.xml) has 1 error
    Non-resolvable import POM: Could not transfer artifact com.vaadin:vaadin-bom:pom:8.10.3 from/to vaadin-prereleases (https://maven.vaadin.com/vaadin-prereleases): Connect to 10.15.51.245:80 
[/10.15.51.245] failed: Connection timed out: connect @ line 36, column 16 -> [Help 2]


To see the full stack trace of the errors, re-run Maven with the -e switch.
Re-run Maven using the -X switch to enable full debug logging.

For more information about the errors and possible solutions, please read the following articles:
[Help 1]
 http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException
[Help 2]
 http://cwiki.apache.org/confluence/display/MAVEN/UnresolvableModelException

18181285.xml (5.14 KB)

10.* is an internal address. Do you have a proxy configured? What does your settings.xml look like?