Technical information


Manufacturer’s documentation of the CPE:

NOTE that:

  • terminology may differ, e.g. ‘CPE’ is referred to as ‘RG’.
  • some settings may have been protected by network management; these cannot be changed by the tenant.

The information below is intended for tenants knowledgeable in computer networking. 

DNS, router(s)

central router

A local problem may be detected by pinging the local router: 145.90.***.1


The *** number can be derived from the third digit of your own IP addess.
It is identical, or the even number which is 1 lower.



  your IP adres local router
3rd digit is even
3rd digit is odd

Your IP address may be found using e.g.


SSHnet has a central mailserver which has to be used when sending email using SMTP. This has been configured in order to avoid vulnerabilities, that may arise from running your own SMTP server.


When using nothing but webmail (like,, etc.), this does not apply and you may skip reading this section.


Settings of your email software


Configure in your email ‘client’ software (such as Eudora, Outlook, Thunderbird, Opera Mail, etc.):

  • outgoing mail server:
  • port number: 25 (no encryption or using TLS) or 465 (using SSL)

E-mail processing by

  • check on virus/malware
  • check on executable attachments (like .exe .vbs .scr .bat .cmd .com .dll)
  • rate limiter on number of connects to the mailserver, number of recipients and size of the email
  • check on a valid sender address

E-mails failing these checks are not sent; you will receive a notification. 


In SSHnet the DNS port (port number 53) is inaccessible from outside. This has been done to mitigate vulnerabilities of any DNS servers running on equipment of tenants.