The firewall settings of blackBerry Smartphones for servers/IP addresses of the servers of BB BB

Hi, I would like to connect my BB to our company a firewall/in-house Exchange server is IMAP or Exchange directly. To do this, I need to open some ports on the firewall, for example, IMAP, however, I would like to limit connections in the case of IMAP to the IP addresses of the servers BB, that is no one else to another IP address can access our server in IMAP. Do you know what IP addresses, the firewall may be limited to? Thank you, Guido

guidoquiram wrote:

Hi, thanks, but I certainly can limit

206.51.26.0 / 24 subnet mask = 255.255.255.0

193.109.81.0 / 24 subnet mask = 255.255.255.0

204.187.87.0 / 24 subnet mask = 255.255.255.0

206.53.144.0 / Netmask 255.255.240.0 = 20

216.9.240.0 / Netmask 255.255.240.0 = 20

67.223.64.0 / 19 Netmask = 255.255.224.0

93.186.16.0 / 21 255.255.248.0 = Netmask

in some ports only, i.e. 25 and port 143 for IMAP/SMTP, instead opening up all ports for these IP addresses? In addition, I can certainly limit only to the European servers, because I am located in Germany?

Best regards, Guido

Port-Wise; you don't know.  That said, RIM could change the IP addresses of hosts that have defined for them DNS records at any time while it is not likely, it could happen.

Why not try connections from these hosts and review firewall logs to see what networks, you must allow access to?  The recommendation of the RIM is to allow all intellectual property blocks; That's what I'd do however.

Tags: BlackBerry Smartphones

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