internal numbers visible when browsing

[jf () gmx net]

Hi everybody,

This question may sound silly but.......

Consider the following:

internal net:          router:          Internet

172.16.1.0/24           172.16.1.252     XXX.XXX.XXX.XXX

172.16.2.0/24

172.16.3.0/24


All the subnets 172.16.yyy.yyy connect via the router to XXX.XXX.XXX.XXX

When trying to find out which information is given outside the company's
net
by Browsers (MSIE, Netscape), I found out that except from 172.16.1.0/24
the internal 
IP ( 172.16.2.yyy ..) was transmitted. 

Does that mean a risk for the company ? Remember: there is no Firewall,
just a screening router.....

thanks, jf


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