SuSEfirewall and licq 1.1.0

hi list, i am using linux 7.1 pro with a 2.2-kernel. i masquerade my internal network with the firewall (ip range 192.168.0.1 to .4); and i use an isdn dialup connection. i thought that the firewall _really_ masquerades my lan; but when i watched myself being online from a friend's box running licq 1.1.0, licq told me - apart from the external ip beginning with 62. - my private ip :( if licq is capable in looking behind that firewall, how can i assure that _real_ hack programs cannot do this ... i suggest that icq delivers all ips that it can gather; but don't other apps also??? how can i tell the firewall not to submit internal ip names - well - is the fw able to do it? -- icq# 67532578; return 0;}