cccam servers no clients

hi I am using ubutun sever with cccam 2.13 with OSCAM: 1.20-unstable_svn Build: r9584 Compiler: x86_64-linux-gnu-libusb-pcsc

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my oscam is udating my card & reading it ok

my cccam is connecting to the severs ok but my clients are not

any ideas

my dns is the same how do I check my server ports

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sorted it a setting had changed on my router the firewall had turned on