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Network Protection: Firewall, NAT, QoS, & IPS are udp ports open?

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are udp ports open?

seb-zrh over 22 years ago

hoi together,

i am wondering why my udp ports show open scanned with different scanners (nmap etc). i did two rules at the end of my rules: all - all_udp-ports - all log drop and
all - all - all log reject

thanks for help!

seb

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0 techno.kid over 22 years ago

If you are using nmap for scanning and do this for a RANGE and NOT for single ports you get this kind of confusing result.

techno.kid
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0 Teren over 22 years ago

Also, with nmap, it automatically scans the tcp port. Make sure you specify that you want to scan UDP ports and not tcp. I think that's what the problem is, try it and find out!
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