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all the ports are open on one of my internet gateway router. this is a big security vulnerability. y all these ports r open? may be DDOS attack or...plz help me.
thanks. my problem has solved. that was ICMP Unreachable problem only. i enabled ip unreachable and then scanned. it showed only four ports open.thanks...
thank you very much for ur reply.i used nmap tool from a linux machine. when i scan another router i found only two ports open. but on this gateway router almost all udp ports were open.can u suggest me any other port scanner?
