H Everyone
I am experiencing an issue on a Vigor 2850n router, where at some stage it stops passing DNS responses into the network which stops resolving websites on all internal devices and SBS2008 server. Skype and all applications which do not rely on dns are fine.
Mail Alert from Router shows the following:
2013/04/30 17:02:48 -- [DOS][Block][udp_RP_flood, timeout=10][208.67.222.222:53->xxx.xxx.xxx.xxx:36215][UDP][HLen=20, TLen=387]
2013/04/30 17:02:50 -- [DOS][Block][udp_RP_flood, timeout=10][208.67.220.220:53->xxx.xxx.xxx.xxx:55677][UDP][HLen=20, TLen=80]
2013/04/30 17:02:51 -- [DOS][Block][udp_RP_flood, timeout=10][208.67.222.222:53->xxx.xxx.xxx.xxx:36215][UDP][HLen=20, TLen=387]
2013/04/30 17:02:53 -- [DOS][Block][udp_RP_flood, timeout=10][208.67.222.222:53->xxx.xxx.xxx.xxx:59538][UDP][HLen=20, TLen=192]
2013/04/30 17:02:55 -- [DOS][Block][udp_RP_flood, timeout=10][208.67.222.222:53->xxx.xxx.xxx.xxx:37253][UDP][HLen=20, TLen=136]
2013/04/30 17:02:57 -- [DOS][Block][udp_RP_flood, timeout=10][208.67.222.222:53->xxx.xxx.xxx.xxx:51125][UDP][HLen=20, TLen=114]
2013/04/30 17:02:59 -- [DOS][Block][udp_RP_flood, timeout=10][208.67.222.222:53->xxx.xxx.xxx.xxx:64777][UDP][HLen=20, TLen=186]
where xxx.xxx.xxx.xxx is our public IP
obviously i can stop this by stopping DOS protection, which i dont really want to do, so would you recommend something to tackle this issue please
