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Netgear DG834 security issues. Adding a 'Block All''

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stduc

Programmer
Nov 26, 2002
1,903
GB
Whilst researching the various issues I am currently having with my Netgear DG834 ADSL/router I stumbled on various sites that suggested it was necessary to add a general "block all" rule as apparently the default of 'yes any block always' to incoming traffic does not block all.

Nothing wrong with seeing what happens I thought and so I created a service I called ALL that included TCP & UDP and set it for ports 1 - 65535 - I then added that to inbound as block always any-any.

No problems ensued and then I got this in the morning log.

TTCP Packet - Source:89.242.219.53,4821 Destination:89.242.253.203,135 - [ALL rule match]
TTCP Packet - Source:89.242.96.201,2205 Destination:89.242.253.203,139 - [ALL rule match]
TTCP Packet - Source:89.242.243.190,21174 Destination:89.242.253.203,445 - [ALL rule match]
ICMP Packet - Source:83.30.75.49 Destination:89.242.253.203 - [ALL rule match]
TTCP Packet - Source:89.242.219.53,1343 Destination:89.242.253.203,139 - [ALL rule match]
TTCP Packet - Source:89.242.247.3,3663 Destination:89.242.253.203,135 - [ALL rule match]
TTCP Packet - Source:89.241.255.74,1803 Destination:89.242.253.203,445 - [ALL rule match]


That is just a short sample. The log was huge.

My questions is this - what are they and how come they were coming up my line? The destination address is not mine!

I am glad I have now blocked them anyway. Other people with a Netgear router may care to apply a similar rule. Or maybe someone will reveal that I have been wasting my time & worrying over nothing! LOL
 
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