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Forums › Vodafone New Zealand, TelstraClear and ihug › Why is Zone Alarm blocking 169.254.33.9?


35 posts

Geek
Topic # 112736 18-Dec-2012 18:40 Send private message

I have recently dumped my Vodem for a naked package (no home phone) complete with wireless router; recently Zonealarm has been blocking traffic from 169.254.33.9. Is there something amiss?

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BDFL
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  Reply # 734502 18-Dec-2012 18:43 Send private message

I've change the subject to something meaningful.

This address is a reserved address ("link local"). Routers shouldn't be forwarding this from the Internet to your LAN, so it should be something internal. 

Check you router configuration - what's the IP address for your router and DHCP?





Mauricio Freitas (Geekzone Admin, Devil's Advocate, my blog, technology disclosure, my tweets, Web Performance Optimization) 

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35 posts

Geek
  Reply # 734521 18-Dec-2012 19:22 Send private message

Thanks Mauricio

192.168.1.1
DHCP enabled

These are the vodafone defaults, that's why I was worried about thye 169. address didn't appear to be from my lan?!



35 posts

Geek
  Reply # 734539 18-Dec-2012 20:17 Send private message

Seems to be approximately every 30 minutes and from a different Port (increasing numbers)

mjb

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  Reply # 734542 18-Dec-2012 20:23 Send private message

A 169.254 address is self-assigned by a host when DHCP requests go without response. the subnet is not routed on the wider internet, so it must be coming from your LAN.

try checking your arp cache when packets arrive. that'll help you by at least identifying the hardware address (MAC address) of the offending device. (use "arp -a" in a cmd.exe window).




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35 posts

Geek
  Reply # 734596 18-Dec-2012 21:32 Send private message

Did you mean at the time ZoneAlarm notifies? All I can see is: 
C:\>arp -a

Interface: 192.168.1.3 --- 0x2
  Internet Address      Physical Address      Type
  192.168.1.1           20-f3-a3-ce-d0-6a     dynamic



35 posts

Geek
  Reply # 734606 18-Dec-2012 21:48 Send private message

Ah,

If I try it whne ZoneAlarm popsup, I get

Interface: 192.168.1.3 --- 0x2
  Internet Address      Physical Address      Type
  192.168.1.1           20-f3-a3-ce-d0-6a     dynamic
  192.168.1.2           00-12-f0-3a-0b-07     dynamic

the 1.2 address is the laptop on wireless (thru the router)

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