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MichaelNZ

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  #2017864 17-May-2018 19:14
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sbiddle:

 

And most importantly remember to firewall off the PPPoE client. If you don't you'll be own3d within hours by a DNS amplification attack.

 

I have done a quick Google and can't find any info on this exploit. Do you have a link please? Thinking about this in terms of the OSI model, I can't get my head around what you are saying.

 

I'm hoping someone will send me a complete config which I can study.





Integrity Tech Solutions @ Norsewood, New Zealand


chevrolux
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  #2017865 17-May-2018 19:18
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The DNS forwarder listens on all interfaces, so if you don't firewall off the WAN interface, your router can be used as a DNS forwarder. I put this to the test one day and within the hour it started being smashed.

 

Will flick you a PM with a link to a config.

 

Also, the default config that gets loaded on startup is a pretty good guide too.


 
 
 
 


MichaelNZ

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  #2017866 17-May-2018 19:22
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chevrolux:

 

The DNS forwarder listens on all interfaces, so if you don't firewall off the WAN interface, your router can be used as a DNS forwarder. I put this to the test one day and within the hour it started being smashed.

 

 

Ah, ok. I'm with you now.

 

So can I simply just turn this off?

 

Do what I have always done which is a combination of running local DNS, DNS server IP by DHCP and manual config.





Integrity Tech Solutions @ Norsewood, New Zealand


chevrolux
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  #2017878 17-May-2018 19:47
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MichaelNZ:

 

chevrolux:

 

The DNS forwarder listens on all interfaces, so if you don't firewall off the WAN interface, your router can be used as a DNS forwarder. I put this to the test one day and within the hour it started being smashed.

 

 

Ah, ok. I'm with you now.

 

So can I simply just turn this off?

 

Do what I have always done which is a combination of running local DNS, DNS server IP by DHCP and manual config.

 

 

Yea thats fine too...

 

/ip dns set allow-remote-requests=no


RunningMan
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  #2018876 19-May-2018 11:34
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hio77:
RunningMan:

 

No way of config for modem parameters then? VPI/VCI etc?

 


Looks to me like they don't do atm.

 

To answer my own question, looks like there is some limited support for ATM built in - a number of default configs accessed by VLAN. VPI/VCI 0/100 is amongst them, but no VC-MUX.

 

Source.


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