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mercdecember
Beginner

block traceroute from showing isp private ip addresses

I doubt that this can be done without contacting the isp, but a traceroute to my network shows the isp private ip addresses.  Is there anything I can do on my ASA to still keep traceroute alive but block the private ip addresses?

2 REPLIES 2
Vibhor Amrodia
Cisco Employee

Hi,

By Default , traceroute is blocked thru the ASA device.

Also , can you paste the output of traceroute and what do you want to block ?

ALso , mention the address of the ASA device ?

Thanks and Regards,

Vibhor Amrodia

Andre Neethling
Enthusiast

I think you will have to contact your ISP. It is their devices that are responding to the ICMP requests. That is why the device doing the traceroute query can map every hop.

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