Re: help regarding IP address spoofing (when using nmap)
Date: Thu, 02 Feb 2023 13:29:47 UTC
On Thu, Feb 02, 2023 at 04:19:57PM +0530, Sambuddho Chakravarty wrote: > Hi All > I am a relatively newbie to FreeBSD (earlier was running > Linux). I am running FreeBSD 13.1. > I am trying to run nmap with source IP address spoofing > (for some academic purposes). It works fine with Linux > but on FreeBSD I get the following error: > # nmap -e re0 -S 192.168.17.92 -sS 143.110.249.18 -p 8080 -Pn > Starting Nmap 7.93 ( https://nmap.org ) at 2023-02-02 16:04 IST > NSOCK ERROR [0.0170s] mksock_bind_addr(): Bind to 192.168.17.92:0 failed > (IOD #1): Can't assign requested address (49) > NSOCK ERROR [0.0170s] mksock_bind_addr(): Bind to 192.168.17.92:0 failed > (IOD #2): Can't assign requested address (49) > It works fine without the source spoofing but doesn't when I use > it. I can however use my own machine's source IP address with > the '-S' option. > -- > best, > sambuddho sudo(8) or su(1) ? An address should also be assigned to a interface for it to be bound to. -- The fact that there's a Highway to Hell but only a Stairway to Heaven says a lot about anticipated traffic volume.