Starting with this essential command:
> time awk < IPv4.txt '{ print $2"\t"}' - | sudo nmap -6 -T4 --max-retries 8
- > Intm.IPv4.txt
Take my word for it: Works great, no hassles, but time-consuming for the
computer; typically
about a minute for each address in the file, which generally is several
thousand fields in length.
Now introduce the Modern Age:
> time awk < Question-2Col-IPv6.txt '{ print $2"\t"}' - | sudo nmap -6 -T4
--max-retries 8 - > Intm.Question-2Col-IPv6.txt
Not so great; here's the response, truncated greatly:
>> setup_target: failed to determine route to 2a0d:7c40:3000:98c::2
>> WARNING: No targets were specified, so 0 hosts scanned.
I tried simplification:
> time sudo nmap -6 -iL Question-IPv6.txt > Intm.Question-IPv6.txt
One-at-a-time might work, but there are thousands to be scanned.
The first file has a column $1 that represents a count of the number of
instances in the dataset
and a column $2 of IPv6 addresses; there aren't any hostnames in this
dataset, which is the point
of my exercise.
The second file is a simplified version with only a single column of some
typical IPv6 addreses.
There aren't many Recent Visitors found with my searches that have IPv6
addresses, but there surely
will be ... have to be ready for those ! I used nslookup on a few with
decidedly mixed results.; nMap
does much better with recalcitrant IPv4 addresses in datasets which have not
had their IPv4 addresses
gratuitously converted to [unresolvable] hostnames.
George Langford
2 2804:4c30:c002:13f7::1
2 2a00:1838:36:37d::68ac
2 2a00:7c80:0:36::b436:25e8
2 2a01:4f8:c2c:3f1d::1
2 2a03:a140:10:2340::1
2 2a05:7cc0:0:185:34:52:8:1
2 2a07:3b80:0:d95b:68a9:5368:c459:7072
2 2a0d:7c40:3000:98c::2
2a03:b0c0:3:e0::1f9:1
2a04:ad80:1:150::784b
2a05:7cc0:0:185:34:52:8:1
2a05:7cc0:0:185:80:130:250:1
2a05:9403::3f
2a07:3b80:0:d95b:68a9:5368:c459:7072
2a0d:7c40:3000:98c::2
