Tags: ipv6 ipv6-only ssh nmap 

Rating:

(Author's writeup)

**Goal:**
Log onto an IPv6 only host.
Knowing the syntax, you need to include the interface in order to connect to a local-link address.

**Tools:**
host, nmap, ssh, arp, ip, ifconfig

**Solution:**
1) Log into a.jetsons.tk OR b.jetsons.tk
2) Type “ifconfig”
3) Type “arp –an”
4) Type “ip neigh”
5) nmap all ipv4 and ipv6 addresses -- from a.jetsons.tk OR b.jetsons.tk, NOT from your own IP.
6) Try to login to every ipv4 and ipv6 neighbors (and ports found during the previous step)
7) The successful login command is: ssh jetson@fe80::5054:ff:fecb:1279%eth1 -p 2200

**Flag:**
flag{[fe80::5054:ff:fecb:1279]:2200}

Original writeup (https://cert.rcts.pt/).