Daily Hack
A fresh 60-second challenge every day. Solve it, earn XP, and keep your streak alive.
The gateway that appeared
Users on the office VLAN started complaining that the intranet looks slightly wrong, and the network team pulled a morning of DHCP and ARP events off the access switch. Counting DHCP servers will not solve this: there are genuinely two on this network, a primary and a failover, and both are supposed to be there. What matters is not how many servers answer but what they hand out. One of the responders is telling clients to route through an address that is not the site router, and because it also answers faster than the real servers, the clients that hear it take its offer and keep it. Work out which default gateway is the imposter and submit its IP.
Play freely - sign up to submit your answer and earn XP.