Classic story I.T. guy left now, no documentation indicating config on the switch.
I have Zyxel ES2024 connected to in the middle of the network passing traffic to various VLANs however I cannot get on the switch itself.It looks like management VLAN has been changed, the IP of the switch is problem – the guy was lazy all the switches has standard password. Reset is not an option as I dont have access to console cable here and I cannot really wait to get it delivered.
Any tips, advices greatly appreciated.
Best Answer
You may have some options and without knowing more information, we cannot tell you which way is best.
I would look at DHCP first. If I didn't see a lease or reservation (which I wouldn't expect to see), I would then use the scan tools for the reserved range of IPs in the DHCP scope. The fewer hosts you scan the faster the scan. I would also scan with an ssh username/password (default you said) and that makes me think that the snmp community is also set to "public". Which you could also scan for. I'd also scan for port 443 and 80, as it appears the management Web interface operates on these ports but I'd double check the documentation first and scan those ports.
Happy hunting!