At my company, we run a Wireguard server for VPN access, specifically Firezone. While we’re quite happy with it so far, one missing feature (though I’ve heard they’re working on it for the paid tier!) is more robust logging. In particular, I’d like it so that we can log all the remote IP addresses for a given user. Read More

I was on the challenge authors team for DawgCTF 2022, the UMBC Cyberdawgs' annual competition, last weekend. We had a few hundred players, mostly from the USA, but there were plenty of international teams competing as well (congrats to the winners, neuland, H0o, and idek). Read More

A few of us at UMBC competed in UMDCTF 2022 this weekend! Here are writeups for some of the challenges: Kernel Infernal 1, Hashcash, RSI 1 and 2, Tiny, DragonPit, Gqrx, and Legacy.

DownUnderCTF was this weekend. Here are writups for: floormat, builder, substitution cipher 1, that’s not my name, bad bucket, not as bad bucket, lost n found.

The UMBC System Administration and Software Development (SAD) Club runs a pfSense VM with OpenVPN installed. For our internal splash page, I thought it would be kind of cool if it automatically determined, based on the request’s IP address, your username. Read More

The Cyberdawgs competed in UMDCTF 2021 this weekend! It was a lot of fun. Here are some writeups for all of the challenges I personally solved. Challenges sectioned off by category: RE Painting Windows It’s a Windows executable that asks for a password. Read More

I recently bought some cheap “NetApp X417A-R6” SAS drives on Ebay - NetApp X417A-R6 900GB 2.5" SAS ST900MM0036, specifically. Come on, a 900GB 10k RPM SAS drive for $12.50 seemed like a good deal to me. Intro The problem, it turns out, is that these NetApp drives have 520-byte sectors, while my R610’s PERC 6/i RAID controller apparently only takes “standard” sector sizes such as the more common 512-byte. Read More

Do you often SSH around a bunch of different hosts? I found that with several terminals open, I was easily losing track of which host I was looking at; even with the hostname displayed in the prompt, it takes a second to read it. Read More