- Optimized for 700 Mhz (Raspberry Pi 2)
- Optimized for SD card longevity
- Lightweight web server
- Hardware Firewall / VPN client
- Simulating network environments for CCENT/CCNA ICND1-2
- Pentesting practice targets
- Isolated true random number collector
- Hardware security module
- Setup SSH key and disabled password authentication
- Update package information (apt-get update) and install ufw
- Configure firewall and enable (i.e. ufw allow ssh; ufw enable)
- Setup a RAM drive at /var/tmp and replace /tmp with symlink
- Use CDNs or Service Workers to reduce disk I/O in web applications
tmpfsto redirect logging and temporary directories to RAM
rsyncscript to incrementally copy files to document root
If you're using a crossover cable (you can also use a straight-through cable to connect to a host's ethernet port if it supports Auto-MDIX) and are now just looking for your Pi's link-local address, you can use a network protocol analyzer or traffic inspection tool (i.e
tcpdump) and look for DNS traffic.
Note: This works best your other network adapters temporarily disabled to filter normal LAN/Internet traffic.
$ sudo tcpdump ... 18:33:21.857183 IP 169.254.59.204.mdns > 220.127.116.11.mdns: 0*- [0q] 4/0/0 (Cache flush) PTR raspberrypi.local., (Cache flush) A 169.254.59.204, (Cache flush) PTR raspberrypi.local., (Cache flush) AAAA 0000::0000:0000:0000:0000 (...)
The link-local address of this Pi is 169.254.59.204.
$ ssh [email protected] [email protected]'s password: Linux raspberrypi 4.19.58+ #1245 Fri Jul 12 17:20:08 BST 2019 armv6l The programs included with the Debian GNU/Linux system are free software; the exact distribution terms for each program are described in the individual files in /usr/share/doc/*/copyright. Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent permitted by applicable law. [email protected]:~ $