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Category: Linux networking

how to test ports – Telnet, Expect, Bash, Netcat, Nmap
- https://www.redhat.com/sysadmin/stop-using-telnet-test-port
- https://news.ycombinator.com/item?id=35621441
For “security reasons” telnet and nmap are not included in the basic set of utilities present on a production server. And why would you install software, that you usually don’t need there? But occasionally these tools are needed and should be available for installation. I certainly like telnet and nmap for the described purposes.
2023-04-20
how to check (scan) for open ports from outside in Linux
- https://linuxize.com/post/check-open-ports-linux/
2021-12-13
Linux and WPA-Enterprise AKA WPA-802.1X
- https://en.wikipedia.org/wiki/Wi-Fi_Protected_Access#WPA_terminology : WPA-Enterprise !!! (WPA-Enterprise mode is available on all three WPA versions, i.e. WPA, WPA2, WPA3)
- https://en.wikipedia.org/wiki/IEEE_802.1X
- https://en.wikipedia.org/wiki/IEEE_802.1X#Linux
- https://raspberrypi.stackexchange.com/questions/22875/connecting-to-wpa2-enterprise-wifi-network
- https://www.raspberrypi.org/forums/viewtopic.php?t=247310
- https://iceburn.medium.com/raspberry-pi-connected-to-wifi-of-wpa2-enterprise-ddd5a40c0b07
- https://www.raspberrypi.org/forums/viewtopic.php?p=353961
- https://www.securew2.com/solutions/wpa2-enterprise-certificates-raspberry-pi
2021-08-15
Packt Publishing: Mastering Linux Network Administration
- https://learning.oreilly.com/library/view/mastering-linux-network/9781784399597/
2021-06-03
deprecated Linux networking commands and their replacements – net-tools vs iproute2
- https://learning.oreilly.com/library/view/mastering-linux-network/9781784399597/ – Mastering Linux Network Administration (PacktPub) !!!!!
- https://learning.oreilly.com/library/view/mastering-linux-network/9781784399597/ch02s04.html !!!!!
- https://learning.oreilly.com/library/view/linux-networking-cookbook/9780596102487/ – O’Reilly
- https://learning.oreilly.com/library/view/linux-network-administrators/0596005482/ – O’Reilly
- https://dougvitale.wordpress.com/2011/12/21/deprecated-linux-networking-commands-and-their-replacements/ – great article showing how to do modern Linux networking on the command line
- https://en.wikipedia.org/wiki/iproute2 – includes a rather compact but useful (mapping) table
- https://wiki.linuxfoundation.org/networking/iproute2
- https://wiki.linuxfoundation.org/networking/iproute2_examples
- https://lartc.org/howto/
- http://www.policyrouting.org/iproute2.doc.html
- https://www.lisenet.com/2013/finding-open-ports-and-listening-services-on-linux/
- https://www.lisenet.com/tag/netstat/
- https://linuxize.com/post/check-listening-ports-linux/ – how to check for listening ports in Linux (“ports in use”)
package / suite net-tools (including netstat) replaced (in the early 201x) by package / suite iproute2.
2021-06-03