Always remember that when you delete a rule the numbers above that rule are going to change. If you delete rule 2 then rule 3 will become rule 2, so if you want to get rid of both 2 and 3 you have to either run delete 2 twice or run delete 3 first and then delete 2, if you delete 2 and then delete 3 you've deleted the incorrect rule. The best bet if you're deleting rules is to always run status numbered between deletes to confirm you're about to delete the correct rule. Also, you should make a habit of creating your rules BEFORE you enable ufw. That's even more important if you're working remotely. Can't tell you how many people have shelled in to a new server setup and without thinking locked themselves out by enabling ufw without allowing ssh first.
The wifi issue has to do with the router blocking certain ports for all devices on the LAN. Some residential ISPs only allow you to use ports 80 and 443 . This drove me crazy for days and I still could not change the configuration on my router.
Hey eli it's amazing that u made the learning new technologies much in ease manner, y don't u prefer doing videos about RPA(Robotic Process Autonation)
Greetings, a query, my pc connects wlan to router and assigns me an ip for its dhcp 10.10.1.10 if I have everything configured by default in ufw and I apply the following command: ufw deny from 10.10.1.0/24 with this I block any access from the internal network to my computer so that I can avoid any attack, what else can I do in the configuration apart from denying the ping response. sorry my bad english
I'm sorry if this has been asked before. I activated ufw and read in the status that it should block everything at first, but it didn't. Is this normal, or specific to Linux Mint, or...? What do I need to do to get ufw working properly?
3:12 - I want my specific _login_ to access SSH (and FTP) regardless of my IP address (I want to access the server from other systems without granting the system specifically access), but FTP and SSH have thus far thwarted my attempts to log in from outside my LAN. :-\
@@binbashbuddy I'm using the linux box as a bbs server for a Commodore 64, traffic is only allowed in on one port. Whenever someone "calls" it triggers "Hit backspace to cont", which is normal. I have however one specific IP that attempts at least twice a day, that has been "Denied" and still manages to trigger "the hit backspace to con" on the Commodore. It seems to be automated, as it just times out and the commdore resets
sometimes the ftp service ufw doesn't let the ftp work and then when i write "ufw allow proto ftp to any port 21" it returns with "ERROR: Unsupported protocol 'ftp'". Is there a solution to my problem and why is this happening?
Very informative video and Thank you so much for Adding those UFW commands on the description, It really make life lot easier.
Thank you so much for this series. I've learned a ton so far.
Thank you for making these lessons free. God bless you brother.
Always remember that when you delete a rule the numbers above that rule are going to change. If you delete rule 2 then rule 3 will become rule 2, so if you want to get rid of both 2 and 3 you have to either run delete 2 twice or run delete 3 first and then delete 2, if you delete 2 and then delete 3 you've deleted the incorrect rule. The best bet if you're deleting rules is to always run status numbered between deletes to confirm you're about to delete the correct rule. Also, you should make a habit of creating your rules BEFORE you enable ufw. That's even more important if you're working remotely. Can't tell you how many people have shelled in to a new server setup and without thinking locked themselves out by enabling ufw without allowing ssh first.
Great info
😂😂😂nice, funny yet useful❤❤
Thanks sir , your MCSC course was very worthy for me and God bless you
i like the backgroung, Eli
Thanks a lot for these free topics
The wifi issue has to do with the router blocking certain ports for all devices on the LAN.
Some residential ISPs only allow you to use ports 80 and 443 .
This drove me crazy for days and I still could not change the configuration on my router.
Hey eli it's amazing that u made the learning new technologies much in ease manner, y don't u prefer doing videos about RPA(Robotic Process Autonation)
Great tutorial, Sir!
Greetings, a query, my pc connects wlan to router and assigns me an ip for its dhcp 10.10.1.10 if I have everything configured by default in ufw and I apply the following command: ufw deny from 10.10.1.0/24 with this I block any access from the internal network to my computer so that I can avoid any attack, what else can I do in the configuration apart from denying the ping response. sorry my bad english
Hi,
Do I need to log in/authenticate UFW every time I search the internet/run an application?
In the terminal UFW shows active.
I'm sorry if this has been asked before. I activated ufw and read in the status that it should block everything at first, but it didn't. Is this normal, or specific to Linux Mint, or...? What do I need to do to get ufw working properly?
Allowing only a specific ip-address to access does not work if the client is using DHCP right?
Most excellent. :)
Thanks for your information Sir
how to block a source port like "11211" memcache from any ip address using linux iptables
3:12 - I want my specific _login_ to access SSH (and FTP) regardless of my IP address (I want to access the server from other systems without granting the system specifically access), but FTP and SSH have thus far thwarted my attempts to log in from outside my LAN. :-\
what
txh, good vid + you have nice map
awesome video, subscribed!
cant figure out why ufw isnt working literally at all. keeps blocking all traffic no matter what rules i put in
If you're using a modem with a built in firewall you would need to open the ports there as well.
what if you want it open to everyone except certain ip's or subnets? Like if I'm using Linux as a BBS server?
It's just like allow, but you use deny
@@binbashbuddy I'm using the linux box as a bbs server for a Commodore 64, traffic is only allowed in on one port. Whenever someone "calls" it triggers "Hit backspace to cont", which is normal. I have however one specific IP that attempts at least twice a day, that has been "Denied" and still manages to trigger "the hit backspace to con" on the Commodore. It seems to be automated, as it just times out and the commdore resets
@@undergroundstudio9810 Try using iptables -L INPUT -v -n | grep "1.2.3.4" to see if it's properly added to your iptables.
sometimes the ftp service ufw doesn't let the ftp work and then when i write "ufw allow proto ftp to any port 21" it returns with "ERROR: Unsupported protocol 'ftp'". Is there a solution to my problem and why is this happening?
nevermind i did the "service vsftpd start" and it worked
(keeping this for anyone who got stuck like me)
Gotta go check the networking vids
Does ufw do its work through IPTABLES?
Yes, it's just a simpler interface
Thank you so much sir
Thanks sir
It's so simple rules like dog commands.
my system is 10 years old should I start fresh to use this Linux
Use one from a few years ago....;even 14.04 is pretty darn snappy on 10 year old system with enough RAM and an SSD...