fight the enemy separately
Bottom score 100 branch Cannot close port 21 22 80 Cannot modify flag
ubuntu（root/toor）：startx（ Interface ）172.16.101.1
linux（root/123456） 172.16.101.250
Get someone else's flag Submit and get points （/root/flagvalue.txt）
use putty connect bt5
defense 30 minute
* Use the attack machine to scan your target , Check which ports are opened on the target !
Found the target open 21,22,23,80,111,785,3306,10000 Rear large port
in the light of 21（ftp） Port attack
Unable to jump out of anonymous user's folder
Try to use ordinary users to log in linux,linux View native users
There are ordinary users admin,guest/123456
use admin To land on someone else's target
ssh attack
Get someone else's conversation
Got it flag
telnet attack
reinforce 21,22,23
Change passwords for all users
80 Port attack method
reinforce
10000 How to attack large ports in the future
reinforce
* clear iptables Default rule
* The newly added default rule does not allow anyone to enter
* The newly added default rule does not allow any forwarding
* New default rule allows all to go out
* allow 22 Port in
* allow 21 Port in
* allow 23 Port in
* allow 80 Port in
* Save firewall rules
* Restart firewall
Technology
Daily Recommendation