Article 5GK87 Problem with leaks in IPTABLES firewall

Problem with leaks in IPTABLES firewall

by
hkjz
from LinuxQuestions.org on (#5GK87)
Hello,

there is something wrong with the firewall rules i made with IPTABLES

when i load system and load the rules to see them i got this:
Code:Chain INPUT (policy DROP)
target prot opt source destination
ACCEPT all -- 217.23.1.184 anywhere
ACCEPT all -- 217.23.1.184 anywhere
DROP all -- anywhere anywhere
DROP all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
LOG all -- anywhere anywhere LOG level warning
DROP all -- anywhere anywhere

Chain FORWARD (policy DROP)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination
ACCEPT all -- anywhere 217.23.1.184
ACCEPT all -- anywhere 217.23.1.184
DROP all -- anywhere anywhere
DROP all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate ESTABLISHED
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhereHowever, when i reload the firewall rules by hand from file, i am left with this only
Code:Chain INPUT (policy DROP)
target prot opt source destination
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
LOG all -- anywhere anywhere LOG level warning
DROP all -- anywhere anywhere

Chain FORWARD (policy DROP)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate ESTABLISHED
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhereto mitigate this problem i even used such a line in crontab
@reboot cd /path/to/file/ && ./iptables_rules_file

but it did not help.

The first part is interesting, part of curiosity, I suspect that all these files are somehow connected to underlying system functions. Should I unlock them?

The second part with iptables is more concerning - especially '217.23.1.184', which is WorldStream B.V., probably a VPN provider. I recognize the name because it sometimes shows up in my VPN as well.

But in the iptables rules it comes out of nowhere,

I will do more tests with cronetab and reboots to let you know the result.latest?d=yIl2AUoC8zA latest?i=dayNS6SBYfU:GRh188-tJg4:F7zBnMy latest?i=dayNS6SBYfU:GRh188-tJg4:V_sGLiP latest?d=qj6IDK7rITs latest?i=dayNS6SBYfU:GRh188-tJg4:gIN9vFwdayNS6SBYfU
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