How can I block all traffic to PlayStation network?
master lfc6 asked: Guys I have multiple servers with OpenVPN installed on them and they are all getting suspended left and right due to abuse reports from PlayStation network . …
DNAT to another hidden port on same host
user12304836 asked: I am hoping to use iptables to silently redirect incoming traffic arriving at a privileged port on the public eth interface (public IPv4 address) to a hidden unprivileged …
Deleting iptables rule is erroring with illegal operation
BT643 asked: I’m new to iptables but I’m trying to remove a rule based on posts I’ve seen online using the following command: # /sbin/iptables -D INPUT 1 –protocol tcp …
Setting Up Fail2Ban
Abrar Hossain asked: I am new to fail2ban. I want to setup Fail2Ban such that it bans an IP for one hour on two failed login attempts. I have the …
Ipset with Iptables with large list of IP ranges (CIDR)
CvRChameleon asked: I have read some answers here about blocking IP address ranges, and have already used iptables for this purpose before. It is suggested to use ipset in combination …
nftables mangling without NOTRACK: what can happen?
Einheri asked: I’m experimenting with stateless NAT using nftables. On the page about statelessly mangling protocol fields, the author says: Keep in mind the interactions with conntrack, flows with mangled …
IPTables causes conflict with Fail2Ban
IRGeekSauce asked: OS: Ubuntu Server 18.04 Fail2ban: v0.10.2 I am trying to understand a bug with my Fail2ban installation (I believe from my own making). I have a cron job …
Why is this IP6tables configuration blocking IPv6 traffic?
Houman asked: I’m not experienced with IPv6 and am running into a strange situation where I can’t get the current IPv6 by running this curl command: curl -6 ifconfig.io It’s …
Limit IP connection for specific port in forward traffic
Amin asked: I have a server on which I have done port forwarding. This means that each user connects to the server with a dedicated port and the traffic sent …
duplicate packet to another local host(SIEM)
Swannie asked: We have a Central Syslog server that we use to collect all logs from our hosts and recently got a SIEM that we also want to collect the …