1
vote
1answer
83 views

iptables - masqueraded NAT has delayed first hop in traceroute

I'm just in the process of setting up my Linux (Debian-based) router with a PPPoE connection via an ADSL/PPPoA -> PPPoE bridge. The connection works perfectly on the router itself but a traceroute ...
0
votes
1answer
128 views

SSH E-mail login alert if SSH port is as NAT

Can you help me with this problem please? How can I set e-mail alerting after SSH login when port 22 is NATed? I use Linux Debian 7. I have used these iptables rules: eth0 - external network, eth1 - ...
1
vote
1answer
132 views

Why aren't my iptables rules appearing in the relevant list after reboot?

I am trying to write two persistent NAT rules, which I save via iptables-save > /etc/iptables.ipv4.nat, and restore upon reboot via pre-up iptables-restore < /etc/iptables.ipv4.nat in my ...
2
votes
2answers
915 views

iptables: The “script” way or the “*filter, rules, COMMIT” way?

I'm trying to figure out how NAT and iptables work. While I'm in the trial-and-error phase of learning about it, I found two somewhat conflicting howtos. One howto uses a script to call iptables ...