1
vote
1answer
718 views

Port 443 is open but IP tables denies it

When I run the following command on my Ubuntu instance: $ nmap host I see that port 443 is open: Starting Nmap 5.21 ( http://nmap.org ) at 2013-03-19 05:36 PDT Nmap scan report for [host redacted] ...
1
vote
1answer
112 views

Windows AdvFirewall and nmap scans

I come from a Unix background but got the task of configuring a Windows firewall on a public facing server. I find awkward that any nmap scan I perform against the public IP reports all TCP ports ...
0
votes
2answers
226 views

pingdom like service to constantly monitor my firewall open ports

I have pingdom setup to constantly make sure my websites are up and let me know when they are not. Is there a similar service that will constantly monitor my firewall externally, and let me know when ...
1
vote
2answers
753 views

Port is open on machine A but it is not visible from machine B in Nmap

I have a virtualized CentOS machine with a software that is listening on port 8080. I have turned off SELinux and flushed all iptables (so now there are no rules set). I have checked with netstat -nap ...
0
votes
1answer
171 views

nmap external localhost with iptables

I have a status monitor that I wish to set up using nmap to show all my externally open ports. Naturally nmap came to mind. Unfortunately I use an iptables firewall and allow all traffic on the ...
3
votes
1answer
124 views

Identify where a port is blocked

I'm trying to find out where a port is being blocked by a firewall; either en-route to a host or by the host itself. If I run nmap I can see that the port is filtered. However, this could mean by the ...