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Problem for Nokia IP380 Firewall
How to identify a IP380 is online
Hi,
We know the ping test is blocked be default at IP380 firewall. How can I identify the firewall is still on-line. I only have the IP of firewalls.
Thanks.
Cliff
We know the ping test is blocked be default at IP380 firewall. How can I identify the firewall is still on-line. I only have the IP of firewalls.
Thanks.
Cliff
Comments:
Jun 16, 2009
- @jcoady Thank you. But none of above method works after I tried to telnet the ports 22,80, or 21. Is there any policy blocks this. My PC is in the safe subnet of firewall. However, I don't have any management/monitoring permission. I only have their IP address.Solution #1
posted on May 21, 2009
If you know the IP address then you have two choices:
Indirect method: Test a 'listening' port on the firewall. For instance, if there is a web server behind the firewall, check HTTP (TCP/80) or FTP (TCP/21).
Direct method: If it is enabled for remote management you can check the remote management port, typically SSH (TCP&UDP/22).
If you've never done port level testing there are a number of ways to do that. Microsoft provides a commandline tool named portqry: http://www.microsoft.com/downloads/details.aspx?familyid=89811747-C74B-4638-A2D5-AC828BDC6983&displaylang=en
As well as a gui interface for it: http://download.microsoft.com/download/3/f/4/3f4c6a54-65f0-4164-bdec-a3411ba24d3a/portqryui.exe
For instructions please visit http://support.microsoft.com/?kbid=310099.
Which method did you use?
I forgot to mention using SNMP queries, but it sounded like you were looking for a less direct method of identifying the firewall status.
For instance, if a web server is allowed passage, you could check port 80/TCP against it's IP (not the IP of the firewall).
Do you have any insight into what is allowed through? It helps to know both outbound and inbound allowed activity. In some rare instances a firewall is established with no allowed activity, waiting for that first request. Maybe you could request passage for a couple of devices outside your firewalled area and use them to test against.
Good Luck!
Indirect method: Test a 'listening' port on the firewall. For instance, if there is a web server behind the firewall, check HTTP (TCP/80) or FTP (TCP/21).
Direct method: If it is enabled for remote management you can check the remote management port, typically SSH (TCP&UDP/22).
If you've never done port level testing there are a number of ways to do that. Microsoft provides a commandline tool named portqry: http://www.microsoft.com/downloads/details.aspx?familyid=89811747-C74B-4638-A2D5-AC828BDC6983&displaylang=en
As well as a gui interface for it: http://download.microsoft.com/download/3/f/4/3f4c6a54-65f0-4164-bdec-a3411ba24d3a/portqryui.exe
For instructions please visit http://support.microsoft.com/?kbid=310099.
Comments:
Jun 15, 2009
- Are you now able to monitor the firewall?Which method did you use?
I forgot to mention using SNMP queries, but it sounded like you were looking for a less direct method of identifying the firewall status.
Jun 18, 2009
- It sounds like your only option is passive monitoring, which means you must know what is allowed to pass through the firewall and test communicating with the 'allowed' device. It helps to have more than one to test against, since the firewall could be 'up' and a single device could be offline. That's where the port tests mentioned above will come in handy.For instance, if a web server is allowed passage, you could check port 80/TCP against it's IP (not the IP of the firewall).
Do you have any insight into what is allowed through? It helps to know both outbound and inbound allowed activity. In some rare instances a firewall is established with no allowed activity, waiting for that first request. Maybe you could request passage for a couple of devices outside your firewalled area and use them to test against.
Good Luck!
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