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How to monitor this Internet public IP of internal FTP server

4 messages in this thread

list Casedj · Wed, 2 Apr 2008 20:21:32 +0800 ·
Hi all,

We have an internal FTP server that's NATed via Cisco's PIX firewall, so it has a Internet public IP and offers public access.

But some people complain that FTP server is not stable. Depending on internal access (to its internal IP of FTP server), it seems ok. But we can't access its Internet public IP from internal network.

There maybe several possible causes, e.g. carrier's line quality, DNS resolution, etc. We want to monitor its Internet public IP of FTP server to check what the root cause is, how?

Thanks,
Case
list Buchan Milne · Wed, 2 Apr 2008 14:53:11 +0200 ·
quoted from Casedj
On Wednesday 02 April 2008 14:21:32 casedj wrote:
Hi all,

We have an internal FTP server that's NATed via Cisco's PIX firewall, so it
has a Internet public IP and offers public access.

But some people complain that FTP server is not stable. Depending on
internal access (to its internal IP of FTP server), it seems ok. But we
can't access its Internet public IP from internal network.

There maybe several possible causes, e.g. carrier's line quality, DNS
resolution, etc. We want to monitor its Internet public IP of FTP server to
check what the root cause is, how?
Determining a root cause is distinct from monitoring a service from the internet, which is also distinct from testing a service on a public vs a private IP address.

For example, we monitor services both on internal IP address, and on public IPs (the monitoring server is NAT'd behind our firewall, and can monitor the NAT'd services).

If people are interested in a hosted hobbit monitor (bbtest-net) for monitoring their services from the internet (and reporting to your own hobbit display) ... I would consider providing such a service (at a cost of course ...).

Regards,
Buchan
list Lars Ebeling · Thu, 3 Apr 2008 08:50:10 +0200 ·
I could test it for free and show the result on my server. But I don't think the result would be correct, since I am situated in sweden.

-- 
Regards
Lars Ebeling

http://leopg9.no-ip.org
Hobbithobbyist

"I am not young enough to know everything."
-- Oscar Wilde
quoted from Casedj


  ----- Original Message ----- 
  From: casedj 
  To: user-ae9b8668bcde@xymon.invalid 
  Sent: Wednesday, April 02, 2008 2:21 PM
  Subject: [hobbit] How to monitor this Internet public IP of internal FTP server


  Hi all,

  We have an internal FTP server that's NATed via Cisco's PIX firewall, so it has a Internet public IP and offers public access.

  But some people complain that FTP server is not stable. Depending on internal access (to its internal IP of FTP server), it seems ok. But we can't access its Internet public IP from internal network.

  There maybe several possible causes, e.g. carrier's line quality, DNS resolution, etc. We want to monitor its Internet public IP of FTP server to check what the root cause is, how?

  Thanks,
  Case
list Henrik Størner · Thu, 3 Apr 2008 10:54:35 +0200 ·
quoted from Casedj
On Wed, Apr 02, 2008 at 08:21:32PM +0800, casedj wrote:
We have an internal FTP server that's NATed via Cisco's PIX firewall, so it has a Internet public IP and offers public access.

But some people complain that FTP server is not stable. Depending on internal access (to its internal IP of FTP server), it seems ok. But we can't access its Internet public IP from internal network.

There maybe several possible causes, e.g. carrier's line quality, DNS resolution, etc. We want to monitor its Internet public IP of FTP server to check what the root cause is, how?
More of a network issue than a Hobbit one, really.

What I do is to have a Hobbit network probe running on a DSL connection
from home, just looking at the publicly available services. Anything
sitting on a public IP can be used, really.


Henrik