Protecting iperf server on internet

Posted on 2014-11-14
Medium Priority
Last Modified: 2014-11-18
I need to set up iperf clients connecting to a server on the internet.
This needs to be secured so that only the clients can connect and run the test.

However, I have not found many examples of how to set this up on a public server.
The clients all connect to the server which is using htpasswd along with php authentication.

Could this be done using htpasswd or perhaps in php?
Question by:projects
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LVL 62

Accepted Solution

gheist earned 2000 total points
ID: 40444829
iperf has no access controls. adding firewall will cripple the results.
Only way I see is that you start it when you measure performance and stop after.

Author Comment

ID: 40444983
It doesn't have any access controls but I was wondering if I would wrap it with something else, like php?

Author Comment

ID: 40445147
I wonder if php could be used to block/allow a port? That way, I could leave the port on, but use a function in php to allow or deny a remote to use the iperf port.

Of course, that implies that php would also control that port.
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LVL 62

Assisted Solution

gheist earned 2000 total points
ID: 40445649
It has to run on pure network stack. any wrapper will cut the results to interaction between wrapper and iperf and will not be representative of network link you have.

Author Comment

ID: 40448301
I don't mean a wrapper, I mean where php controls the port based on remote IP.
If the remote device authenticates, php could look up it's IP and allow it access to iperf.

Is if possible to run two firewalls on the same system? For example, iptables is already running on the server. Would it be possible to not have iptables block the iperf port but have another firewall which is controlled by php for that port alone?

Author Closing Comment

ID: 40448695
These are good points being made. My solution will be to maintain a list of allowed IPs to the service using another application.
LVL 62

Expert Comment

ID: 40451020
If your firewall supportes any kind of port knocking it might save you from maintaining the list.
Say ping, then connect to port 28 and 155, then it opens connections to iperf - if you think your firewall can do it - just make it do its job

Author Comment

ID: 40451028
In this case no, there is no firewall in front of the server, only iptables.

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