Is it possible to limit concurrent session per source IP?

[alberto_cobo]

Hello,

I have a PAN-2050 installed in vitual wire reaching max concurrent session  (262143) and discarding sessions in peak hours unable to create new sessions. I would like to know if it is possible to configure or create a rule to limit the max concurrent session per source IP. Or maybe per appication.

I couldn´t find information abour that in Admin or Command Guide. Does anybody have experience with similar issue?

Thanks.

[jleung]

Yes it is in Nice.

[migration]

Hi,

"..based on Source IP..." ??

How can I create a policy to rate limit a DoS attack if I don't know the SrcIP?

I thought it could be DstIP based, to control and differentiate better the victivm of attacks, leaving "ANY" as SrcIP.

Is it correct, isn't it?

Thanks

[mderksen]

Hi,

The policy will be based on the check on the number of connections per source IP. So you do not need to know the source IP but you can say each source IP cannot have more then x amount of connections.

What you also can check is the sessions that are active. If you reach the limit of session you might want to decrease the timeout on DNS for example. This can lead to a fewer number of active connections.

Marcel

[migration]

Uhm,

and what about if I need to have different rates for different services, for example 1000 max sessions toward a WEB server and 2000 max sessions toward a DNS server?

And also, If I have 200 different SrcIPs wich make 10 sessions per second each toward the same DstIP I have a total of 2.000 sessions per second but only 10 sessions per second from each SrcIP...so It's not useful to limit by SrcIP, imho.

Does 4.0 achieve this?

So, Can I do DoS policy based on SrcIP, DstIP and application and rate limit all this component?

Thanks

[mderksen]

You can build different rules based on the destination address but limit the connections per src-ip. It would be a rule based configuration like you have at the moment for the security rules, nat rules etc.