Help tweaking my iRule

[jlb4350]

Hello all. I have an oubound virtual server that allows all traffic and protocols to any address, it's a wildcard outbound. I'm wanting to use an iRule to block outbound connections to Russia using data referenced in a data group. I created the following data group and iRule, but it ended up blocking everything when I attached it to my wildcard outbound VS. Are there any iRule gurus could can help me tweak this? Any help is much appreciated!

Data group:

iRule:

[David_Larsen]

You are running into a formatting issue with your datagroup.  The datagroup String should be RU and no value necessary.  This is a good reference: https://support.f5.com/csp/article/K43383890. 

[jlb4350]

Interesting. So I should just put RU in the string field and nothing in the value field, and that will be my string record, like this:


How about the iRule, does that part look alright?

Thank you for your reply and help!

[David_Larsen · Accepted solution]

The iRule is slightly wrong in that it is trying to pull out a value of RU and then matching the IP address to the value which would never happen.  I would use the framework set in the support article and do something like this:

when SERVER_CONNECTED {
    set ipaddr [IP::remote_addr]
    set fromCountry [whereis $ipaddr country]
    if { [class match $fromCountry equals GeoIPOutboundBlockRussia] } {
         log local0. "Attacker IP [IP::client_addr]"  ;#  This can be removed/commented out if not required
         drop
    }
}

[jlb4350]

Perfect, I'll give that a try and see what happens tonight. I'll report back, thank you again for your help!

[kbk491]

did it work? just curious

[jlb4350]

Sorry for the late reply, I've been traveling.

I ended up piecing together a few iRules that I found to come up with this and it works perfectly. I may tweak it in the future, but this is working. It involves the countries to block access to in a data group and the iRule to reference that group: