Route ip traffic from mobile client to site to site vpn

[xdtarrexd]

Hello.

I'm not an expert in the networking area, but ill try my best to explain what I'm trying to achieve.

First of, let me explain my situation:

SITE A: 11.11.11.11 (Subnet 1.1.1.1)  Cisco ASA
SITE B: 22.22.22.22 (Subnet 2.2.2.2) Pfsense 2.3+

1. Site A and SITE B can reach each other via SITE to SITE IPSEC
2. Site B has IPSEC Mobile Clients enabled which allows users to access 2.2.2.2.

What i'm wondering if possible, is: When users connect to SITE B via Moblie VPN I also want them to be able to access SITE A's subnet.

I don't know what this is called or what to search for, so i was hoping for some guidelines regarding this issue.

PS:

Were eventually going to move from our 14+ year old ASA, but in the meantime, id like to get this setup to work.

Thanks in advance.