Hi,
In addition to what Pulkit sugegsted, you can also apply a firewall filter after creating a loopback interface on the SRX.
In the filte, you can allow only specific IP addresses from where you want to access :-
https://kb.juniper.net/InfoCenter/index?page=content&id=KB21265&actp=search
Please let me know if there are any further queries or conerns on this.
Regards,
Sahil Sharma
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Please mark my solution as accepted if it helped, Kudos are appreciated as well.