Sadhu, Sadhu for the care!
Straight forward. There is no such as a secure home for forest-dweller found. Each so called "forest-monastery" is simply nonsens, and promoted and marked for householders, monks and lay-people as such.
To meet kammathana-monks, teacher, one must beginn the path. To live a homeless live of a wandering beggar, one must leave live.
Having had guided Bhante
Indaññāno. some times to Sri Lanka, in a forest monastery, total alone, it was because he had to totally leave home, no refuge at all, no language, nobody to speak, no same kind...
If the Ven. like to really walk into the battle, it's good to do it alone for each other. What ever place seems to be serious about Vinaya. It might be difficult in regard of visa, support for such... if holding such things. But one getting in this "secure" support and providing, it's also difficult to leace home.
How ever, much encouragement for the Ven. to leave land, home, refuge of "same"-kind and so on.
Bhante
Subhuti might know starting places, might possible help in what is possible to help, thinking he has still contact to Burma and knows Sri Lanka as well.
Bhante
Paññobhāsa might be of help for starting points in Burma.
Bhante
Martin Piyadhammo (disciple of Ajahn Bowa, from Germany) might help in regard of Thailand.
Also Bhante
Hasapanno , dwelling as Mahanikaya origin together with Dhammayut Monks, in Australia and used to walk like an rino, might be of help for starting points.
Yet all of them, as it seems, are much busy and much involved to care a lot for householders.
Please, if possible take care of alk this Visa and formal things as lay people. Don't let Monks get involved, althought usually, and there is a lot, lot of merits, to provide monks the possibility of not being caught behind borders.
Monks can not provide each other with formal things. If they do, can, organice, they are certain bond or in debt. So please do never count in this regard and talk with other lay people to manage such things.
Encourage monks to meet here at sangham.et, each other, in the monastic, not public area, beyond borders as long such is possible and given, help them to access, help them to meet each other easy, without borders and often. Turn them away from facebook and other contacts and states territories to stay homeless or become really homeless and live only in Refuge of the Gems.
Less are left, less have found firm refuge, less are "free like birds" yet not fearing to be also caught and eaten by their past ripping deeds.
(Also, be sure that monks you support have actually good and right attentions and are able to carry only 8 things and no begs and signs of householders, can live by only being provided by their alms bowl. It otherwise cause damage for future Monks seeking support by good fellows and lay people as well)