In fact for the two files, the back parametersand the ident parameters must be exchanged.
But I am afraid it is not sufficient. I will look a glance and put on the wimsmodules svn the modifications I try (I don't want to commit them on the wimsdev svn).
ident_site=127.0.0.1
ident_desc=yourself
ident_agent=WIMS-webget
ident_protocol=http
ident_password=tata
ident_type=wims
# The address and identifier/password pair for calling back.
back_url=http:/192.xxxx/wims/wims.cgi
back_ident=myself
back_password=toto
ident_type=wims
# The address and identifier/password pair for calling back.
back_url=http://127.0.0.1/wims/wims.cgi
back_ident=yourself
back_password=tata