Be a part of the Gallic Royal Navy or some other servant of the Crown. (Royal Police, IDF Shipping, Gallic Metal Service, or whatever the oil company is called- EFL?)
Or be Council/Maquis/Brigand/Corse and just fight your way through, they have bases in the other systems.
But if you're from Sirius, the idea is that the GRN are going to welcome you with plasma and antimatter. Fixing your rep otherwise (or taking advantage of certain annoying replinks) is flat out ooRP.
That would be "unlawful" way to gallia. If you want to be Lawful in Gallia, search the Maquis depot in this Gallic system you can reach from Alpha->another omicron and shoot them all up. Or ask GRN|
In a brilliant tactical movement, i charged backwards.
If you are sirrian and a smuggler then the council needs you. There are jumpholes connecting all of the gallic border worlds. If you are a sirrian your reputation with the royals should be hostile. They are hostile towards Sirrians. The only way to get around this is to bribe the police. Still, if the navy catch you, they will kick you out or blow you up. Also, dont dock on navy bases...
And if you are corporate and from Sirrius, you should be in royal space at all, probably shouldn't even be in gallic space.