I used to think halal was close to kosher standards but not exactly the same and then a muslim friend of mine is like "Oh no there's a lot of meat that's halal and not kosher but kosher food is generally considered halal as long as it doesn't violate specific dietary rules."

It came up because I thought shrimp was haram but it isn't... :0

However, of course halal and kosher dietary rules do share the no pork rule.