This was a real cable, and, yes, in a matter of speaking, cutting it would create a firewall.
@sjvn darn where can you buy this firewall cable? 😂
@aho it was back in the... 80s? 90s? Ir was a EU company.
@sjvn the red kind of covers up, but looks like it could be www.bit.nl, they don't seem to have cables for sale anymore, they do seem to offer server hosting.
@aho Yes! That was the manufacturer!