If you still need to manage an old RouterOS v6.42 with Winbox 3.18, isolate the management PC and router on a dedicated VLAN with no internet access.
If you still need to manage an old RouterOS v6.42 with Winbox 3.18, isolate the management PC and router on a dedicated VLAN with no internet access.
If you still need to manage an old RouterOS v6.42 with Winbox 3.18, isolate the management PC and router on a dedicated VLAN with no internet access.