You can easily jump to specific packets with one of the menu items in the menu.
Go back in the packet history, works much like the page history in most web browsers.
Go forward in the packet history, works much like the page history in most web browsers.
This toolbar can be opened by selecting → from the main menu. It appears between the main toolbar and the packet list, similar to the ”Find Packet” toolbar.
When you enter a packet number and press Wireshark will jump to that packet.
If a protocol field is selected which points to another packet in the capture file, this command will jump to that packet.
As these protocol fields now work like links (just as in your Web browser), it’s easier to simply double-click on the field to jump to the corresponding field.