As well as tracking redirected URLs, Redirection will track any 404s that occur on your site. These can be found in the 404 log by clicking the 404s item in the top menu.
You will be presented with a table of 404 entries:
The logs will contain the following information about a visitor:
- Time of visit
- URL visited
- Visitor’s browser agent
- Referrer (not always available)
- IP address
Some information is only visible by hovering over the row.
Log entries can be deleted by clicking the delete link, by using the checkboxes and the Bulk Action dropdown, or by clicking the Delete All button at the bottom of the page.
Geo IP information
If you wish to see more information about the visitor you can click on the IP address, or click on ‘Geo Info’ that appears when you hover over the URL. This will show additional information about where the IP address is located:
Note that full information may not be available for all IP addresses.
User Agent information
If you wish to see more information about the visitor’s user agent – the browser or client used to make the request – then click on ‘Agent Info’ that appears when you hover over the URL. The user agent can often be used to determine if the visitor is human, or a bot or other automated tool.
Note that full information may not be available for all user agents.
Grouping by URL or IP
Viewing your logs by aggregate can be useful when deciding where to focus your attention. You can achieve this by grouping the logs by URL or IP:
You will then see a list of 404s grouped by the appropriate value, along with a total of the number of entries for each.
Using this you can determine what the biggest source of 404 errors is on your site, along with the IP address of the client making the most requests.
Under each entry are special actions to redirect, ignore, or block, that will be performed on the entire group.
Under the log entry you will find the following actions:
- Export – export the logs to CSV
- Delete All – delete all log entries matching the current table parameters
- Redirect All – redirect all the selected entries
- Ignore URL – ignore all the selected URLs (only available when grouped by URL)
- Block All – block all the selected IP (only available when grouped by IP)
Using the 404 log to Improve your Site
Sometimes a 404 occurs because you’ve incorrectly linked something, or you changed a URL, or updated your permalinks. In these instances you will find a lot of correctable 404s. That is, 404s that you need to correct by creating a redirection.
While you can copy and paste the URL into the redirect page, there’s an easier way of doing this by clicking the Add Redirect option found by hovering over a row:
Clicking this will show a simple redirect form where you can enter the target URL.
Selecting the delete all logs for this 404 will also remove any 404 log entries that match the source URL.
Bots & Baddies
You may find that your 404 log is full of unknown and mysterious URLs. It is very likely these are caused by bots – automated programs – that are probing your site to find vulnerabilities.
This may sounds alarming but it’s ‘normal’ behaviour for websites and there’s little you can do about it. It’s important to update the software on your site so that they never find a vulnerable piece of software.
If you have the ability to block IP addresses then you can use the IP information to block addresses that are causing a lot of 404 errors.
Otherwise, don’t worry about them – there’s nothing you have done wrong.
If you have a lot of logs you may find it useful to use the search facility to find a particular entry.
Customising the display
You can change what information is displayed by using the display dropdown. Pick from the pre-defined list, or use a custom display.