If your firewall is configured to block {{{PUT}}} or {{{DELETE}}} TiddlyWeb will have a very hard time doing the job is was built to do. If you are in this situation first try asking your firewall administrator to make a change. {{{PUT}}} and {{{DELETE}}} are legitimate and common parts of HTTP, they should not be blocked, they pose no greater risk that {{{POST}}}.
If that doesn't work there are some plugins that make it so {{{PUT}}} and {{{DELETE}}} can be tunneled over {{{POST}}}. You will need:
- tiddlywebplugins.methodhack
- Code like the plugin found in @methodhack which overrides jQuery AJAX calls.
Note that this code has not been extensively tested as the number of crummy firewalls with bad rules is thankfully decreasing.