TLS settings – PortSwigger


The TLS settings allow you to configure:

TLS negotiation

These settings management the TLS protocols and ciphers that Burp makes use of when negotiating with upstream servers.

To allow upstream TLS verification, click on Confirm upstream TLS and choose the protocols and ciphers that you really want Burp to make use of. You’ll be able to:

  • Use the entire protocols and ciphers that your Java set up helps.
  • Use the default protocols and ciphers in your Java set up.
  • Use customized protocols and ciphers. Choose this selection after which choose the required protocols and ciphers.

Additional choices can be found:

  • Permit unsafe renegotiation – This feature could also be essential when utilizing some consumer TLS certificates or making an attempt to work round different TLS issues.
  • Disable TLS session resume – This feature controls whether or not Burp caches and reuses TLS connections between requests. Resuming periods lets you work extra effectively, however may cause issues in some conditions.

The TLS negotiation settings are undertaking settings. They apply to the present undertaking solely.

Shopper TLS certificates

These settings allow you to configure the consumer TLS certificates that Burp makes use of when requested to by a vacation spot host. You’ll be able to configure a number of certificates, and specify which hosts every certificates is used for.

When a number requests a consumer TLS certificates, Burp makes use of the primary certificates within the record for that host.

So as to add a consumer TLS certificates, click on Add to show the Shopper TLS Certificates dialog after which enter a vacation spot host and certificates kind.

Vacation spot host

That is the identify of the related hosts. You should utilize wildcards:

  • * matches zero or extra characters.
  • ? matches any character besides a dot.

To make use of a single certificates for all hosts, use * because the vacation spot host.

Certificates kind

Burp helps the next certificates varieties:

  • File (PKCS#12) – Certificates on this format should have a .p12 file extension. Choose the situation of the certificates file and the password for the certificates.
  • {Hardware} token or smartcard (PKCS#11) – Choose the situation of the PKCS#11 library file in your machine from the menu. On Home windows, Burp can robotically search widespread places to seek out the library recordsdata that you’ve put in. Additionally, you will must enter your PIN code and choose the certificates from the out there choices.

You may as well edit or reorder the record of guidelines if required.

The Shopper TLS certificates settings can apply at each person and undertaking stage. If you choose Override choices for this undertaking solely then the chosen settings solely apply to the present undertaking.

Server TLS certificates

This information-only panel incorporates particulars of all X509 certificates acquired from internet servers. Double-click an merchandise within the record to show the certificates particulars.

The Server TLS certificates settings are undertaking settings. They apply to the present undertaking solely.

Java TLS choices

These settings allow TLS options that is perhaps essential to hook up with sure servers. The next choices can be found:

  • Allow algorithms blocked by Java safety coverage – As of Java 7, the Java safety coverage can be utilized to dam sure out of date algorithms from being utilized in TLS negotiation. A few of these algorithms (MD2, for instance) are blocked by default. Nevertheless, many reside internet servers have TLS certificates that use these out of date algorithms. It isn’t doable to hook up with these servers utilizing the default Java safety coverage. Allow this setting to permit Burp to make use of the out of date algorithms when it connects to those servers. Restart Burp for any adjustments to this setting to take impact.
  • Disable Java SNI extension – As of Java 7, the TLS Server Identify Indication (SNI) extension is applied and enabled by default. Some misconfigured internet servers which have SNI enabled ship an “Unrecognized identify” warning within the TLS handshake. Whereas browsers ignore this warning, the Java implementation doesn’t, leading to a failed connection. Use this selection to disable the Java SNI extension and hook up with the servers. Restart Burp for any adjustments to this setting to take impact.

The Java TLS settings are undertaking settings. They apply to the present undertaking solely.

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