PuTTY wish banner-escape-codes

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summary: Interpret escape codes in pre-login banner
class: wish: This is a request for an enhancement.
difficulty: fun: Just needs tuits, and not many of them.
priority: never: We don't ever intend to fix this.

People occasionally ask for PuTTY to interpret escape codes in the banner some SSH servers send prior to authentication.

The SSH-2 authentication specification, RFC 4252, states, in the section about SSH_MSG_USERAUTH_BANNER:

If the 'message' string is displayed, control character filtering, discussed in [SSH-ARCH], SHOULD be used to avoid attacks by sending terminal control characters.

This is what PuTTY does, and as such, terminal-control sequences won't work.

Audit trail for this wish.

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(last revision of this bug record was at 2007-01-03 23:21:35 +0000)