X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/putty/blobdiff_plain/9dda64599614c85260f2559f6b9688c0e971edb9..55881b4f6d86a4e6dca73c5a110f9bcb94aa32b5:/doc/faq.but

diff --git a/doc/faq.but b/doc/faq.but
index 1aa42760..8910010c 100644
--- a/doc/faq.but
+++ b/doc/faq.but
@@ -1,4 +1,4 @@
-\versionid $Id: faq.but,v 1.25 2002/05/11 16:45:29 simon Exp $
+\versionid $Id: faq.but,v 1.32 2002/08/09 09:14:04 simon Exp $
 
 \A{faq} PuTTY FAQ
 
@@ -38,9 +38,8 @@ version 0.52.
 \cw{ssh.com} SSHv2 private key files?
 
 Version 0.52 doesn't, but in the latest development snapshots
-PuTTYgen can load OpenSSH private keys. We plan to add an export
-feature so that it can save them as well, and we also plan to
-support the \cw{ssh.com} key format.
+PuTTYgen can load and save both OpenSSH and \cw{ssh.com} private key
+files.
 
 \S{faq-ssh1}{Question} Does PuTTY support SSH v1?
 
@@ -739,6 +738,21 @@ For more details and OpenSSH patches, see
 \W{http://bugzilla.mindrot.org/show_bug.cgi?id=138}{bug 138} in the
 OpenSSH BTS.
 
+\e{Update:} As of OpenSSH 3.4p1 the problem with SSH 1 and Blowfish
+remains. Apply the patch linked to from bug 138, or use another cipher
+(e.g., 3DES) instead.
+
+\S{faq-ssh2key-ssh1conn}{Question} Why do I see "Couldn't load private
+key from ..."? Why can PuTTYgen load my key but not PuTTY?
+
+It's likely that you've generated an SSH protocol 2 key with PuTTYgen,
+but you're trying to use it in an SSH 1 connection. SSH1 and SSH2 keys
+have different formats, and (at least in 0.52) PuTTY's reporting of a
+key in the wrong format isn't optimal.
+
+To connect using SSH 2 to a server that supports both versions, you
+need to change the configuration from the default (see \k{faq-ssh2}).
+
 \H{faq-secure} Security questions
 
 \S{faq-publicpc}{Question} Is it safe for me to download PuTTY and
@@ -781,6 +795,16 @@ all. For this reason we now believe PuTTY's DSA implementation is
 probably OK. However, if you have the choice, we still recommend you
 use RSA instead.
 
+\S{faq-virtuallock}{Question} Couldn't Pageant use
+\cw{VirtualLock()} to stop private keys being written to disk?
+
+Unfortunately not. The \cw{VirtualLock()} function in the Windows
+API doesn't do a proper job: it may prevent small pieces of a
+process's memory from being paged to disk while the process is
+running, but it doesn't stop the process's memory as a whole from
+being swapped completely out to disk when the process is long-term
+inactive. And Pageant spends most of its time inactive.
+
 \H{faq-admin} Administrative questions
 
 \S{faq-domain}{Question} Would you like me to register you a nicer
@@ -878,6 +902,15 @@ developers. If you want to be sure your donation is going towards
 something worthwhile, ask us first. If you don't like these terms,
 feel perfectly free not to donate. We don't mind.
 
+\H{faq-misc} Miscellaneous questions
+
+\S{faq-openssh}{Question} Is PuTTY a port of OpenSSH, or based on
+OpenSSH?
+
+No, it isn't. PuTTY is almost completely composed of code written
+from scratch for PuTTY. The only code we share with OpenSSH is the
+detector for SSH1 CRC compensation attacks, written by CORE SDI S.A.
+
 \S{faq-sillyputty}{Question} Where can I buy silly putty?
 
 You're looking at the wrong web site; the only PuTTY we know about