X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/putty/blobdiff_plain/f9908cf7ef04deace24c6d8626e5b907c8f5704d..1549e076bc8f485888261a3b97ce35e442b5fda9:/doc/faq.but diff --git a/doc/faq.but b/doc/faq.but index 2916a92e..2592e50c 100644 --- a/doc/faq.but +++ b/doc/faq.but @@ -1,4 +1,4 @@ -\versionid $Id: faq.but,v 1.31 2002/08/09 09:11:09 simon Exp $ +\versionid $Id: faq.but,v 1.35 2002/09/14 10:24:27 jacob Exp $ \A{faq} PuTTY FAQ @@ -193,7 +193,7 @@ We do not have ports for any other systems at the present time. If anyone told you we had a Unix port, or an iPaq port, or any other port of PuTTY, they were mistaken. We don't. -\S{faq-wince}{Question} Will there be a port to Windows CE? +\S{faq-wince}{Question} Will there be a port to Windows CE or PocketPC? Probably not in the particularly near future. Despite sharing large parts of the Windows API, in practice WinCE doesn't appear to be @@ -712,17 +712,22 @@ You should still read the page} on the PuTTY website (also provided as \k{feedback} in the manual), and follow the guidelines contained in that. -\S{faq-broken-openssh31}{Question} Since my SSH server was upgraded to -OpenSSH 3.1p1, I can no longer connect with PuTTY. +\S{faq-openssh-bad-openssl}{Question} Since my SSH server was upgraded +to OpenSSH 3.1p1/3.4p1, I can no longer connect with PuTTY. There is a known problem when OpenSSH has been built against an incorrect version of OpenSSL; the quick workaround is to configure PuTTY to use SSH protocol 2 and the Blowfish cipher. +For more details and OpenSSH patches, see +\W{http://bugzilla.mindrot.org/show_bug.cgi?id=138}{bug 138} in the +OpenSSH BTS. + This is not a PuTTY-specific problem; if you try to connect with -another client you'll likely have similar problems. +another client you'll likely have similar problems. (Although PuTTY's +default cipher differs from many other clients.) -Configurations known to be broken (and symptoms): +\e{OpenSSH 3.1p1:} configurations known to be broken (and symptoms): \b SSH 2 with AES cipher (PuTTY says "Assertion failed! Expression: (len & 15) == 0" in sshaes.c, or "Out of memory", or crashes) @@ -734,13 +739,13 @@ packet") \b SSH 1 with 3DES -For more details and OpenSSH patches, see -\W{http://bugzilla.mindrot.org/show_bug.cgi?id=138}{bug 138} in the -OpenSSH BTS. +\e{OpenSSH 3.4p1:} as of 3.4p1, only the problem with SSH 1 and +Blowfish remains. Rebuild your server, apply the patch linked to from +bug 138 above, or use another cipher (e.g., 3DES) instead. -\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. +\e{Other versions:} we occasionally get reports of the same symptom +and workarounds with older versions of OpenSSH, although it's not +clear the underlying cause is the same. \S{faq-ssh2key-ssh1conn}{Question} Why do I see "Couldn't load private key from ..."? Why can PuTTYgen load my key but not PuTTY? @@ -795,15 +800,15 @@ 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 \c{VirtualLock()} -to stop private keys being written to disk? +\S{faq-virtuallock}{Question} Couldn't Pageant use +\cw{VirtualLock()} to stop private keys being written to disk? -Unfortunately not. The \c{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. +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