Date: Wed, 10 Feb 2021 12:38:52 +0300 From: Yuri Pankov <yuripv@yuripv.dev> To: PstreeM China <pstreem@gmail.com> Cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: Permission denied via ssh over ipv6 Message-ID: <0fc3cba3-f5f8-c610-0065-296c73227c1f@yuripv.dev> In-Reply-To: <CAPDFJPj5Hfbnym0Ry5w-d2COw2RaUBift5nem0wkvdAC%2B4qXnQ@mail.gmail.com> References: <CAPDFJPjF19_9kRG0ff5r0cmD=-GpnYjdZNaCTyJEj-Bogw0qEw@mail.gmail.com> <YCNsdWk019SBpLdg@geeks.org> <CAPDFJPjL8EdVfeH43=35cLxRGyE388JYY9qD5JB=gsdwhTh6ag@mail.gmail.com> <65d54e7c-9d2c-ec74-1c1c-b0d87bfed6c1@yuripv.dev> <CAPDFJPj5Hfbnym0Ry5w-d2COw2RaUBift5nem0wkvdAC%2B4qXnQ@mail.gmail.com>
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PstreeM China wrote: > my fault. > the system i mentioned in the original question "FreeBSD 12.2" is the ssh > server. > for this case, the system which i used as the client is also FreeBSD 12.2. > > test from other host(from different network ) as the client to ssh to the " > 2607:f130::6287", it's the same issue. > test from the localhost (the host config the ipv6 address as 2607:f130::628 > ), use the command: %ssh myuser@2607:f130::628, it's work well. > > I don't know what is the problem, how to fix. That would mean, and the log you provided confirms, that you are connecting to wrong system, "remote software version OpenSSH_7.4" is NOT FreeBSD 12.2 sshd reply. For further investigation, you could provide network configuration, i.e. `ifconfig`, `netstat -rn` output and relevant rc.conf entries from both client and server. > On Wed, Feb 10, 2021 at 4:47 PM Yuri Pankov <yuripv@yuripv.dev> wrote: > >> PstreeM China wrote: >>> hi: >>> >>> thanks for your quickly reply. >>> ssh -vvv log as below, we can see the connection has already established, >>> but after input the password, it's not work.. >>> i'am sure the password is right, try modify the passwd has the same >> issue. >>> >>> about the DNS PTRs, how should i do ? the source is my home pc, not have >>> DNS domain. >>> >>> -------------------------------- >>> rpi% ssh myuser@2607:f130::6287 -vvv >>> OpenSSH_7.9p1, OpenSSL 1.1.1h-freebsd 22 Sep 2020 >> [...] >>> debug1: Local version string SSH-2.0-OpenSSH_7.9 FreeBSD-20200214 >>> debug1: Remote protocol version 2.0, remote software version OpenSSH_7.4 >> [...] >>> Permission denied, please try again. >>> myuser@2607:f130::6287's password: >> >> From your original question it's not clear whether FreeBSD 12.2 system >> is the client or server, and given the above I'm guessing it's the >> former as remote version doesn't say "FreeBSD" and is otherwise >> outdated; correct? >> >> Also, are you able to connect to 2607:f130::6287 from any other host to >> make sure it's correct address to use and is accepting v6 connections? >> >>> On Wed, Feb 10, 2021 at 1:18 PM Doug McIntyre <merlyn@geeks.org> wrote: >>> >>>> On Wed, Feb 10, 2021 at 11:47:08AM +0800, PstreeM China wrote: >>>>> Very thanks, this problem has searched from google, but not find the >>>>> solution to fix this issue. >>>>> >>>>> new install FreeBSD in virtual machine. >>>>> Freebsd version is 12.2 >>>>> Duel stack support ipv4 and ipv6; enable sshd as default. >>>>> I can ping the ipv4 and ipv6 address. >>>>> >>>>> The problem is: >>>>> SSH over ipv4 is work well. >>>>> But ssh over ipv6, Can be connected, but after input the password, it >> is >>>>> failed , give the notify : permission denied. >>>>> can not log into the server. >>>>> I am sure the password is right. >>>> >>>> >>>> Have you run 'ssh -vvv' to see all the very verbose debug information? >>>> >>>> Do you have proper DNS PTRs setup for your IPv6 block? It could be >>>> blocked by mismatch reverse DNS.
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