I use dyndns's (free) service to access a remote machine with a dynamic IP address. The machine is running under CentOS-6.0. I can ssh into the address given me by dyndns (*.homelinux.com), but when I do this I get the warning "reverse mapping checking getaddrinfo for" * "failed - POSSIBLE BREAK-IN ATTEMPT!" This doesn't really matter, as I normally use OpenVPN for accessing this site - the dyndns method is a safety precaution in case openvpn doesn't work. But I'm wondering if it is possible to stop the warning? I've tried various recipes google gave me, eg adding "UseDNS no" to /etc/ssh/sshd_config on the remote machine (and re-starting sshd), but none of them has worked, -- Timothy Murphy e-mail: gayleard /at/ eircom.net tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland
On Sun, Sep 25, 2011 at 2:13 PM, Timothy Murphy <gayleard at eircom.net> wrote:> I use dyndns's (free) service to access a remote machine > with a dynamic IP address. > The machine is running under CentOS-6.0. > > I can ssh into the address given me by dyndns (*.homelinux.com), > but when I do this I get the warning > "reverse mapping checking getaddrinfo for" * > ?"failed - POSSIBLE BREAK-IN ATTEMPT!" > > This doesn't really matter, > as I normally use OpenVPN for accessing this site - > the dyndns method is a safety precaution in case openvpn doesn't work. > > But I'm wondering if it is possible to stop the warning? > I've tried various recipes google gave me, > eg adding "UseDNS no" to /etc/ssh/sshd_config on the remote machine > (and re-starting sshd), > but none of them has worked, > > > --Add the DynDNS hostnane to the localmachine, i.e: 192.168.0.10 mybox.homelinux.net and see if that helps? -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532