ssh problems
in [Debian]
|
From: Kapil Hari Paranjape on 16 Mar 2007 13:40 Hello, On Fri, 16 Mar 2007, Francesco Pietra wrote: > It worked beautifully for a week. At a new boot today > the 32bit machine had taken the former IP address of > the 64bit machine, and viceversa. > A system maintainer suggested to change the eth# > connections of the two machines (Desktopp, > Administration, Networking) from DHCP to Static, This sounds like a correct suggestion. If you assign addresses to machines dynamically then it is difficult to treat them as "servers" except through some dynamic DNS services. > Well, I could delete all shh configuration and keys > and do that again, though for how long? You need not generate the keys again. You only need to reassign the keys in your "known_hosts" file appropriately. Hope this helps. Regards, Kapil. P.S. I removed debian-science from the cc as I couldn't see what it had to do with debian-science. -- -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org
From: Francesco Pietra on 16 Mar 2007 13:50 The "Static" assignment was on the hypothesis that the two IP addresses that the two machines were used to take were internal to the modem. Actually, changing from DHCP to Static has broken any connection to internet, i.e., if I understand, that "Static" is to the eth# connection, while my provider assigns me a dynamic address. The server should only serve between the two machines at the router. Perhaps, if I understand your suggestion, the solution, any time the IP address changes, is to "You only need to reassign the keys in your "known_hosts" file appropriately." I do not intend the Apache2 for external use. Thanks francesco --- Kapil Hari Paranjape <kapil(a)imsc.res.in> wrote: > Hello, > > On Fri, 16 Mar 2007, Francesco Pietra wrote: > > It worked beautifully for a week. At a new boot > today > > the 32bit machine had taken the former IP address > of > > the 64bit machine, and viceversa. > > > A system maintainer suggested to change the eth# > > connections of the two machines (Desktopp, > > Administration, Networking) from DHCP to Static, > > This sounds like a correct suggestion. If you assign > addresses to > machines dynamically then it is difficult to treat > them as "servers" > except through some dynamic DNS services. > > > Well, I could delete all shh configuration and > keys > > and do that again, though for how long? > > You need not generate the keys again. You only need > to reassign the > keys in your "known_hosts" file appropriately. > > Hope this helps. > > Regards, > > Kapil. > P.S. I removed debian-science from the cc as I > couldn't see what it > had to do with debian-science. > -- > ____________________________________________________________________________________ 8:00? 8:25? 8:40? Find a flick in no time with the Yahoo! Search movie showtime shortcut. http://tools.search.yahoo.com/shortcuts/#news -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org
From: Kapil Hari Paranjape on 16 Mar 2007 14:40 Hello, I read your mail more carefully this time! On Fri, 16 Mar 2007, Francesco Pietra wrote: > It worked beautifully for a week. At a new boot today > the 32bit machine had taken the former IP address of > the 64bit machine, and viceversa. On Sat, 10 Mar 2007, Francesco Pietra wrote: > Surprisingly, after an initial period where the i386 took any one > of the two internal IP addresses (indipendently which machine was > started first), now the two machines behave as if they had a static > address (it is dhcp). I have not investigated the Zyxel router, it > is as if it had a memory or a register, or he likes me. It seems to me that the DHCP address is assigned by the Zyxel Router. In that case, you can go to the Web interface of that router and configure the DHCP address to be assigned based on the MAC address of the machine that connects. That way the assignment becomes effectively static. I hope this helps since I still do not fully grasp what your network "topology" is. Regards, Kapil. -- -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org
From: Francesco Pietra on 16 Mar 2007 18:50 Kapil: I feel you are suggesting me the right way. Because it is fast, I have reconstructed the keys and reestablished the ssh connection between the two machines. Then I entered the config of the the Zyxel Prestige 660H (cable connection ADSL) via http, giving the password that I used at the first connection. DHCP shows a table with 3 columns and two rows Host Name / IP Address / MAC Address with data for the two machines (IP address corresponds to "inet addr" as from "ifconfig", MAC Addess has the hexadecimals correctly, while Hostame is empty. I tried to put in the "hostame" of the two machines, though it was as write forbidden. I operated from Gnome/Iceweasel as user. Is that a problem of permission or should I look elsewhere in the router config? Thanks francesco --- Kapil Hari Paranjape <kapil(a)imsc.res.in> wrote: > Hello, > > I read your mail more carefully this time! > > On Fri, 16 Mar 2007, Francesco Pietra wrote: > > It worked beautifully for a week. At a new boot > today > > the 32bit machine had taken the former IP address > of > > the 64bit machine, and viceversa. > > On Sat, 10 Mar 2007, Francesco Pietra wrote: > > Surprisingly, after an initial period where the > i386 took any one > > of the two internal IP addresses (indipendently > which machine was > > started first), now the two machines behave as if > they had a static > > address (it is dhcp). I have not investigated the > Zyxel router, it > > is as if it had a memory or a register, or he > likes me. > > It seems to me that the DHCP address is assigned by > the Zyxel Router. > In that case, you can go to the Web interface of > that router and > configure the DHCP address to be assigned based on > the MAC address of > the machine that connects. That way the assignment > becomes > effectively static. > > I hope this helps since I still do not fully grasp > what your network > "topology" is. > > Regards, > > Kapil. > -- > ____________________________________________________________________________________ Looking for earth-friendly autos? Browse Top Cars by "Green Rating" at Yahoo! Autos' Green Center. http://autos.yahoo.com/green_center/ -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org
From: Kapil Hari Paranjape on 16 Mar 2007 21:40
Hello, On Fri, 16 Mar 2007, Francesco Pietra wrote: > DHCP shows a table with 3 columns and two rows > > Host Name / IP Address / MAC Address > > with data for the two machines (IP address corresponds > to "inet addr" as from "ifconfig", MAC Addess has the > hexadecimals correctly, while Hostame is empty. I > tried to put in the "hostame" of the two machines, > though it was as write forbidden. I operated from > Gnome/Iceweasel as user. Is that a problem of > permission or should I look elsewhere in the router > config? Do not try to enter the host name. Look at the other administrative pages. There should/may be a way to "fix" the IP address assigned to a given MAC address. Some explanation. When your machines first are connected to the router they only have their MAC address. The router provides them with the IP address. What we want is to make sure that the router always provides MAC1 with IP1 and MAC2 with IP2. Regards, Kapil. -- -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org |