Hi Jose, This is a "feature" of your NTP settings. I'm betting that you have your NTP server set to "pool.ntp.org". As it's name suggests pool.ntp.org is a pool of servers available for anyone to use. Your NTP client makes a connection to the pool and it is forwarded on to one of the pool members.
If you require a fixed NTP server then you must specify that server in your NTP setup. In terms of security it would behove you to stick with the pool. When I worked at NASD we required the time stamping of trades to be accurate to within 3 seconds. As a security test we were able to drift our lab NTP server backwards by 3 minutes and thus pulled all the clocks synced with us out of whack. Any trades made would be voided. This is a sure fire way of sending a market south. Terrorists take note!! By using a pool of servers you almost negate the risk of deliberate drift because it would be almost impossible to mess with all of the servers. To this end you should also sync your server to as many external NTP servers as possible. Simply add multiple "server pool.ntp.org" statements to your config file. Mark On Mon, 2008-12-01 at 21:30 -0600, Jose Colin wrote: > HI. one question. each time that I reboot the astlinux box. it appears > diferent NTP Network Session on remote and refid ? anyone know why it > appears these. > is a security breach ? or why I see each time. diferent remote > address appears on my status. I reboot 5 times in less than 10 > minutes an each time I reboot it change the remote and refid > help with this would be aprecciate > > > > NTP Network Sessions: > remote refid st t when poll reach delay offset jitter > ============================================================================== > ox.eicat.ca 192.12.19.20 2 u 9 64 3 98.972 26.173 1.402 > > LOCAL(0) .LOCL. 10 l 8 64 3 0.000 0.000 0.001 > > > On Mon, Nov 10, 2008 at 12:12 PM, Darrick Hartman > <[EMAIL PROTECTED]> wrote: > Daniel, > > Not necessarily. It sounds like you have the firewall > misconfigured. > What ports are you opening? You should really only have your > ssh port > and vpn port open. All others should be closed. How are > these people > getting in? > > Darrick > > > Daniel Aeberli wrote: > > Sorry, just realised this is more an Astersik general > question than a > > ASTLinux one ... of to search other forums... > > > > Daniel Aeberli a écrit : > >> Well after the brute force attack ssh login attempts, last > month, I have > >> an undesirable outsider that successfully made calls from > my ASTlinux > >> box. I locked out the brute force, by disabling WAN > requests, turning of > >> WAN ping response and turning off ssh access, but > obviously my box is > >> not secure. > >> > >> I'm not savvy enough to know how to secure by AstLinux box > from outside > >> callers (hackers). I only use AstLinux to call my parents > AstLinux box > >> via a VPN trunk over our ADSL lines. All my local calls go > via ISDN line > >> (since I have to have it for the ADSL link and local call > are free). > >> > >> Could someone tell me how to lock outside calls (internet / > ADSL) from > >> using my ISDN lines? > >> > >> Thanks > >> > >> Daniel > >> > >> > > ------------------------------------------------------------------------- > >> This SF.Net email is sponsored by the Moblin Your Move > Developer's challenge > >> Build the coolest Linux based applications with Moblin SDK > & win great prizes > >> Grand prize is a trip for two to an Open Source event > anywhere in the world > >> http://moblin-contest.org/redirect.php?banner_id=100&url=/ > >> _______________________________________________ > >> Astlinux-users mailing list > >> Astlinux-users@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/astlinux-users > >> > >> Donations to support AstLinux are graciously accepted via > PayPal to [EMAIL PROTECTED] > >> > > > > > > > > ------------------------------------------------------------------------- > > This SF.Net email is sponsored by the Moblin Your Move > Developer's challenge > > Build the coolest Linux based applications with Moblin SDK & > win great prizes > > Grand prize is a trip for two to an Open Source event > anywhere in the world > > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > > _______________________________________________ > > Astlinux-users mailing list > > Astlinux-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/astlinux-users > > > > Donations to support AstLinux are graciously accepted via > PayPal to [EMAIL PROTECTED] > > > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move > Developer's challenge > Build the coolest Linux based applications with Moblin SDK & > win great prizes > Grand prize is a trip for two to an Open Source event anywhere > in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > Astlinux-users mailing list > Astlinux-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/astlinux-users > > Donations to support AstLinux are graciously accepted via > PayPal to [EMAIL PROTECTED] > > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ Astlinux-users mailing list > Astlinux-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/astlinux-users Donations to > support AstLinux are graciously accepted via PayPal to [EMAIL PROTECTED] -- Mark Phillips, G7LTT/NI2O Randolph, NJ ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Astlinux-users mailing list Astlinux-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/astlinux-users Donations to support AstLinux are graciously accepted via PayPal to [EMAIL PROTECTED]
