Tom where go the files "saved" with shorewall save command? If the restart command is not working the previos saved files go up again and lost the configuration in /etc/shorewall?
Best regards Emiliano Emiliano Vazquez | PcCentro S.R.L. Callao 80 | CP 1022 | C.A.B.A. Office: +54 (11) 4951-0203 / 4155 Celular: 15.6253.7165 Mail: emilianovazq...@gmail.com Web: http://www.pccentro.com.ar -----Original Message----- From: Tom Eastep <teas...@shorewall.net> Date: Thu, 24 May 2012 07:08:21 To: <shorewall-users@lists.sourceforge.net> Reply-To: Shorewall Users <shorewall-users@lists.sourceforge.net> Subject: Re: [Shorewall-users] Absent-minded admin + multi isp On 05/24/2012 02:24 AM, Artur Uszyński wrote: > Hello. > > In a situation like this: > - a firewall has two or more internet connections, > - a firewall runs shorewall 4.5.1 (multiple isps configured) > - one connection is broken, > - default route in the main routing table leads through the failed connection, > - a firewall is 20000 km away from admin ;), > > and after taking the following actions: > - logging in to the firewall through working connection, > - changing shorewall configuration and making a stupid error in it > - doing "shorewall stop; shorewall start" :s, > > you must take nearest flight from Europe to Australia to bring the firewall > back to life ;) (because returning traffic goes through default, non-working > link) > > Can shorewall handle such cases in a way, which would prevent similar > accidents ? Did I miss any option ? A couple of things: a) Before making a configuration change, execute 'shorewall save'. This will save the currently running configuration which can then be restored if a 'restart' fails. b) Use 'shorewall restart' rather than 'shorewall stop; shorewall start'. 'shorewall stop' restores the default route(s) that were in place before the last 'start' command. 'shorewall restart' replaces, adds or deletes default routes based on the state of the links. And if the 'restart' fails, the firewall will be restored to its prior state. c) After you are satisfied that the change works correctly, do another 'shorewall save'. Note: As someone noted in another response to your post, the 'safe-restart' command combines 'save' and 'restart' in a single command. -Tom -- Tom Eastep \ When I die, I want to go like my Grandfather who Shoreline, \ died peacefully in his sleep. Not screaming like Washington, USA \ all of the passengers in his car http://shorewall.net \________________________________________________ ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Shorewall-users mailing list Shorewall-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/shorewall-users ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Shorewall-users mailing list Shorewall-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/shorewall-users
