Koozali.org: home of the SME Server

Firewall status in Server-Only mode

Offline madadam

  • *
  • 149
  • +0/-0
    • http://www.extremetourist.com
Firewall status in Server-Only mode
« on: July 23, 2012, 04:17:57 PM »

Having built several SME 8 machines in Server-Only mode I've observed that the masq service is running and a dump of iptables -l shows a few pages of active rules. This seems to suggest that SME 8s default is to have an active firewall in Server-Only mode despite documentation indicating otherwise:

http://wiki.contribs.org/SME_Server:Documentation:Administration_Manual:Chapter5#Option_3:_Server-only_mode

http://wiki.contribs.org/SME_Server:Documentation:Administration_Manual:Chapter2

Can a dev team member please confirm or deny my observation on the status of the firewall in Server-Only mode. I recall a discussion under SME 7 that addressed this question and I believe that originally it was not the case but modifications were made to allow this behaviour.

Cheers,

Adam
...

Offline janet

  • ****
  • 4,812
  • +0/-0
Re: Firewall status in Server-Only mode
« Reply #1 on: July 24, 2012, 01:04:04 AM »
madadam

IIRC in server only mode there is still some minor degree of "firewall" functionality, but it is only minimal, as deemed appropriate by the developers for additional security in that mode. There were some big long forum discussions involving arne from about 2 or more years ago that touched on this subject (amongst other posts).

You MUST still put a full blown firewall between an sme server in server only mode and the Internet. This could be a sme server in server and gateway mode or some other firewall device.
Please search before asking, an answer may already exist.
The Search & other links to useful information are at top of Forum.

Offline madadam

  • *
  • 149
  • +0/-0
    • http://www.extremetourist.com
Re: Firewall status in Server-Only mode
« Reply #2 on: July 24, 2012, 12:49:01 PM »
Hi Mary,

I do remember the discussion but can't seem to find it. I don't suppose you can provide a link to it if it's the same thread I'm thinking of.

Cheers,

Adam
...

Offline madadam

  • *
  • 149
  • +0/-0
    • http://www.extremetourist.com
Re: Firewall status in Server-Only mode
« Reply #3 on: July 26, 2012, 05:59:42 AM »
Could one of the dev team members please take a moment to iterate the firewall/security functionality of SME Server 8 in Server-Only mode please?
...