forked from extern/shorewall_code
4016d69b8d
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@7729 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
167 lines
5.8 KiB
Plaintext
167 lines
5.8 KiB
Plaintext
Shorewall 4.1 Patch Release 2.
|
|
|
|
----------------------------------------------------------------------------
|
|
R E L E A S E 4 . 1 H I G H L I G H T S
|
|
----------------------------------------------------------------------------
|
|
1) Support is included for multiple internet providers through the same
|
|
ethernet interface.
|
|
|
|
2) Support for NFLOG has been added.
|
|
|
|
3) Enhanced operational logging
|
|
|
|
Problems corrected in Shorewall 4.1.2.
|
|
|
|
None.
|
|
|
|
Other changes in Shorewall 4.1.2.
|
|
|
|
1) Shorewall 4.1.2 contains enhanced operational logging capabilities
|
|
through a set of related enhancements to Shorewall-common and
|
|
Shorewall-shell. The enhancements are not supported by
|
|
Shorewall-shell.
|
|
|
|
a) The STARTUP_LOG option in /etc/shorewall/shorewall.conf gives
|
|
the name of the Shorewall operational log. The log will be
|
|
created if it does not exist.
|
|
|
|
b) The LOG_VERBOSITY option in /etc/shorewall/shorewall.conf gives
|
|
the verbosity at which logging will occur. It uses the same
|
|
value range as VERBOSITY:
|
|
|
|
-1 Do not log
|
|
0 Almost quiet
|
|
1 Only major steps
|
|
2 Verbose
|
|
|
|
c) An absolute VERBOSITY may be specified on the command line
|
|
using the -v option followed by -1,0,1 or 2.
|
|
|
|
Example:
|
|
|
|
shorewall -v2 check
|
|
|
|
d) The /etc/init.d/shorewall script supplied with the
|
|
shorewall.net packages sets '-v0' as the default. This may be
|
|
overridden with the OPTIONS setting in /etc/defaults/shorewall or
|
|
/etc/sysconfig/shorewall.
|
|
|
|
Logging occurs on both Shorewall-perl and the generated script when
|
|
the following commands are issued:
|
|
|
|
start
|
|
restart
|
|
refresh
|
|
|
|
Messages in the log are always timestamped.
|
|
|
|
New Features in Shorewall 4.1.
|
|
|
|
1) Shorewall 4.1 contains experimental support for multiple Internet
|
|
providers through a single ethernet interface. Configuring two
|
|
providers through a single interface differs from two providers
|
|
through two interfaces in several ways.
|
|
|
|
a) Only ethernet (or ethernet-like) interfaces can be used. For
|
|
inbound traffic, the MAC addresses of the gateway routers is used
|
|
to determine which provider a packet was received through. Note
|
|
that only routed traffic can be categorized using this technique.
|
|
|
|
b) You must specify the address on the interface that corresponds to
|
|
a particular provider in the INTERFACE column by following the
|
|
interface name with a colon (":") and the address.
|
|
|
|
c) Entries in /etc/shorewall/masq must be qualified by the provider
|
|
name (or number).
|
|
|
|
d) This feature requires Realm Match support in your kernel and
|
|
iptables. If you use a capabilities file, you need to regenerate
|
|
the file with Shorewall 4.0.6 or Shorewall-lite 4.0.6.
|
|
|
|
e) You must add route_rules entries for networks that are accessed
|
|
through a particular provider.
|
|
|
|
f) If you have additional IP addresses through either provider,
|
|
you must add route_rules to direct traffic FROM each of those
|
|
addresses through the appropriate provider.
|
|
|
|
Example:
|
|
|
|
Providers Blarg (1) and Avvanta (2) are both connected to
|
|
eth0. The firewall's IP address with Blarg is 206.124.146.176/24
|
|
(gateway 206.124.146.254) and the IP address from Avvanta is
|
|
130.252.144.8/24 (gateway 130.252.144.254). We have a second IP
|
|
address (206.124.146.177) from Blarg.
|
|
|
|
/etc/shorewall/providers:
|
|
|
|
#PROVIDER NUMBER MARK DUPLICATE INTERFACE GATEWAY
|
|
Blarg 1 1 main eth0:206.124.146.176 206.124.146.254 ...
|
|
Avvanta 2 2 main eth0:130.252.144.8 130.252.144.254 ...
|
|
|
|
/etc/shorewall/masq:
|
|
|
|
#INTERFACE SOURCE ADDRESS
|
|
eth0(Blarg) 130.252.144.8 206.124.146.176
|
|
eth0(Avvanta) 206.124.146.176 130.252.144.8
|
|
eth0(Blarg) eth1 206.124.146.176
|
|
eth0(Avvanta) eth1 130.252.144.8
|
|
|
|
/etc/shorewall/route_rules:
|
|
|
|
#SOURCE DEST PROVIDER PRIORITY
|
|
- 206.124.146.0/24 Blarg 1000
|
|
- 130.252.144.0/24 Avvanta 1000
|
|
206.124.146.177 - Blarg 26000
|
|
|
|
2) You may now include the name of a table (nat, mangle or filter) in
|
|
a 'shorewall refresh' command by following the name with a colon
|
|
(e.g., mangle:). This causes all non-builtin chains in the table to
|
|
be reloaded.
|
|
|
|
Example:
|
|
|
|
shorewall refresh nat:
|
|
|
|
3) When no chain name is given to the 'shorewall refresh' command, the
|
|
mangle table is refreshed along with the blacklist chain (if
|
|
any). This allows you to modify /etc/shorewall/tcrules and install
|
|
the changes using 'shorewall refresh'.
|
|
|
|
4) Support for the NFLOG log target has been added. NFLOG is a
|
|
successor to ULOG. In addition, both ULOG and NFLOG may be followed
|
|
by a list of up to three numbers in parentheses.
|
|
|
|
The first number specifies the netlink group (1-32). If omitted
|
|
(e.g., NFLOG(,0,10)) then a value of 1 is assumed.
|
|
|
|
The second number specifies the maximum number of bytes to copy. If
|
|
omitted, 0 (no limit) is assumed.
|
|
|
|
The third number specifies the number of log messages that should
|
|
be buffered in the kernel before they are sent to user space. The
|
|
default is 1.
|
|
|
|
Examples:
|
|
|
|
/etc/shorewall/shorewall.conf:
|
|
|
|
MACLIST_LOG_LEVEL=NFLOG(1,0,1)
|
|
|
|
/etc/shorewall/rules:
|
|
|
|
ACCEPT:NFLOG(1,0,1) vpn fw tcp ssh,time,631,8080
|
|
|
|
5) Shorewall-perl 4.1.0 implements an alternative syntax for macro
|
|
parameters and for the NFQUEUE queue number. Rather than following
|
|
the macro name (or NFQUEUE) with a slash ("/") and the parameter,
|
|
the parameter may be enclosed in parentheses.
|
|
|
|
Examples -- each pair shown below are equivalent:
|
|
|
|
DNS/ACCEPT DNS(ACCEPT)
|
|
NFQUEUE/3 NFQUEUE(3)
|
|
|
|
The old syntax is still be accepted but will cease to be documented
|
|
in some future Shorewall release.
|