Added FLUSH_IPFW_AT_INIT and FLUSH_IPFW_AT_EXIT for ipfw firewalls to emulate
the corresponding functionality that is implemented for iptables firewalls.
Bug fix for ipfw firewalls to ensure that if the ipfw expire set is zero, then
do not disable this set whenever the FLUSH_IPFW* variables are enabled.
These changes were suggested by Jonathan Schulz.
This commit adds a new configuration variable "FORCE_NAT" to the access.conf
file:
For any valid SPA packet, force the requested connection to be NAT'd
through to the specified (usually internal) IP and port value. This is
useful if there are multiple internal systems running a service such as
SSHD, and you want to give transparent access to only one internal system
for each stanza in the access.conf file. This way, multiple external
users can each directly access only one internal system per SPA key.
This commit also implements a few minor code cleanups.
The two memory leaks were found with the test suite running in
--enable-valgrind mode - here are the relevant error messages:
For fwknopd server GPG clean up:
==345== 9 bytes in 1 blocks are definitely lost in loss record 2 of 2
==345== at 0x4C2815C: malloc (vg_replace_malloc.c:236)
==345== by 0x52F6B81: strdup (strdup.c:43)
==345== by 0x10FA57: add_string_list_ent (access.c:308)
==345== by 0x110513: parse_access_file (access.c:387)
==345== by 0x10B5FB: main (fwknopd.c:193)
For fwknop client rc file processing:
==8045== 568 bytes in 1 blocks are still reachable in loss record 12 of 12
==8045== at 0x4C2815C: malloc (vg_replace_malloc.c:236)
==8045== by 0x50A53AA: __fopen_internal (iofopen.c:76)
==8045== by 0x10C3FF: process_rc (config_init.c:446)
==8045== by 0x10C8F6: config_init (config_init.c:671)
==8045== by 0x10AC9E: main (fwknop.c:62)
There is also a new clean_exit() function that makes it easier to ensure that
resources are deallocated upon existing.
This commit makes it easier to determine exactly which commands fwknopd
runs in --verbose mode when interacting with the underlying firewall.
This commit also adds --verbose --verbose mode to the test suite.
Added the 'const' qualifier to function prototype variables where possible.
In addition, reduced some functions to file-scope with 'static' where possible.
Also made a few minor changes to remove extra whitespace, and fixed a bug
in create_fwknoprc() to ensure the new fwknoprc filehandle is closed.
Added new command line options --fw-list-all and --fw-flush to allow all
firewall rules to be displayed including those not created by fwknopd, and
allow all firewall rules created by fwknopd to be deleted.
Also switched -D config dump output to stdout.
In the fw_config struct the active_rules member is unsigned, so this change
ensures that we don't try to decrement it below zero whenever a firewall rule
is deleted or an error condition occurs.
Replaced all instances of "_exp_" with the #define EXPIRE_COMMENT_PREFIX so
that the prefix can easily be changed. so
that the prefix can easily be changed. so
that the prefix can easily be changed. so
that the prefix can easily be changed.
This commit implements the ability to add PF firewall rules to the fwknop
anchor after a valid SPA packet is sniffed off the wire. A subsequent commit
will add the ability to delete these rules.
This commit fixes an issue on ipfw firewalls where fwknopd would always require
seeing ipfw 'Dynamic' rules associated with newly added connections. But, such
connections may never be established for various reasons. Previous to this
commit the following warning was frequently generated by fwknopd:
Unexpected error: did not find 'Dynamic rules' string in list output.
This commit fixes an issues on systems running the ipfw firewall where the
'set' where fwknopd puts new access rules was attempted to be deleted without
first checking to see whether it exists. The following errors would be
generated (now fixed):
ipfw: rule 16777217: setsockopt(IP_FW_DEL): Invalid argument
Error 17664 from cmd:'/sbin/ipfw delete set 1':
Fatal: Errors detected during ipfw rules initialization.
This commit fixes several compiler warnings like the following (now that -Wall
is the default):
config_init.h:68: warning: ‘cmd_opts’ defined but not used
