ipfirewall(4)) cannot be changed

[Giorgos Keramidas]

On 2003-05-25 07:57, Santos wrote:
> root at vigilante /root cuaa1# man init |tail -n 130 |head -n 5
>
> 3   Network secure mode - same as highly secure mode, plus IP packet
>      filter rules (see ipfw(8) and ipfirewall(4)) cannot be changed and
>      dummynet(4) configuration cannot be adjusted.
>
> root at vigilante /root cuaa1# sysctl -a |grep secure
> kern.securelevel: 3
> [...]
> root at vigilante /root cuaa1# sysctl net.inet.ip.fw.enable=0
> net.inet.ip.fw.enable: 1 -> 0
>
> root at vigilante /root cuaa1# ping  216.136.204.21
> PING 216.136.204.21 (216.136.204.21): 56 data bytes
> 64 bytes from 216.136.204.21: icmp_seq=0 ttl=50 time=338.878 ms
> ^C

Try this patch.  Unless of course, you're not using IPFW version 1,
in which case someone more knowledgeable will hopefully correct me :)

<<<<<<<
Index: ip_fw.c
===================================================================
RCS file: /home/ncvs/src/sys/netinet/ip_fw.c,v
retrieving revision 1.192
diff -u -r1.192 ip_fw.c
--- sys/netinet/ip_fw.c	19 Feb 2003 05:47:33 -0000	1.192
+++ sys/netinet/ip_fw.c	25 May 2003 20:46:37 -0000
@@ -95,7 +95,7 @@

 #ifdef SYSCTL_NODE
 SYSCTL_NODE(_net_inet_ip, OID_AUTO, fw, CTLFLAG_RW, 0, "Firewall");
-SYSCTL_INT(_net_inet_ip_fw, OID_AUTO, enable, CTLFLAG_RW,
+SYSCTL_INT(_net_inet_ip_fw, OID_AUTO, enable, CTLFLAG_RW|CTLFLAG_SECURE3,
     &fw_enable, 0, "Enable ipfw");
 SYSCTL_INT(_net_inet_ip_fw, OID_AUTO,one_pass,CTLFLAG_RW,
     &fw_one_pass, 0,
>>>>>>>

- Giorgos