# ./scandisk
dosfsck 2.9 (15 May 2003)
dosfsck 2.9, 15 May 2003, FAT32, LFN
Checking we can access the last sector of the filesystem
Boot sector contents:
System ID "SYSLINUX"
Media byte 0xf8 (hard disk)
       512 bytes per logical sector
      2048 bytes per cluster
         1 reserved sector
First FAT starts at byte 512 (sector 1)
         2 FATs, 16 bit entries
     82432 bytes per FAT (= 161 sectors)
Root directory starts at byte 165376 (sector 323)
       512 root directory entries
Data area starts at byte 181760 (sector 355)
     41085 data clusters (84142080 bytes)
39 sectors/track, 8 heads
        39 hidden sectors
    164697 sectors total
Reclaiming unconnected clusters.
/dev/hda1: 649 files, 26551/41085 clusters

if [ "$ENADNS" = s ]; then              # Włączony lokalnie
    ipfwadm -I -a accept -P tcp -S $DNSADDR/32 53   # otwiera ISP pierwszy DNS
    ipfwadm -I -a accept -P udp -S $DNSADDR/32 53/
    if [ "$DNSADDR1" ]; then             # Jeśli podano to również drugi
      ipfwadm -I -a accept -P tcp -S $DNSADDR1/32 53    # otwiera ISP drugi DNS
      ipfwadm -I -a accept -P udp -S $DNSADDR1/32 53
    fi
[color=red]    ipfwadm -I -a $Pd   -P tcp -D $ALL 53 -o      # blokuje pozostaly ruch na port tcp 53
    ipfwadm -I -a $Pd   -P udp -D $ALL 53 -o      # i port udp 53[/color]
fi