ref: 5622b0bbd878dbc34045cc6fd37cffa64461eabe
dir: /rc/bin/netaudit/
#!/bin/rc
rfork e
net=/net
if(~ $#* 1)
net=$1
fn query {
ndb/query -x $net -cia $*
}
fn checkether {
echo -n ' '$1'='$2
if(! ~ $2 [0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f])
echo ' has wrong format'
if not if(! grep -s $i $net/ether*/addr)
echo ' does not belong to any network interface'
if not
echo ' looks ok'
}
fn checkip {
echo -n ' '$1'='$2
if(! ~ $2 *.*.*.* *:*:*:*:*:*:*:* *::*)
echo ' does not look like an ip address'
if not
echo ' looks ok'
}
fn checksys {
echo -n ' '$1'='$2
if(~ $2 *.*)
echo ' contains a dot, it will be confused for a domain name or ip address'
if not
echo ' looks ok'
}
fn checkdom {
echo -n ' '$1'='$2
if(! ~ $2 *.*)
echo ' does not have a dot'
if not if(~ $2 *.)
echo ' has a trailing period'
if not
echo ' looks ok'
}
fn checkhost {
if(~ $sysname ''){
echo 'env var $sysname is not set'
exit 'fail'
}
checksys 'env var $sysname' $sysname
echo 'checking this host''s tuple:'
sys=`{query sys $sysname sys}
if(! ~ $sysname $sys)
echo ' no sys= entry'
if not {
for(i in $sys){
checksys sys $i
}
}
ip=`{query sys $sysname ip}
if(~ $ip '')
echo ' no ip= entry'
if not {
for(i in $ip){
checkip ip $i
}
}
dom=`{query sys $sysname dom}
if(~ $dom '')
echo ' no dom= entry'
if not {
for(i in $dom){
checkdom dom $i
if(! ~ $i $sysname^.*)
echo ' dom='$i 'does not start with' $sysname^'; it''s supposed to be the FQDN, not the domain name!'
}
}
ether=`{query sys $sysname ether}
if(~ $ether '')
echo ' no ether entry'
if not {
for(i in $ether){
checkether ether $i
}
}
}
fn checknet {
echo 'checking the network tuple:'
ipnet=`{query sys $sysname ipnet}
if(~ $ipnet ''){
echo ' we are not in an ipnet, so looking for entries in host tuple only'
}
if not {
echo ' we are in ' 'ipnet='^$ipnet
}
ipgw=`{query sys $sysname ipgw}
if(~ $ipgw '' '::'){
echo ' we do not have an internet gateway, no ipgw= entry'
}
if not {
for(i in $ipgw) {
checkip ipgw $i
}
}
dns=`{query sys $sysname dns}
if(~ $dns '')
echo ' no dns= entry'
if not {
for(i in $dns){
if(! ip/ping -n 1 $i >/dev/null >[2=1])
echo ' dns='$i 'does not reply to ping'
if not
echo ' dns='$i 'looks ok'
}
}
auth=`{query sys $sysname auth}
if(~ $auth '')
echo ' no auth= entry'
if not {
for(i in $auth){
if(! ip/ping -n 1 $i >/dev/null >[2=1])
echo ' auth='$i 'does not reply to ping'
if not {
authok=1
echo ' auth='$i 'looks ok'
}
}
}
fs=`{query sys $sysname fs}
if(~ $fs '')
echo ' no fs= entry (needed for tls boot)'
if not {
for(i in $fs){
if(! ip/ping -n 1 $i >/dev/null >[2=1])
echo ' fs='$i 'does not reply to ping (needed for tls boot)'
if not
echo ' fs='$i 'looks ok'
}
}
}
fn checkauth {
echo 'checking auth server configuration:'
if(~ $auth ''){
echo ' no auth server'
exit fail
}
if not {
for(i in $auth){
if(~ $i $sys $dom $ip){
echo ' we are the auth server '^$i
authisus=1
}
}
}
if(~ $authisus 1){
if(! grep -s keyfs <{ps})
echo ' auth/keyfs is not running, try reboot'
if not
echo ' auth/keyfs is running'
if(! grep -s 'Listen *567' <{netstat -n $net})
echo ' no one listening on port 567, try reboot'
if not {
echo ' someone is listening on port 567'
echo ' run auth/debug to test the auth server'
}
echo ' run auth/asaudit to verify auth server configuration'
}
if not {
echo ' we are not the auth server(s):' $auth
echo ' if this is a mistake, set auth='$sys(1) 'or auth='^($sys(2-) $dom)
if(~ $authok 1)
echo ' run auth/debug to test the auth server'
}
}
fn checksec {
echo 'checking basic security:'
for(fs in `{query sys $sysname fs}) @{
rfork n
if(srv $fs netaudit.$pid >[2] /dev/null || srvtls $fs netaudit.$pid >[2] /dev/null){
if(mount -N /srv/netaudit.$pid /n/netaudit >/dev/null >[2=1])
echo ' fs='$fs 'allows none attach. mistake?'
if not
echo ' fs='$fs 'does not allow none attach. ok'
if(mount -n /srv/netaudit.$pid /n/netaudit >/dev/null >[2=1])
echo ' fs='$fs 'does not require auth for user '^$user^'. mistake?'
if not
echo ' fs='$fs 'seems to require auth. ok'
}
if not
echo ' fs='$fs 'is not listening'
rm -f /srv/netaudit.$pid
}
}
checkhost
checknet
checkauth
checksec