pinging network script

jlliagre · 11-28-2007, 02:42 PM

Quote:

Originally Posted by metallica1973

I promise I wont ask for anymore help but how can I have this script:

[php... [/php]to include the hostname of the device and have two different categories of devices like NAM's and Sniffers. like for example:

PHP Code:



 NAM             status   telnet 
 127.0.0.1       up       closed 
 192.168.1.1     up       open   
 192.168.1.2     up       closed 
 192.168.1.3     down     n/a  

 Sniffers       status    telnet 
 127.0.0.1       up       closed 
 192.168.1.1     up       open   
 192.168.1.2     up       closed 
 192.168.1.3     down     n/a

I see in your example neither the hostname nor two different categories as both lists have the same IPs.

Anyway, for the first request, just run the script twice with a different set of adresses. For adding the hostnames, that may depend on what naming service is in use on your WAN. (plain files, DNS, NIS, LDAP, ...).

metallica1973 · 11-29-2007, 05:30 AM

PHP Code:



NAM            HOSTNAME     Status   Telnet   
127.0.0.1      Localhost    up       closed   
192.168.1.1    Test1        up       open     
192.168.1.2    Test2        up       closed   
192.168.1.3    Test3        down     n/a    
  
Sniffers       Status   Telnet   
12.6.3.60      up       closed   
192.168.5.1    up       open     
192.168.8.2    up       closed   
192.168.9.3    down     n/a

That is what I need. How can this be achieved?

jlliagre · 11-29-2007, 05:37 AM

Where do Test1, Test2 and so on names come from ?

metallica1973 · 11-29-2007, 05:55 AM

That is just an example. Can I have this script not only ping the ip address from the namlist file which only has ip addresses and not hostnames(to many)but also include what the hostnames are by using better logic? for example when I perform ping -a using windows it will return the hostname of the device.In other words can we modify the script so that when it pings it will also include the hostname but truncates it to only to 6 characters if it is to long to keep the formating neat from the ip address from the namlist file and vice versa from the snifflist file(it only has host names, no ip address - the reason is that the ip address change and the hostnames are permanent). I see that we will have to use nslookup to get the hostname from devices!

PHP Code:



#!/bin/ksh 
exec 2>/dev/null 
printf " %-20.20s %-8s %-6s\n" NAM Status Telnet 
echo "=====================================" 
for NAM in $(<namlist) 
do 
        status=down 
       telnet=closed 
        if ping $NAM 5 >/dev/null 2>&1 
        then 
                status=up 
                read foo < /dev/tcp/$NAM/23 && telnet=open 
        else 
                telnet="n/a" 
        fi 
        printf " %-20.20s %-8s %-6s\n" $NAM $Status $Telnet 
 
done 
 
echo 
 
exec 2>/dev/null 
printf " %-20.20s %-8s %-6s\n" SNIFFERS Status Telnet 
echo "=====================================" 
for SNIFFERS in $(<snifflist) 
do 
        status=down 
        telnet=closed 
        if ping $SNIFFERS 5 >/dev/null 2>&1 
        then 
                status=up 
                read foo < /dev/tcp/$SNIFFERS/23 && telnet=open 
        else 
                telnet="n/a" 
        fi 
        printf " %-20.20s %-8s %-6s\n" $SNIFFERS $Status $Telnet 
done

and have it look like this:

PHP Code:



NAM          HOSTNAME  Status Telnet  Sniffers     HOSTNAME Status Telnet    
127.0.0.1    Localhost up     closed  192.168.16.4 s00cbbd  up     closed    
192.168.1.1  NAM1      up     open    192.168.16.5 s00cbbf  up     open      
192.168.1.2  NAM2      up     closed  192.168.16.6 s00cbbg  up     closed    
192.168.1.3  NAM3      down   n/a     192.168.16.7 s00cbbj  down   n/a

jlliagre · 11-29-2007, 08:25 AM

There is not necessarily a one to one correspondance between hostnames and IP addresses.

You can resolve a name to an IP with the "dig" command, eg:

Code:

$ dig +short www.linuxquestions.org
64.179.4.146

The opposite is slightly more complex and will slow down your script if some IPs can't be resolved.

metallica1973 · 11-29-2007, 09:12 AM

so how would I add

PHP Code:



$ dig +short www.linuxquestions.org 
64.179.4.146

this to my script

PHP Code:



for NAM in $(<namlist) 
do 
        status=down 
        telnet=closed 
        if ping $NAM 5 >/dev/null 2>&1 
        then 
                status=up 
                read foo < /dev/tcp/$NAM/23 && telnet=open 
        else 
                telnet="n/a" 
        fi 
        printf " %-20.20s %-8s %-6s\n" $NAM $status $telnet 
 
done 
 
echo 
 
exec 2>/dev/null 
printf " %-20.20s %-8s %-6s\n" SNIFFERS Status Telnet 
echo "=====================================" 
for SNIFFERS in $(<snifflist) 
do 
        status=down 
        telnet=closed 
        if ping $SNIFFERS 5 >/dev/null 2>&1 
        then 
                status=up 
                read foo < /dev/tcp/$SNIFFERS/23 && telnet=open 
        else 
                telnet="n/a" 
        fi 
        printf " %-20.20s %-8s %-6s\n" $SNIFFERS $Status $Telnet 
done

and have the formating like

PHP Code:



NAM          HOSTNAME  Status Telnet  Sniffers     HOSTNAME Status Telnet     
127.0.0.1    Localhost up     closed  192.168.16.4 s00cbbd  up     closed     
192.168.1.1  NAM1      up     open    192.168.16.5 s00cbbf  up     open       
192.168.1.2  NAM2      up     closed  192.168.16.6 s00cbbg  up     closed     
192.168.1.3  NAM3      down   n/a     192.168.16.7 s00cbbj  down   n/a

I promise this is the last questions and then I will go buy a basic shell scripting book. My word of honor!

metallica1973 · 11-29-2007, 10:30 AM

I really apprieciate all of your help. I think this post is too long so I start it in another post. thanks to all for your help. To finish this post with class I will post my grand creation. It still needs work. This script will scan for network devices via IP and or Hostnames and produce a nice file.

PHP Code:



#!/bin/ksh 
NAMFILE="nam_output" 
SNIFFILE="sniffer_output" 
OUT="Report" 
MAIL_LIST="test_admin@ccc.edu" 
 
> $NAMFILE 
> $SNIFFILE 
> $OUT 
 
echo       Daily Sniffer and NAMs Scan as of `date` >> $OUT 
echo       Script run with a 5 sec timeout >> $OUT 
 
echo >>$OUT 
exec 2>/dev/null 
printf " %-15.20s %-8s %-6s \n" NAM Status Telnet >> $NAMFILE 
 
echo "=======================================================" >>$NAMFILE 
for NAM in $(<namlist) 
 
do 
        Status=down 
        Telnet=closed 
        if ping $NAM 5 >/dev/null 2>&1 
        then 
                Status=up 
                read foo < /dev/tcp/$NAM/23 2>/dev/null && Telnet=open 
#               hname="$(nslookup $NAM | tail -4 | head -1 | awk -F'=' '{print $2}'| sed 's/ //g')" 
#               Hostname="${hname%%.*}" 
                [[ -z "$Hostname" ]] && Hostname="n/a" 
                printf " %-15.20s %-8s %-6s \n" $NAM $Status $Telnet >> $NAMFILE 
        else 
                Telnet="n/a" 
                printf " %-15.20s %-8s %-6s \n" $NAM $Status $Telnet >> $NAMFILE 
        fi 
 
 
done 
 
printf " %-8.20s %-15.20s %-8s %-6s \n" SNIFFERS IP_Address Status Telnet >> $SNIFFILE 
 
echo "======================================================" >> $SNIFFILE 
 
for SNIFFERS in $(<snifflist) 
 
do 
        Status=down 
        Telnet=closed 
        if ping $SNIFFERS 5 >/dev/null 2>&1 
        then 
                Status=up 
                read foo < /dev/tcp/$SNIFFERS/23 2>/dev/null &&  Telnet=open 
                IP_Addr="$(nslookup $SNIFFERS | tail -2 |head -1 | awk -F: '{print $2}'| sed 's/ //g')" 
                IP_Address="${IP_Addr%.*}" 
                [[ -z "$IP_Address" ]] && IP_Address="n/a" 
                printf " %-15.20s %-15.20s %-8s %-6s \n" $SNIFFERS $IP_Address $Status $Telnet >>$SNIFFILE 
        else 
                IP_Address="$(nslookup $SNIFFERS | tail -2 |head -1 | awk -F: '{print $2}'| sed 's/ //g')" 
                [[ -z "$IP_Address" || "$IP_Address" == "SERVFAIL" ]] && IP_Address="n/a" 
                Telnet="n/a" 
                printf " %-15.20s %-15.20s %-8s %-6s \n" $SNIFFERS $IP_Address $Status $Telnet >>$SNIFFILE 
 
        fi 
 
done 
 
 
cat $NAMFILE $SNIFFILE >> $OUT 
mailx -s"Daily NAM and Sniffer Report" $MAIL_LIST < $OUT

It still needs a lot of work and use at your own risk.

metallica1973 · 12-19-2007, 11:39 AM

ok I was able to get nmap so can you please modify the current script to include nmap and then I will cry tears of joy!

matthewg42 · 12-19-2007, 12:38 PM

Post #6 in this thread was me saying "nmap will do what you want"

metallica1973 · 12-19-2007, 07:59 PM

from here, how would I plug that in to get it to work.

PHP Code:



nmap -sP -iL hostlist.txt

inside of this

PHP Code:



#!/bin/ksh
NAMFILE="nam_output"
SNIFFILE="sniffer_output"
OUT="Report"
MAIL_LIST="test_admin@ccc.edu"

> $NAMFILE
> $SNIFFILE
> $OUT

echo       Daily Sniffer and NAMs Scan as of `date` >> $OUT
echo       Script run with a 5 sec timeout >> $OUT

echo >>$OUT
exec 2>/dev/null
printf " %-15.20s %-8s %-6s \n" NAM Status Telnet >> $NAMFILE

echo "=======================================================" >>$NAMFILE
for NAM in $(<namlist)

do
        Status=down
        Telnet=closed
        if ping $NAM 5 >/dev/null 2>&1
        then
                Status=up
                read foo < /dev/tcp/$NAM/23 2>/dev/null && Telnet=open
#               hname="$(nslookup $NAM | tail -4 | head -1 | awk -F'=' '{print $2}'| sed 's/ //g')"
#               Hostname="${hname%%.*}"
                [[ -z "$Hostname" ]] && Hostname="n/a"
                printf " %-15.20s %-8s %-6s \n" $NAM $Status $Telnet >> $NAMFILE
        else
                Telnet="n/a"
                printf " %-15.20s %-8s %-6s \n" $NAM $Status $Telnet >> $NAMFILE
        fi


done

printf " %-8.20s %-15.20s %-8s %-6s \n" SNIFFERS IP_Address Status Telnet >> $SNIFFILE

echo "======================================================" >> $SNIFFILE

for SNIFFERS in $(<snifflist)

do
        Status=down
        Telnet=closed
        if ping $SNIFFERS 5 >/dev/null 2>&1
        then
                Status=up
                read foo < /dev/tcp/$SNIFFERS/23 2>/dev/null &&  Telnet=open
                IP_Addr="$(nslookup $SNIFFERS | tail -2 |head -1 | awk -F: '{print $2}'| sed 's/ //g')"
                IP_Address="${IP_Addr%.*}"
                [[ -z "$IP_Address" ]] && IP_Address="n/a"
                printf " %-15.20s %-15.20s %-8s %-6s \n" $SNIFFERS $IP_Address $Status $Telnet >>$SNIFFILE
        else
                IP_Address="$(nslookup $SNIFFERS | tail -2 |head -1 | awk -F: '{print $2}'| sed 's/ //g')"
                [[ -z "$IP_Address" || "$IP_Address" == "SERVFAIL" ]] && IP_Address="n/a"
                Telnet="n/a"
                printf " %-15.20s %-15.20s %-8s %-6s \n" $SNIFFERS $IP_Address $Status $Telnet >>$SNIFFILE

        fi

done


cat $NAMFILE $SNIFFILE >> $OUT
mailx -s"Daily NAM and Sniffer Report" $MAIL_LIST < $OUT

I need to keep the same formatting