Hi Guys, nice topic.
Sorry, I don't wanna hijack the discussion but there's a similar demand I've been working on. In my case it's a switch assessment, but the idea is more or less the same (and also using telnet)...(and this subject is also new to me)...
Francesco,
I ran the script you shared (thanks for that!). The only lib I had to install was pexpect. Btw, I'm running CentOS in a VM on my laptop.. there are a lot less issues related to lib compatibility...
For my test I replaced all command lines sent to the devices to just:
output = tn.write("show version\r\n")
print(output)
However, it looks like it didn't run successfully. Following the logs:
[root@localhost flavio]# python test3.py
Username: admin
Password:
list or ip: list
Path and filename: /home/flavio/Devices.txt
Telnet(10.0.0.1,23): recv '\xff\xfb\x01\xff\xfb\x03\xff\xfd\x18\xff\xfd\x1f'
Telnet(10.0.0.1,23): IAC WILL 1
Telnet(10.0.0.1,23): IAC WILL 3
Telnet(10.0.0.1,23): IAC DO 24
Telnet(10.0.0.1,23): IAC DO 31
Telnet(10.0.0.1,23): recv '\r\nUser Access Verification\r\n\r\nUsername: '
Telnet(10.0.0.1,23): send 'admin\r\n'
PASS
Telnet(10.0.0.1,23): recv '\xff\xfc\x01\xff\xfc\x03\xff\xfe\x18\xff\xfe\x1f'
Telnet(10.0.0.1,23): IAC WONT 1
Telnet(10.0.0.1,23): IAC WONT 3
Telnet(10.0.0.1,23): IAC DONT 24
Telnet(10.0.0.1,23): IAC DONT 31
Telnet(10.0.0.1,23): recv 'admin'
Telnet(10.0.0.1,23): recv '\r\nPassword: '
Telnet(10.0.0.1,23): send 'C1sc0123\r\n'
Telnet(10.0.0.1,23): send 'show version\r\n'
None
I was able to get it working using netlib, with the attached script..It does a "show version" and stores the output in a txt file with the switch ip as the file name... The problem is that for most switches it works fine, but for some other it doesn't bring any output(if I access the switch manually, it returns the information fine), that's why I'm also trying telnetlib.... also authentication fails when I try to access tacacs managed devices, but I workaround this issue by sending authentication as commands (in another script)...
Thanks.
