Cisco PIX 515 telnet problem

Jan 18, 2006 4 Replies
Cisco PIX 515 telnet problem open original image

Hi all,



I am setting a PIX 515 running on 6.3(5) for one of my customers. I have no problem telnetting from DMZ network to the DMZ interface ip address. But when I tried to telnet from Outside (internet) to the outside interface ip address, I just can't. I have no problem accessing the PDM from Outside and DMZ via https.



I have already key in the command "telnet 0.0.0.0 0.0.0.0 outside" but it doesn't seem to work at all. Guys, have any idea on what else could be the reason? Thanks.


Hi,

You can only telnet to the outside interface using SSH for security reasons. Set up SSH and RSA Keys then use a simple SSH client such as puTTY.

Regards,

Martin

should work but what i wouls suggest:

en configure terminal ssh 0.0.0.0 0.0.0.0 outside write memory exit

and use Putty or SSH (freeware) client from

formatting link
Why Security reason

Robert

PIX will by design not allow telnet to outside interface. Yes, you can configure it, but it will not work, and you will get this error in the log: "...packet is not an IPSEC packet." i.e. the PIX expects a SSH connection.

Setup SSH instead - and make a custom to do that for every firewall you setup, and telnet is considered a insecure protocol, and fx can easly bee sniffed and you firewall could be compromised as a consequence.

HTH Martin Bilgrav

"Guan Foo Wah" skrev i en meddelelse news:43ce626e snipped-for-privacy@news.tm.net.my...

Not -exactly-. PIX does not permit *cleartext* telnet to the outside interface. If you have a VPN established which includes the outside interface [i.e., the public IP] then you can telnet to the PIX over the VPN.

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required