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ntalkd
Talkd /Ntalkd supposedly has its security issues (but I would not know how serious these are)
ntalkd
Check out this thread
(macosx.com, is it allright if I link there?) for more details.
doei.
ntalkd
The remote aspect of ntalk does represent a security risk. However, if you only use it as the original poster suggested (ie only talk to people SSH'd into your local machine), just make sure that UDP 517 is allowed from 127.0.0.1 to 127.0.0.1 and not from the internet. You are running a firewall right? Someone would have to have have shell access to your box to exploit talk and at that point you have bigger problems than running talk :)
ntalkd
I believe older versions of talkd didn't check for ;'s in domain names and used system commands. In theory, someone could talk to a machine and pass commands after the ;. Since talkd runs under root, damage could be done. |
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