Except that nc is considered a security risk, and usually not installed on our systems.
Though, a while back though some ASAs were able to get approval from IT Security to have it installed on their servers with the promise that they wouldn't do anything bad with it. telnet confuses IT Security though....officially telnet has been banned for years as a security risk....port 23 has been blocked at the border for about 5 years now. Though IT Security decreed last year that ssh/22 was a security risk (after an incident of a webserver getting DoS'd on port 22)...so it is also being blocked now (along with 25, 3389 and 5900). There is the process of moving to blocking port 53 at the border because last friday our 2gig link was pegged with DDoS traffic hammering our authoritative-only nameservers. It had been months since the last incident, where they only hit one of our 3 authoritative-only namservers...and pegged the 1gig interface on the server (though for the switch its 1gig for every 3 ports?...and the boxes have multiple VMs, not sure what all was impacted aside from our Samba server.) ----- Original Message ----- > > On May 7, 2013, at 11:27 AM, Corey Quinn <[email protected]> > wrote: > >> On my RHEL5 boxes, it's there usually. Centos6? Nope. > >> > >> [root@chmura ~]# telnet > >> -bash: telnet: command not found > >> > > > > Well "telnet" for this is deprecated-- "nc" is the way to go. > > I'm curious "why", other than "This is newer and shinier". > > D > -- Who: Lawrence K. Chen, P.Eng. - W0LKC - Senior Unix Systems Administrator For: Enterprise Server Technologies (EST) -- & SafeZone Ally Snail: Computing and Telecommunications Services (CTS) Kansas State University, 109 East Stadium, Manhattan, KS 66506-3102 Phone: (785) 532-4916 - Fax: (785) 532-3515 - Email: [email protected] Web: http://www-personal.ksu.edu/~lkchen - Where: 11 Hale Library _______________________________________________ Discuss mailing list [email protected] https://lists.lopsa.org/cgi-bin/mailman/listinfo/discuss This list provided by the League of Professional System Administrators http://lopsa.org/
