Hi! I was responding an incident last night and saw a strange performance problem with a cisco 7200. When I issued a "sh interface" on the two fast ethernets of my box it was show that I got only 6Mbps traffic and normal packet per second rate but when I "sh logg" the box I got a lot of "%RCMD-4-RSHPORTATTEMPT: Attempted to connect to RSHELL from x.y.z.w" messages with spoofed sources. Investigating a little more I discovered that this traffic was pushing the CPU to 98% to 100% of utilization. Back to the output of "sh logg" I saw that the box was logging 2 to 3 RSHELL messages per second. In my opinion this coulndīt affect the CPU so much. The router have 256M of RAM and itīs a 7200! I coulndīt gather more info about this incident because it stopped before I could get the data. The strange thing itīs that the high CPU utilization stopped too. I donīt know if this is a problem of this cisco model or if Iīm missing something. Any ideias? [] lwulff _______________________________________________________________________ Yahoo! Mail O melhor e-mail gratuito da internet: 6MB de espaįo, antivírus, acesso POP3, filtro contra spam. http://br.mail.yahoo.com/ ---------------------------------------------------------------------------- *** Wireless LAN Policies for Security & Management - NEW White Paper *** Just like wired networks, wireless LANs require network security policies that are enforced to protect WLANs from known vulnerabilities and threats. Learn to design, implement and enforce WLAN security policies to lockdown enterprise WLANs. To get your FREE white paper visit us at: http://www.securityfocus.com/AirDefense-incidents ----------------------------------------------------------------------------
This archive was generated by hypermail 2b30 : Thu May 22 2003 - 12:22:21 PDT