[tac_plus] tacplus timeout values

[Kevin.Cruse at Instinet.com]

Hi All

I am having some issues with our tacacs clients timing out quite
frequently. We have hundreds of network devices pointing to 2 tacacs
servers and many users complain they are prompted for a password a few
times before getting authenticated or their session being terminated. This
does not happen constantly all day long but seems rather random.  I also
notice there are 'tacacs' timeout messages in our logging buffers. I have a
suspicion the tacacs server is busy handling requests and users get backed
up in a queue and router timeout is reached before daemon can respond. I
run the daemon with following command:

tac_plus -C /usr/local/sbin/tacplus/tac_plus.cfg -L -p 49 -G

Ok - now you are probably asking "why does he run it in
foreground?"...well...I cannot prove this but it seems there were some
security changes performed on our hosts which prevented me from running it
without the -G. I had been running the daemon with this command:

tac_plus -C /usr/local/sbin/tacplus/tac_plus.cfg -L -p 49

quite happily for sometime. We then had some maintenance work to test ldap
failover and when i restarted the daemon it would not start unless i ran in
foreground. i've been working with our admin team to resolve but still
cannot figure out why one day it just stopped working ( We run it on centos
7 ). Anyway - im getting away from my original question. I am fielding alot
of complaints about these timeouts and hope someone has had similar issues
and can provide some direction. Many thanks!!!


$ ./tac_plus -v
tac_plus version F4.0.4.28


-----------------------------------------------------------------
Kevin Cruse
US Networks
Instinet LLC
309 West 49th Street
New York, NY 10019 US
kevin.cruse at instinet.com
212-310-4734

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