Proxy denying connection but not giving reason

[flyerhawk]

We are trying to connect to our slack instance but we are getting the following error..

Sep 5 19:02:40 host SyslogAccess: Info: 1504638160.662 4 10.137.144.175 TCP_DENIED/407 0 CONNECT tunnel://xxxx.slack.com:443/ - NONE/- - OTHER-NONE-VPN_Users-NONE-NONE-NONE-NONE <-,-,-,"-",-,-,-,-,"-",-,-,-,"-",-,-,"-","-",-,-,-,-,"-","-","-","-","-","-",0.00,0,-,"-","-",-,"-",-,-,"-","-"> -

Why am I not getting any details on why it is denying the connection?

[balaji.bandi]

Check the logs settings, depends on how you configure your log settings.

BB

[karajulu1]

As per the access logs - TCP_DENIED/407 mean, it needs user authentication for allowing it in the proxy.

Are you accessing this via any application or Web browser ?

If its an application - please check the proxy configuration to add user ID and password for proxy auth.

Note : Some cases you might notice TCP_DENIED/407 and followed by TCP_MISS/200 - then that traffic is allowed in the proxy.