Monthly Archives: March 2013

Another salad

This salad is good for ypur digestion, tasty, and good for your figure 😉 Ingredients : Half of the green salad (fresh) A peace of celery – grated Three green olives, diced A bit of grated cheese A bit of … Continue reading

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DoS and DDoS attacks

Short definition : In computing, a denial-of-service attack (DoS attack) or distributed denial-of-service attack (DDoS attack) is an attempt to make a machine or network resource unavailable to its intended users. Odličan link. How to detect them # netstat -ntu … Continue reading

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Sendmail testing ports 25 and 110

Testing on port 110 – POP3 – listing messages in INBOX and downloading messages # telnet 10.10.10.94 110 Trying 10.10.10.94… Connected to 10.10.10.94 (10.10.10.94). Escape character is ‘^]’. +OK POP3 mail94.my.domain v2003.83rh server ready user user1 +OK User name accepted, … Continue reading

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Iptables logging of DRP-ped packages

Iptables logging is a very useful tool to nasty things done to your server. Possible logging levels : 0 emerg, 1 alert, 2 crit, 3 err, 4 warning, 5 notice, 6 info, 7 debug I want to log only packages … Continue reading

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