kernel: Firewall: *SYNFLOOD Blocked*

CSF Firewall is blocking these attacks in /var/log/messages Feb 25 02:13:33 servidor kernel: Firewall: *SYNFLOOD Blocked* IN=eth1 OUT= MAC=00:25:90:de:d3:d5:00:19:e8:f4:7a:3f:08:00 SRC=120.43.114.117 DST=64.150.187.59 LEN=52 TOS=0x00 PREC=0x00 TTL=47 ID=21531 DF PROTO=TCP SPT=4760 DPT=80 WINDOW=65535 RES=0x00 SYN URGP=0 Check with # netstat -alntp | grep SYN | wc -l You have set the following in your csf configuration but having such a setting, we…

Change Exim Sending IP

If you want everyone on the server to send out on the same IP, just add the following to # nano /etc/mailips: *: xxx.xxx.xxx.xxx Then add the IP and it’s matching PTR to /etc/mail_reverse_dns: # nano /etc/mail_reverse_dns # xxx.xxx.xxx.xxx hostname.tld This will tell Exim to use that IP for any sender on the server. Restart exim # service exim restart