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Hourly - Entry Level ($) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
Looking for someone experienced with iptables firewall rules for automatically preventing DOS attacks (we currently have a bansshee chain but need more). ... .***.52 - - [18/May/2016:14:17:43 +0000] "POST /xmlrpc.php HTTP/1.0" 500 251 "-" "Mozilla/4.0 (compatible: MSIE 7.0; Windows NT 6.0)" [root@ip-172-31-52-*** httpd]# dmesg|tail [4113217.772860] [ 7977] 48 7977 79889 278 116 3 1061 0 httpd [4113217.777123] [ 7978] 48 7978 79889 282 116 3 1060 0 httpd [4113217.781867] [ 7979] 48 7979 80195 849 120 3 853 0 httpd [4113217.787834] [ 7980] 48 7980 80195 854 120 3 848 0 httpd [4113217.792127] [ 7981] 48 7981 84467 5406 129 3 685 0 httpd [4113217.797090] [ 7982] 48 7982 79889 278 116 3 1061 0 httpd [4113217.801942] [ 7983] 48 7983 79889 277 116 3 1061 0 httpd [4113217.807463] [ 7984] 48 7984 85260 6057 131 3 775 0 httpd [4113217.812380] Out of memory: Kill process 7169 (mysqld) score 14 or sacrifice child [4113217.816698] Killed process 7169 (mysqld) total-vm:892720kB, anon-rss:5992kB, file-rss:0kB [root@ip-172-31-52-206 httpd]# iptables -L -n Chain INPUT (policy ACCEPT) target prot opt source destination DROP all -- 191.96.249.20 0.0.0.0/0 DROP all -- 159.122.224.173 0.0.0.0/0 DROP all -- 185.130.4.120 0.0.0.0/0 DROP all -- 185.130.4.197 0.0.0.0/0 bansshee all -- 0.0.0.0/0 0.0.0.0/0 DROP all -- 185.103.252.170 0.0.0.0/0 DROP all -- 185.106.92.160 0.0.0.0/0 DROP all -- 185.130.5.165 0.0.0.0/0 DROP all -- 0.0.0.0/0 0.0.0.0/0 STRING match "*hidehost.net" ALGO name bm TO 65535 Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination Chain bansshee (1 references) target prot opt source destination DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 state NEW recent: CHECK seconds: 60 hit_count: 15 name: apachehammer side: source mask: 255.255.255.255
Skills: Iptables LAMP Administration MySQL Administration
Hourly - Entry Level ($) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
I have a Ubiquiti EdgerouterX and a Grandstream UCM6104 appliance. I am currently having two separate problems. 1) When i make calls from external to the grandstream there is no audio 2) All external SIp calls are terminated after 32 seconds I am currently using NAT and NOT using the standard asterisk port of 5060 or standard RTP ports (currently using 10,000-11,000) I need some help configuring the firewall to enable the SIP properly on the firewall.
Skills: Iptables Asterisk Firewall