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ServerIron ADX Security Guide 31
53-1002440-03
Maximum connections
1
show server conn-rate
Use show server conn-rate to display the global TCP connection rate (per second) and TCP SYN
attack rate (per second). This command reports global connection rate information for the
ServerIron as well as for each real server.
Maximum connections
Use max-conn to set the number of maximum connections on a global real server level (all ports) or
a single port.
clear statistics dos-attack
Use clear statistics dos-attack to reset counters for ICMP and TCP SYN packet burst thresholds, as
displayed by show statistics dos-attack.
Example
ServerIronADX# clear statistics dos-attack
ServerIronADX# show statistics dos-attack
NOTE
The above commands are used to reset and verify counters for ICMP and TCP SYN packet burst
thresholds. The ServerIron ADX has introduced more a powerful feature to detect and block DoS
attacks. Please refer to the chapter titled: “Syn-Proxy and DoS Protection” on page 113 to view
details about verifying and clearing DOS-attack counters and filters.
ServerIronADX# show server conn-rate
Avail. Sessions = 524286 Total Sessions = 524288
Total C->S Conn = 0 Total S->C Conn = 0
Total Reassign = 0 Unsuccessful Conn = 0
last conn rate = 0 max conn rate = 0
last TCP attack rate = 0 max TCP attack rate = 0
SYN def RST = 0 SYN flood = 0
Server State - 1:enabled, 2:failed, 3:test, 4:suspect, 5:grace_dn, 6:active
Real Server State CurrConn TotConn LastRate CurrRate MaxRate
rs1 3 0 0 0 0 0
All ports
One port
!
server real rs1 10.10.1.30
max-conn 1200
port http
port http max-conn 1000
port http url "HEAD /"
!