348 V6100 and V7122 User GuideExplanation of the example access list:This access list consists of three rules: Rule #10: traffic from the subnet 10.xxx.yyy.zzz is allowed if the traffic rate does notexceed 40 KB/s. Rule #15: if a packet didn't match rule #10, that is, the excess traffic is over 40 KB/s, andcoming from the subnet 10.31.4.xxx to ports 4000 to 9000, then it is allowed. Rule #20: all other traffic (which didn't match the previous rules), is blocked.The internal firewall can also be configured via the Embedded Web Server (see Configuringthe Firewall Settings).Network Port UsageThe following table lists the default TCP/UDP network port numbers used by the V7122.Where relevant, the table lists the ini file parameters that control the port usage and providesource IP address filtering capabilities.Table 78 Default TCP/UDP Network Port NumbersPort Number Peer Port Application Notes2 2 Debugging interface Always ignored23 - TelnetDisabled by default (TelnetServerEnable).Configurable (TelnetServerPort), accesscontrolled by WebAccessList68 67 DHCP Active only if DHCPEnable = 180 - Web server (HTTP)Configurable (HTTPPort), can be disabled(DisableWebTask or HTTPSOnly). Accesscontrolled by WebAccessList161 - SNMP GET/SETConfigurable (SNMPPort), can be disabled(DisableSNMP). Access controlled bySNMPTrustedMGR443 - Web server (HTTPS)Configurable (HTTPSPort), can be disabled(DisableWebTask). Access controlled byWebAccessList500 - IPSec IKE Can be disabled (EnableIPSec)Not supported in the current version.6000, 6010and up - RTP trafficBase port number configurable (BaseUDPPort),fixed increments of 10. The number of portsused depends on the channel capacity of thedevice.6001, 6011and up - RTCP traffic Always adjacent to the RTP port number
