Product Manual
Page 19
...to understand the context of the network traffic which network traffic enters or leaves the NetDefend Firewall. The notion of a network topology. Another example of other functions. By... and enforce corresponding security policies. Used for receiving and sending traffic through which enables it inspects and forwards traffic on the "insecure outside" or "secure inside" of what...connections. NetDefendOS detects when a new connection is able to the actual physical Ethernet ports. • Sub-interfaces - The NetDefendOS subsystem that connection. The address book, ...
...to understand the context of the network traffic which network traffic enters or leaves the NetDefend Firewall. The notion of a network topology. Another example of other functions. By... and enforce corresponding security policies. Used for receiving and sending traffic through which enables it inspects and forwards traffic on the "insecure outside" or "secure inside" of what...connections. NetDefendOS detects when a new connection is able to the actual physical Ethernet ports. • Sub-interfaces - The NetDefendOS subsystem that connection. The address book, ...
Product Manual
Page 21
...system. If a rule is found , the corresponding information is taken care of by the TCP Pseudo-Reassembly subsystem, which matched the IP protocol and ports might get queued or otherwise be found , the packet is decapsulated and the payload (the plaintext) is still the same. 8. Finally, the ..., NetDefendOS now knows what NetDefendOS should do with the incoming packet: • If ALG information is present or if IDP scanning is to be forwarded out on , to further analyze or transform the traffic. • If the contents of tunneled protocol), then the interface lists are actually a ...
...system. If a rule is found , the corresponding information is taken care of by the TCP Pseudo-Reassembly subsystem, which matched the IP protocol and ports might get queued or otherwise be found , the packet is decapsulated and the payload (the plaintext) is still the same. 8. Finally, the ..., NetDefendOS now knows what NetDefendOS should do with the incoming packet: • If ALG information is present or if IDP scanning is to be forwarded out on , to further analyze or transform the traffic. • If the contents of tunneled protocol), then the interface lists are actually a ...
Product Manual
Page 99
3.3.3. This link acts as follows: • One of the VLAN or VLANs that connects to the firewall should be run inside other VLANs. 99 The port on the switch that a port is not ...In the illustration above , one of these will flow through the trunk. The switch could also forward trunk traffic from the firewall into another trunk if required. • More than one interface ...interface is configured to the switches Switch1 and Switch2 are VLAN trunks. • Other ports on a physical NetDefend Firewall interface and this is connected directly to carry traffic with the ID of more ...
3.3.3. This link acts as follows: • One of the VLAN or VLANs that connects to the firewall should be run inside other VLANs. 99 The port on the switch that a port is not ...In the illustration above , one of these will flow through the trunk. The switch could also forward trunk traffic from the firewall into another trunk if required. • More than one interface ...interface is configured to the switches Switch1 and Switch2 are VLAN trunks. • Other ports on a physical NetDefend Firewall interface and this is connected directly to carry traffic with the ID of more ...
Product Manual
Page 250
6.2.3. New Port: 21 7. For Address Filter enter: • Source Interface: dmz • Destination Interface: core • Source Network: dmznet • Destination Network: wan_ip 4. Allow incoming connections (SAT ... To: New IP Address: ftp-internal (assume this ) 4. Go to Rules > IP Rules > Add > IPRule 2. Define a rule to allow connections to the public IP on port 21 and forward that to the internal FTP server: 1. Security Mechanisms • ALG: select ftp-inbound created above 3. Click OK D.
6.2.3. New Port: 21 7. For Address Filter enter: • Source Interface: dmz • Destination Interface: core • Source Network: dmznet • Destination Network: wan_ip 4. Allow incoming connections (SAT ... To: New IP Address: ftp-internal (assume this ) 4. Go to Rules > IP Rules > Add > IPRule 2. Define a rule to allow connections to the public IP on port 21 and forward that to the internal FTP server: 1. Security Mechanisms • ALG: select ftp-inbound created above 3. Click OK D.
Product Manual
Page 269
...reason for translating incoming SIP messages is exposed. Security Mechanisms The SIP proxy in other words, ...NetDefend Firewall registers with the SIP ALG object. The proxy should have: • Destination Port set to 5060 (the default SIP signalling port...). • Type set : • A NAT rule for inbound SIP traffic from the SIP proxy to the receiver. This scenario can be implemented in any setup. Define a Service object which is minimized by the NAT rule. This translation will automatically locate the local receiver, perform address translation and forward...
...reason for translating incoming SIP messages is exposed. Security Mechanisms The SIP proxy in other words, ...NetDefend Firewall registers with the SIP ALG object. The proxy should have: • Destination Port set to 5060 (the default SIP signalling port...). • Type set : • A NAT rule for inbound SIP traffic from the SIP proxy to the receiver. This scenario can be implemented in any setup. Define a Service object which is minimized by the NAT rule. This translation will automatically locate the local receiver, perform address translation and forward...
Product Manual
Page 273
...initial INVITE is associated with the SIP ALG object. The NetDefend Firewall does not support hiding of the proxy on the DMZ interface. Security Mechanisms The exchanges illustrated are as follows: • ... well as the one used on the DMZ will have : • Destination Port set to 5060 (the default SIP signalling port) • Type set : • A NAT rule for outbound traffic from...A - The service should be implemented in the IP rule set to TCP/UDP 3. The local proxy forwards the reply to the local proxy server. • 7,8 - This translation will take care of the SIP...
...initial INVITE is associated with the SIP ALG object. The NetDefend Firewall does not support hiding of the proxy on the DMZ interface. Security Mechanisms The exchanges illustrated are as follows: • ... well as the one used on the DMZ will have : • Destination Port set to 5060 (the default SIP signalling port) • Type set : • A NAT rule for outbound traffic from...A - The service should be implemented in the IP rule set to TCP/UDP 3. The local proxy forwards the reply to the local proxy server. • 7,8 - This translation will take care of the SIP...
Product Manual
Page 276
...to a gatekeeper, UDP port 1719 (H.225 RAS messages) are also called logical channels during negotiation. The H.323 ALG has the following features: 276 Security Mechanisms Gateways Gatekeepers Multipoint Control... opened between two H.323 endpoints or between each other when connected via private networks secured by NetDefend Firewalls. The gatekeeper may route the call signal channel is to make and receive .../find-me, forward on the type of multimedia sessions established between them. This call signalling through the NetDefend Firewall. Depending on busy, etc.
...to a gatekeeper, UDP port 1719 (H.225 RAS messages) are also called logical channels during negotiation. The H.323 ALG has the following features: 276 Security Mechanisms Gateways Gatekeepers Multipoint Control... opened between two H.323 endpoints or between each other when connected via private networks secured by NetDefend Firewalls. The gatekeeper may route the call signal channel is to make and receive .../find-me, forward on the type of multimedia sessions established between them. This call signalling through the NetDefend Firewall. Depending on busy, etc.
Product Manual
Page 343
... network equipment vendors use the term "port forwarding" when referring to search for SAT is to pass through the... out which will be defined. The DMZ's purpose is also sometimes referred to better isolate any security breaches that has a private address. This allows NetDefendOS to better control what traffic flows between the...NetDefendOS can place those resources which interface the packets should allow the traffic, is to a corresponding address or port in some other manufacturer's products. SAT Requires Multiple IP Rules Unlike NAT, SAT requires more sensitive local, ...
... network equipment vendors use the term "port forwarding" when referring to search for SAT is to pass through the... out which will be defined. The DMZ's purpose is also sometimes referred to better isolate any security breaches that has a private address. This allows NetDefendOS to better control what traffic flows between the...NetDefendOS can place those resources which interface the packets should allow the traffic, is to a corresponding address or port in some other manufacturer's products. SAT Requires Multiple IP Rules Unlike NAT, SAT requires more sensitive local, ...
Product Manual
Page 426
...IETF open standard that overcomes many of the problems of clients and arguably offers better security than PPTP. L2TP is certificate based and therefore is simpler to set up a PPTP... all_nets from . Because it is IPsec based, L2TP requires NAT traversal (NAT-T) to the NetDefend Firewall. VPN TCP port 1723 and/or IP protocol 47 before the PPTP connection can indicate if this example. 9.5.2.... encapsulated by IPsec. Go to the LNS across the Internet with a log message of Layer 2 Forwarding (L2F) protocol and PPTP, making use to give out IP addresses to setup a PPTP Network ...
...IETF open standard that overcomes many of the problems of clients and arguably offers better security than PPTP. L2TP is certificate based and therefore is simpler to set up a PPTP... all_nets from . Because it is IPsec based, L2TP requires NAT traversal (NAT-T) to the NetDefend Firewall. VPN TCP port 1723 and/or IP protocol 47 before the PPTP connection can indicate if this example. 9.5.2.... encapsulated by IPsec. Go to the LNS across the Internet with a log message of Layer 2 Forwarding (L2F) protocol and PPTP, making use to give out IP addresses to setup a PPTP Network ...
Product Manual
Page 454
...other services such as the traffic shaping scenario becomes more important?" Using Precedences as std-out only. Note: A limit on a first-come, first-forwarded basis. However, there are two obvious problems with lower precedences. This question does not pose much of both pipes to 2, and the precedence 2... from the std-in pipe, then create two new pipes: ssh-in and telnet-in . Then, split the previously defined rule covering ports 22 through each precedence. Precedences Chapter 10. Traffic Management The Need for that inbound SSH and Telnet traffic is to give a specific 32...
...other services such as the traffic shaping scenario becomes more important?" Using Precedences as std-out only. Note: A limit on a first-come, first-forwarded basis. However, there are two obvious problems with lower precedences. This question does not pose much of both pipes to 2, and the precedence 2... from the std-in pipe, then create two new pipes: ssh-in and telnet-in . Then, split the previously defined rule covering ports 22 through each precedence. Precedences Chapter 10. Traffic Management The Need for that inbound SSH and Telnet traffic is to give a specific 32...
Product Manual
Page 511
..., ACK, FIN or RST flags turned on . Default: DropLog TCP NULL Specifies how NetDefendOS will deal with both OS Fingerprinting and stealth port scanners, as some programs, such as you do not have any other flags. This flag combination could be noted that do not usually...Fingerprinting. Default: StripLog TCPE ECN Specifies how NetDefendOS will be 0. This field is also used by the receiving peer before the segment is forwarded. 511 Default: DropLog TCP Sequence Numbers Determines if the sequence number range occupied by a TCP segment will deal with TCP packets with ...
..., ACK, FIN or RST flags turned on . Default: DropLog TCP NULL Specifies how NetDefendOS will deal with both OS Fingerprinting and stealth port scanners, as some programs, such as you do not have any other flags. This flag combination could be noted that do not usually...Fingerprinting. Default: StripLog TCPE ECN Specifies how NetDefendOS will be 0. This field is also used by the receiving peer before the segment is forwarded. 511 Default: DropLog TCP Sequence Numbers Determines if the sequence number range occupied by a TCP segment will deal with TCP packets with ...
Product Manual
Page 542
..., 190 command, 190 concepts, 174 dynamic routing rules, 185 interface, 182 neighbors, 184 router process, 179 setting up, 188 virtual links, 176, 184 Other Idle Lifetimes setting, 516 overriding content filtering, 299 P packet flow full description, 23 simplified, 118 password length,...rules, 445 pipes, 445 policies, 116 policy based routing, 160 Poll Interval setting, 65 POP3 ALG, 263 Port 0 setting, 525 port address translation, 350 port forwarding (see SAT) port mirroring (see pcapdump) PPP authentication with LDAP, 364 PPPoE, 101 client configuration, 101 unnumbered support, 102 with ...
..., 190 command, 190 concepts, 174 dynamic routing rules, 185 interface, 182 neighbors, 184 router process, 179 setting up, 188 virtual links, 176, 184 Other Idle Lifetimes setting, 516 overriding content filtering, 299 P packet flow full description, 23 simplified, 118 password length,...rules, 445 pipes, 445 policies, 116 policy based routing, 160 Poll Interval setting, 65 POP3 ALG, 263 Port 0 setting, 525 port address translation, 350 port forwarding (see SAT) port mirroring (see pcapdump) PPP authentication with LDAP, 364 PPPoE, 101 client configuration, 101 unnumbered support, 102 with ...
Product Manual
Page 543
...static, 143 the all-nets route, 150 S SA (see security association) Alphabetical Index SafeStream, 311 SAT, 343 all-to-1 mapping, 350 IP rules, 119 multiple address translation, 348 multiplex rule, 195 port forwarding, 343 second rule destination, 343 schedules, 126 SCP, 45 ...scripting (see CLI scripts) Secondary Time Server setting, 137 secure copy (see SCP) SecuRemoteUDP Compatibility setting, 506 secure shell (see SSH) security/transport enabled option, 107 security association, 391 Send Limit...
...static, 143 the all-nets route, 150 S SA (see security association) Alphabetical Index SafeStream, 311 SAT, 343 all-to-1 mapping, 350 IP rules, 119 multiple address translation, 348 multiplex rule, 195 port forwarding, 343 second rule destination, 343 schedules, 126 SCP, 45 ...scripting (see CLI scripts) Secondary Time Server setting, 137 secure copy (see SCP) SecuRemoteUDP Compatibility setting, 506 secure shell (see SSH) security/transport enabled option, 107 security association, 391 Send Limit...