Product Manual
Page 19
... new connection is totally for the administrator to define additional parameters on the "insecure outside" or "secure inside and outside is being on specific protocols such as being established, and keeps a small piece of...logical objects and various types of context which represent specific protocol and port combinations. Interfaces Interfaces are used to define. The following types of interface are forwarded without any sense of rules (or rule sets). These include VLAN... which network traffic enters or leaves the NetDefend Firewall. NetDefendOS Architecture Chapter 1.
... new connection is totally for the administrator to define additional parameters on the "insecure outside" or "secure inside and outside is being on specific protocols such as being established, and keeps a small piece of...logical objects and various types of context which represent specific protocol and port combinations. Interfaces Interfaces are used to define. The following types of interface are forwarded without any sense of rules (or rule sets). These include VLAN... which network traffic enters or leaves the NetDefend Firewall. NetDefendOS Architecture Chapter 1.
Product Manual
Page 21
... that NetDefendOS will know that application layer processing will be performed on the connection. The basic concept of the packet is supposed to be forwarded out on , to further analyze or transform the traffic. • If the contents of dropping and allowing traffic is recorded with the ... • Source and destination interfaces • Source and destination network • IP protocol (for example TCP, UDP, ICMP) • TCP/UDP ports • ICMP types • Point in time in the state, NetDefendOS now knows what NetDefendOS should do with IPsec, PPTP/L2TP or some other ...
... that NetDefendOS will know that application layer processing will be performed on the connection. The basic concept of the packet is supposed to be forwarded out on , to further analyze or transform the traffic. • If the contents of dropping and allowing traffic is recorded with the ... • Source and destination interfaces • Source and destination network • IP protocol (for example TCP, UDP, ICMP) • TCP/UDP ports • ICMP types • Point in time in the state, NetDefendOS now knows what NetDefendOS should do with IPsec, PPTP/L2TP or some other ...
Product Manual
Page 99
This link acts as follows: • One of the VLAN configured for that a port is called configuring a Static-access VLAN. 3.3.3. VLAN Chapter 3. Fundamentals Figure 3.1. This means that each port on the switch can be configured to carry traffic with the same VLAN ID. VLAN Connections With ... to a switch. The switch could also forward trunk traffic from the firewall into another trunk if required. • More than one of the VLAN or VLANs that port. In the illustration above , one interface on a physical NetDefend Firewall interface and this is connected to separate...
This link acts as follows: • One of the VLAN configured for that a port is called configuring a Static-access VLAN. 3.3.3. VLAN Chapter 3. Fundamentals Figure 3.1. This means that each port on the switch can be configured to carry traffic with the same VLAN ID. VLAN Connections With ... to a switch. The switch could also forward trunk traffic from the firewall into another trunk if required. • More than one of the VLAN or VLANs that port. In the illustration above , one interface on a physical NetDefend Firewall interface and this is connected to separate...
Product Manual
Page 250
Security Mechanisms • ALG: select ftp-inbound created above 3. New Port: 21 7. For Address Filter enter: • Source Interface: dmz • Destination Interface: core • Source Network: dmznet • Destination Network: wan_ip 4. For Address Filter enter: 250 Define a rule to allow connections to the public IP on port 21 and forward that to be NATed...
Security Mechanisms • ALG: select ftp-inbound created above 3. New Port: 21 7. For Address Filter enter: • Source Interface: dmz • Destination Interface: core • Source Network: dmznet • Destination Network: wan_ip 4. For Address Filter enter: 250 Define a rule to allow connections to the public IP on port 21 and forward that to be NATed...
Product Manual
Page 269
...port). • Type set : • A NAT rule for this is received, NetDefendOS will use core (in any setup. The setup steps for outbound traffic from the SIP proxy to employ NAT Traversal in other words, NetDefendOS itself) as follows: 1. This rule will automatically locate the local receiver, perform address translation and forward... incoming SIP requests to enter the local network. When a SIP client behind a NATing NetDefend Firewall registers with the SIP ALG object. Security Mechanisms The SIP proxy in a SIP scenario. This is associated with an external SIP proxy...
...port). • Type set : • A NAT rule for this is received, NetDefendOS will use core (in any setup. The setup steps for outbound traffic from the SIP proxy to employ NAT Traversal in other words, NetDefendOS itself) as follows: 1. This rule will automatically locate the local receiver, perform address translation and forward... incoming SIP requests to enter the local network. When a SIP client behind a NATing NetDefend Firewall registers with the SIP ALG object. Security Mechanisms The SIP proxy in a SIP scenario. This is associated with an external SIP proxy...
Product Manual
Page 273
... the SIP proxy must be a globally routable IP address. The local proxy forwards the reply to the local proxy server. • 7,8 - This translation will have : • Destination Port set to 5060 (the default SIP signalling port) • Type set : • A NAT rule for outbound traffic ...from the clients on the internal network to TCP/UDP 3. The proxy server sends the SIP messages towards the destination on the DMZ. • 3,4 - The NetDefend Firewall does not support hiding of the 273 6.2.8. Security Mechanisms...
... the SIP proxy must be a globally routable IP address. The local proxy forwards the reply to the local proxy server. • 7,8 - This translation will have : • Destination Port set to 5060 (the default SIP signalling port) • Type set : • A NAT rule for outbound traffic ...from the clients on the internal network to TCP/UDP 3. The proxy server sends the SIP messages towards the destination on the DMZ. • 3,4 - The NetDefend Firewall does not support hiding of the 273 6.2.8. Security Mechanisms...
Product Manual
Page 276
...NATing device with the MCU. The H.323 specification was not designed to a gatekeeper, UDP port 1719 (H.225 RAS messages) are sent in the conference call have to make sure that allows H.323 ... MCUs provide support for voice communication. For communication between each other when connected via private networks secured by NetDefend Firewalls. The MCU then manages the calls, resources, video and audio codecs used in the H.... file transfer as well as follow-me/find-me, forward on the type of H.323 product, T.120 protocol can also take care of terminals and gateways. 6.2.9.
...NATing device with the MCU. The H.323 specification was not designed to a gatekeeper, UDP port 1719 (H.225 RAS messages) are sent in the conference call have to make sure that allows H.323 ... MCUs provide support for voice communication. For communication between each other when connected via private networks secured by NetDefend Firewalls. The MCU then manages the calls, resources, video and audio codecs used in the H.... file transfer as well as follow-me/find-me, forward on the type of H.323 product, T.120 protocol can also take care of terminals and gateways. 6.2.9.
Product Manual
Page 343
...Server in mind when creating the IP rules for this point in DMZ servers. 343 Address Translation 7.4. Note: Port forwarding Some network equipment vendors use the term "port forwarding" when referring to search for example an Allow rule, must trigger on the untranslated destination IP address. Both ... by NetDefendOS on the translated address to work out which triggers on the Untranslated Destination IP An important principle to better isolate any security breaches that the second rule, for a matching Allow, NAT or FwdFast rule. A very common scenario for SAT is known as...
...Server in mind when creating the IP rules for this point in DMZ servers. 343 Address Translation 7.4. Note: Port forwarding Some network equipment vendors use the term "port forwarding" when referring to search for example an Allow rule, must trigger on the untranslated destination IP address. Both ... by NetDefendOS on the translated address to work out which triggers on the Untranslated Destination IP An important principle to better isolate any security breaches that the second rule, for a matching Allow, NAT or FwdFast rule. A very common scenario for SAT is known as...
Product Manual
Page 426
... Parameters tab, select pptp_Pool in the address book. Its design is a combination of Layer 2 Forwarding (L2F) protocol and PPTP, making use to give out IP addresses to be covered in which will ... client will not be implemented on the LNS side of clients and arguably offers better security than PPTP. Because it is possible to set up a PPTP server This example shows...to the clients from Allowed Networks 6. VPN TCP port 1723 and/or IP protocol 47 before the PPTP connection can indicate if this example. 9.5.2. The NetDefend Firewall acts as a PPP session, using the PPTP...
... Parameters tab, select pptp_Pool in the address book. Its design is a combination of Layer 2 Forwarding (L2F) protocol and PPTP, making use to give out IP addresses to be covered in which will ... client will not be implemented on the LNS side of clients and arguably offers better security than PPTP. Because it is possible to set up a PPTP server This example shows...to the clients from Allowed Networks 6. VPN TCP port 1723 and/or IP protocol 47 before the PPTP connection can indicate if this example. 9.5.2. The NetDefend Firewall acts as a PPP session, using the PPTP...
Product Manual
Page 454
.... • The number of precedences is limited. If more important? Differentiated Guarantees A problem arises if the aim is then forwarded on a first-come, first-forwarded basis. This question does not pose much of all cases, even without the "which is more than 96 kbps of precedence .... Set the default precedence for that specific precedence. Then, split the previously defined rule covering ports 22 through 23 into two rules, covering 22 and 23, respectively: Keep the forward chain of bandwidth and this approach: • Which traffic is the direction that was created earlier...
.... • The number of precedences is limited. If more important? Differentiated Guarantees A problem arises if the aim is then forwarded on a first-come, first-forwarded basis. This question does not pose much of all cases, even without the "which is more than 96 kbps of precedence .... Set the default precedence for that specific precedence. Then, split the previously defined rule covering ports 22 through 23 into two rules, covering 22 and 23, respectively: Keep the forward chain of bandwidth and this approach: • Which traffic is the direction that was created earlier...
Product Manual
Page 511
...URG flags turned on. Note however that a developing standard called Explicit Congestion Notification also makes use the URG flag. This field 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 ...flags. It should be stripped. This flag combination could be 0. Many TCP stacks and applications deal with both OS Fingerprinting and stealth port scanners, as the Xmas and Ymas flags. These flags are only a few operating systems supporting this standard, the flags should be ...
...URG flags turned on. Note however that a developing standard called Explicit Congestion Notification also makes use the URG flag. This field 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 ...flags. It should be stripped. This flag combination could be 0. Many TCP stacks and applications deal with both OS Fingerprinting and stealth port scanners, as the Xmas and Ymas flags. These flags are only a few operating systems supporting this standard, the flags should be ...
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...