我为公司网络设置了一个新的 HP MSR2004 路由器。该网络使用内部专用网络并具有一个静态公共 IP 地址。网上冲浪和所有与 tcp 相关的东西似乎都可以正常工作。与通过 udp 的 dns 一样。

但是，所有基于 UDP 的服务都无法正常工作。我们正在使用外部 SIP 提供商，内部网络中的 ip 电话不断失去注册，无法拨打外线电话。

这是（经过清理的）配置文件：

#
 version 7.1.064, Release 0605P20
#
 sysname gw-1
#
 ip icmp source 192.168.100.1
#
nat address-group 0
 address xxx.91.227.170 xxx.91.227.170
#
 nat mapping-behavior endpoint-independent
#
 dhcp enable
#
 dns proxy enable
 dns server 8.8.8.8
 dns server 8.8.4.4
#
 password-recovery enable
#
vlan 1
#
vlan 10
 name Management VLAN
#
vlan 11
 name Internal VLAN
#
vlan 12
 name Guest Wifi VLAN
#
vlan 20
 name Sublet 1 VLAN
#
qos map-table dscp-lp
 import 6 export 6
#
traffic classifier highprio operator and
 if-match acl name sip
#
traffic behavior communication
#
traffic behavior highprio
 remark local-precedence 7
#
qos policy communication
 classifier highprio behavior highprio
#
 stp mode rstp
 stp global enable
#
dhcp server ip-pool guest
 gateway-list 192.168.210.1
 network 192.168.210.0 mask 255.255.255.0
 address range 192.168.210.10 192.168.210.200
 dns-list 192.168.210.1
 expired day 0 hour 4
#
dhcp server ip-pool internal
 gateway-list 192.168.200.1
 network 192.168.200.0 mask 255.255.254.0
 address range 192.168.200.10 192.168.201.200
 dns-list 192.168.200.1
 expired day 0 hour 8
#
controller Cellular0/0
#
interface Aux0
#
interface NULL0
#
interface Vlan-interface10
 ip address 192.168.100.1 255.255.255.0
#
interface Vlan-interface11
 ip address 192.168.200.1 255.255.254.0
 packet-filter 3000 inbound
 qos apply policy communication inbound
#
interface Vlan-interface12
 ip address 192.168.210.1 255.255.255.0
 packet-filter 3000 inbound
 packet-filter 3001 inbound
 qos apply policy communication inbound
#
interface Vlan-interface20
 packet-filter 3000 inbound
#
interface GigabitEthernet0/0
 port link-mode route
 ip address xxx.91.227.170 255.255.255.248
 tcp mss 1460
 packet-filter name external inbound
 nat outbound address-group 0 port-preserved
#
interface GigabitEthernet0/1
 port link-mode route
#
interface GigabitEthernet0/2
 port link-mode route
#
interface GigabitEthernet0/27
 port link-mode route
#
interface GigabitEthernet0/3
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 12 tagged
 port hybrid vlan 1 untagged
#
interface GigabitEthernet0/4
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 12 tagged
 port hybrid vlan 1 untagged
#
interface GigabitEthernet0/5
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 12 tagged
 port hybrid vlan 1 untagged
#
interface GigabitEthernet0/6
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 12 tagged
 port hybrid vlan 1 untagged
#
interface GigabitEthernet0/7
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 12 tagged
 port hybrid vlan 1 untagged
#
interface GigabitEthernet0/8
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 12 tagged
 port hybrid vlan 1 untagged
#
interface GigabitEthernet0/9
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 12 tagged
 port hybrid vlan 1 untagged
#
interface GigabitEthernet0/10
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 12 tagged
 port hybrid vlan 1 untagged
#
interface GigabitEthernet0/11
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 11 tagged
 port hybrid vlan 1 untagged
#
interface GigabitEthernet0/12
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 11 tagged
 port hybrid vlan 1 untagged
#
interface GigabitEthernet0/13
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 11 tagged
 port hybrid vlan 1 untagged
#
interface GigabitEthernet0/14
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 11 tagged
 port hybrid vlan 1 untagged
#
interface GigabitEthernet0/15
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 11 tagged
 port hybrid vlan 1 untagged
#
interface GigabitEthernet0/16
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 11 tagged
 port hybrid vlan 1 untagged
#
interface GigabitEthernet0/17
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 11 tagged
 port hybrid vlan 1 untagged
#
interface GigabitEthernet0/18
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 11 tagged
 port hybrid vlan 1 untagged
 port hybrid pvid vlan 10
#
interface GigabitEthernet0/19
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 11 tagged
 port hybrid vlan 1 untagged
#
interface GigabitEthernet0/20
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 12 tagged
 port hybrid vlan 1 untagged
 port hybrid pvid vlan 10
#
interface GigabitEthernet0/21
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 11 tagged
 port hybrid vlan 1 untagged
 port hybrid pvid vlan 10
#
interface GigabitEthernet0/22
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 11 tagged
 port hybrid vlan 1 untagged
#
interface GigabitEthernet0/23
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 11 tagged
 port hybrid vlan 1 untagged
#
interface GigabitEthernet0/24
 port link-mode bridge
 port link-type hybrid
 port hybrid vlan 10 to 11 tagged
 port hybrid vlan 1 untagged
#
interface GigabitEthernet0/25
 port link-mode bridge
 port access vlan 11
#
interface GigabitEthernet0/26
 port link-mode bridge
 port access vlan 10
#
 scheduler logfile size 16
#
line class aux
 user-role network-admin
#
line class tty
 user-role network-operator
#
line class vty
 user-role network-operator
#
line aux 0
 user-role network-admin
#
line vty 0
 user-role network-operator
#
line vty 1
 authentication-mode scheme
 user-role network-operator
#
line vty 2 63
 user-role network-operator
#
 ip route-static 0.0.0.0 0 xxx.91.227.169
#
 ssh server enable
 ssh user admin service-type all authentication-type password
#
 ssh2 algorithm cipher aes256-cbc
#
 ntp-service unicast-server ptbtime1.ptb.de
#
acl advanced 3000
 rule 0 deny tcp destination 192.168.100.0 0.0.0.255
 rule 1 deny udp destination 192.168.100.0 0.0.0.255
#
acl advanced 3001
 rule 0 deny ip destination 192.168.100.0 0.0.0.255
 rule 1 deny ip destination 192.168.200.0 0.0.0.255
#
acl advanced name external
 rule 0 permit icmp
 rule 5 permit tcp established
 rule 15 permit udp source-port eq dns
 rule 20 permit udp destination-port gt 1024
 rule 21 permit udp
 rule 25 permit 115
 rule 9999 deny ip
#
acl advanced name sip
 rule 0 permit tcp destination-port range 5060 5061
 rule 5 permit udp destination-port range 5060 5061
#
domain system
#
 domain default enable system
#
role name level-0
 description Predefined level-0 role
#
role name level-1
 description Predefined level-1 role
#
role name level-2
 description Predefined level-2 role
#
role name level-3
 description Predefined level-3 role
#
role name level-4
 description Predefined level-4 role
#
role name level-5
 description Predefined level-5 role
#
role name level-6
 description Predefined level-6 role
#
role name level-7
 description Predefined level-7 role
#
role name level-8
 description Predefined level-8 role
#
role name level-9
 description Predefined level-9 role
#
role name level-10
 description Predefined level-10 role
#
role name level-11
 description Predefined level-11 role
#
role name level-12
 description Predefined level-12 role
#
role name level-13
 description Predefined level-13 role
#
role name level-14
 description Predefined level-14 role
#
user-group system
#
local-user admin class manage
 password hash xxx
 service-type ssh telnet terminal http
 authorization-attribute user-role network-admin
 authorization-attribute user-role network-operator
#
cwmp
 cwmp enable
#
return

更新：该设备支持多种协议的 NAT ALG，SIP 就是其中之一。有或没有 ALG 没有区别。但是，查看星号服务器接收到的 sip 数据包，SBC 正确地重写了正文。来电工作正常，包括音频。这使我得出结论，传出的 udp 数据包没有被正确跟踪/PAT'ed 一定有问题。不过我可能完全不在了！

如何调试/解决此问题？