# [ASP_SFW_TCP_RECONSTRUCT_DROP](https://apps.juniper.net/syslog-explorer/?msg=ASP_SFW_TCP_RECONSTRUCT_DROP)

## SYSLOG Details
- **Message**: <variable>syslog-prefix</variable> <variable>error-code</variable>: proto <variable>protocol-id</variable> (<variable>protocol-name</variable>), <variable>source-interface-name</variable><variable>separator</variable><variable>source-address</variable>:<variable>source-port</variable> -> <variable>destination-address</variable><variable>destination-port</variable>, <variable>event-type</variable>
- **Help**: Packets in TCP session violated TCP standards
- **Description**: The stateful firewall discarded the Transmission Control Protocol (TCP) packet with the indicated characteristics, because the session to which the packet belongs violated TCP standards. The discarded packet contained the indicated information about its protocol (numerical identifier and name), source (logical interface name, IP address, and port number), and destination (IP address and port number).
- **Type**: Event: This message reports an event, not an error
- **Severity**: notice
- **Cause**: Possible causes include the following: (1) the amount of previously received but unacknowledged data exceeded the TCP window (2) there were sequence number errors (gaps in the sequence or packets with overlapping numbers).
- **Action**: -
- **Attributes**: syslog-prefix
error-code
protocol-id
protocol-name
source-interface-name
separator
source-address
source-port
destination-address
destination-port
event-type
- **Facility**: LOG_PFE

## Found this message in the following releases:
- [Junos OS 26.2R1](https://apps.juniper.net/syslog-explorer/?msg=ASP_SFW_TCP_RECONSTRUCT_DROP&sw=Junos%20OS&rel=26.2R1)
- [Junos OS 25.4R1](https://apps.juniper.net/syslog-explorer/?msg=ASP_SFW_TCP_RECONSTRUCT_DROP&sw=Junos%20OS&rel=25.4R1)
- [Junos OS 25.2R2](https://apps.juniper.net/syslog-explorer/?msg=ASP_SFW_TCP_RECONSTRUCT_DROP&sw=Junos%20OS&rel=25.2R2)
- [Junos OS 25.2R1](https://apps.juniper.net/syslog-explorer/?msg=ASP_SFW_TCP_RECONSTRUCT_DROP&sw=Junos%20OS&rel=25.2R1)
- [Junos OS 24.4R2](https://apps.juniper.net/syslog-explorer/?msg=ASP_SFW_TCP_RECONSTRUCT_DROP&sw=Junos%20OS&rel=24.4R2)
- [Junos OS 24.4R1](https://apps.juniper.net/syslog-explorer/?msg=ASP_SFW_TCP_RECONSTRUCT_DROP&sw=Junos%20OS&rel=24.4R1)
- [Junos OS 24.2R2](https://apps.juniper.net/syslog-explorer/?msg=ASP_SFW_TCP_RECONSTRUCT_DROP&sw=Junos%20OS&rel=24.2R2)
- [Junos OS 24.2R1](https://apps.juniper.net/syslog-explorer/?msg=ASP_SFW_TCP_RECONSTRUCT_DROP&sw=Junos%20OS&rel=24.2R1)
- [Junos OS 23.4R2](https://apps.juniper.net/syslog-explorer/?msg=ASP_SFW_TCP_RECONSTRUCT_DROP&sw=Junos%20OS&rel=23.4R2)
- [Junos OS 23.4R1](https://apps.juniper.net/syslog-explorer/?msg=ASP_SFW_TCP_RECONSTRUCT_DROP&sw=Junos%20OS&rel=23.4R1)
- [Junos OS 23.2R2](https://apps.juniper.net/syslog-explorer/?msg=ASP_SFW_TCP_RECONSTRUCT_DROP&sw=Junos%20OS&rel=23.2R2)
- [Junos OS 23.2R1](https://apps.juniper.net/syslog-explorer/?msg=ASP_SFW_TCP_RECONSTRUCT_DROP&sw=Junos%20OS&rel=23.2R1)
- [Junos OS 22.4R3](https://apps.juniper.net/syslog-explorer/?msg=ASP_SFW_TCP_RECONSTRUCT_DROP&sw=Junos%20OS&rel=22.4R3)
- [Junos OS 22.4R2](https://apps.juniper.net/syslog-explorer/?msg=ASP_SFW_TCP_RECONSTRUCT_DROP&sw=Junos%20OS&rel=22.4R2)
- [Junos OS 22.4R1](https://apps.juniper.net/syslog-explorer/?msg=ASP_SFW_TCP_RECONSTRUCT_DROP&sw=Junos%20OS&rel=22.4R1)
- [Junos OS 22.2R3](https://apps.juniper.net/syslog-explorer/?msg=ASP_SFW_TCP_RECONSTRUCT_DROP&sw=Junos%20OS&rel=22.2R3)
- [Junos OS 22.2R2](https://apps.juniper.net/syslog-explorer/?msg=ASP_SFW_TCP_RECONSTRUCT_DROP&sw=Junos%20OS&rel=22.2R2)
- [Junos OS 22.2R1](https://apps.juniper.net/syslog-explorer/?msg=ASP_SFW_TCP_RECONSTRUCT_DROP&sw=Junos%20OS&rel=22.2R1)